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Contributed Data Report

Data Report

Bulletin / 1997-04
Contributed by CUPWA


Date           1997-04-01                            
Origin Time    0811 55.02   +-   8.05 
Zone                   53 
Easting            399.05   +-  26.87               Longitude     134.038 
Northing          7838.24   +-  63.75               Latitude      -19.548 
Depth                5.00   +-  34.18  N 

Arrival times    =  8           S.D. = 1.034        Seismographs =  4 
Nearest recorder =   54.9 km    Gap  = 278.9 deg    Accuracy = C 
Effects Code     =              Imax =  0           Fault =          
 
  18 km NW (304 deg) of  TCTY
NORTHERN TERRITORY
 857 km SE (157 deg) of DARWIN
  19 km NW (307 deg) of TENNANT CREEK
  Record      Dur    Sync    Unc    Resp   Seismometer      Recorder        Pol 
ASPA                 0.00           Seismograph details unknown                    
WB2                  0.00           Seismograph details unknown                    
MAGNITUDES 
Code      R       ML      MD      MB      MS      MW      MN   

No magnitudes known                             Assign ML  3.7 
 
DATA USED
Code  Wave       AT    +-    WT      CT     DT     Dist  Azim    Ad    Ae
WB2  e P       63.80  0.10  0.93   64.01  -0.21    54.9   143    5.6   5.6 
ASPA e P      117.60  0.10  0.77  116.55   1.05   458.0   181  -42.2  42.2 
ASPA e S      161.50  0.20  0.60  162.33  -0.83   458.0   181  -40.3  40.3 
WARB e P      188.90  0.20  0.61  189.20  -0.30  1058.9   224  -42.2  42.2 
WARB e S      289.80  0.20  0.55  288.81   0.99  1058.9   224  -40.3  40.3 
WARB e SG     345.90  0.50  0.46  347.53  -1.63  1058.9   224    0.3   0.3 
FORT e P      227.50  0.10  0.70  228.73  -1.23  1386.1   204  -42.2  42.2 
FORT e S      359.00  0.20  0.55  357.65   1.35  1386.1   204  -40.3  40.3 
                         8 times used, S = 1.034 
Deferred Data
ASPA e PG     127.50  0.50  0.56  129.74  -2.24   458.0   181    0.7   0.7 
MEEK e P      271.20  0.50  0.51  276.71  -5.51  1782.6   240  -42.2  42.2 
MEEK e S      436.40  1.00  0.40  441.18  -4.78  1782.6   240  -40.3  40.3 
Velocity Ratios
      ASPA  WARB  FORT 
ASPA  1.70  1.80  1.80 
      0.01  0.01  0.01 

WARB  1.80  1.75  1.79 
      0.01  0.00  0.02 

FORT  1.80  1.79  1.76 
      0.01  0.02  0.00 

Date           1997-04-01                            
Origin Time    2240 48.89   +-   2.75 
Zone                   50 
Easting            565.60   +-  40.95               Longitude     117.690 
Northing          6520.28   +-  21.28               Latitude      -31.450 
Depth                5.00   +-  23.33  N 

Arrival times    =  6           S.D. = 0.192        Seismographs =  4 
Nearest recorder =   17.0 km    Gap  = 202.5 deg    Accuracy = C 
Effects Code     =              Imax =  0           Fault =          
 
   5 km NE ( 50 deg) of  KBS 
WESTERN AUSTRALIA
 183 km  E ( 73 deg) of PERTH
  20 km  N (352 deg) of Kellerberrin
  Record      Dur    Sync    Unc    Resp   Seismometer      Recorder        Pol 
KLB                  0.00           Seismograph details unknown                    
MAGNITUDES 
Code      R       ML      MD      MB      MS      MW      MN   

No magnitudes known                             Assign ML  1.4 
 
DATA USED
Code  Wave       AT    +-    WT      CT     DT     Dist  Azim    Ad    Ae
KLB  e S       53.70  0.20  0.79   53.81  -0.11    17.0   157   17.3  17.3 
BAL  i-P       70.30  0.10  1.23   70.23   0.07   132.5   314  -30.8  30.8 
BAL  i S       85.40  0.10  1.11   85.52  -0.12   132.5   314    2.3   2.3 
MUN  e P       73.10  0.10  0.85   72.98   0.12   152.1   246  -30.8  30.8 
NWAO e P       75.80  1.00  0.53   75.37   0.43   169.2   194  -30.8  30.8 
NWAO e S       95.00  0.50  0.55   95.35  -0.35   169.2   194  -40.3  40.3 
                         6 times used, S = 0.192 
Velocity Ratios
      BAL   NWAO 
BAL   1.71  0.00 
      0.01  0.00 

NWAO  0.00  1.71 
      0.00  0.09 

Date           1997-04-03                            
Origin Time    0739 58.97   +-   0.38 
Zone                   50 
Easting            566.12   +-   3.84               Longitude     117.696 
Northing          6518.46   +-   3.18               Latitude      -31.467 
Depth                5.00   +-   5.97  N 

Arrival times    = 10           S.D. = 0.226        Seismographs =  5 
Nearest recorder =   15.1 km    Gap  = 190.0 deg    Accuracy = B 
Effects Code     =              Imax =  0           Fault =          
 
   4 km  E ( 72 deg) of  KBS 
WESTERN AUSTRALIA
 183 km  E ( 73 deg) of PERTH
  18 km  N (353 deg) of Kellerberrin
  Record      Dur    Sync    Unc    Resp   Seismometer      Recorder        Pol 
MAGNITUDES 
Code      R       ML      MD      MB      MS      MW      MN   

No magnitudes known                             Assign ML  2.0 
 
DATA USED
Code  Wave       AT    +-    WT      CT     DT     Dist  Azim    Ad    Ae
KLB  i P       61.50  0.10  1.46   61.59  -0.09    15.1   156   19.3  19.3 
KLB  i S       63.40  0.10  1.31   63.40  -0.00    15.1   156   19.3  19.3 
BAL  i P       80.80  0.10  1.23   80.55   0.25   134.1   315  -30.8  30.8 
BAL  i S       95.80  0.10  1.11   96.06  -0.26   134.1   315    2.3   2.3 
MUN  i P       83.20  0.10  1.22   83.03   0.17   151.9   247  -30.8  30.8 
MUN  e S      100.80  0.10  0.77  100.97  -0.17   151.9   247    2.0   2.0 
NWAO e P       84.80  0.50  0.61   85.23  -0.43   167.6   194  -30.8  30.8 
NWAO e S      105.40  0.50  0.55  105.02   0.38   167.6   194  -23.9  23.9 
MRWA e PMP    104.00  0.30  0.39  103.84   0.16   298.0   326  -31.8  31.8 
MRWA e SMS    138.70  0.20  0.35  138.63   0.07   298.0   326  -25.4  25.4 
                        10 times used, S = 0.226 
Deferred Data
MRWA e P      104.00  0.10  0.80  101.12   2.88   298.0   326  -42.2  42.2 
MRWA e S      138.70  0.10  0.72  132.54   6.16   298.0   326  -40.3  40.3 
Velocity Ratios
      KLB   BAL   MUN   NWAO 
KLB   1.75  1.68  1.72  1.80 
      0.11  0.03  0.03  0.07 

BAL   1.68  1.69  0.00  0.00 
      0.03  0.01  0.00  0.00 

MUN   1.72  0.00  1.73  0.00 
      0.03  0.00  0.01  0.00 

NWAO  1.80  0.00  0.00  1.80 
      0.07  0.00  0.00  0.06 

Date           1997-04-03                            
Origin Time    0744 20.33   +-   0.40 
Zone                   50 
Easting            565.09   +-   3.64               Longitude     117.685 
Northing          6518.68   +-   3.02               Latitude      -31.465 
Depth                5.00   +-   6.34  N 

Arrival times    = 11           S.D. = 0.279        Seismographs =  5 
Nearest recorder =   15.8 km    Gap  = 186.7 deg    Accuracy = B 
Effects Code     =              Imax =  0           Fault =          
 
   3 km NE ( 64 deg) of  KBS 
WESTERN AUSTRALIA
 182 km  E ( 73 deg) of PERTH
  19 km  N (350 deg) of Kellerberrin
  Record      Dur    Sync    Unc    Resp   Seismometer      Recorder        Pol 
MAGNITUDES 
Code      R       ML      MD      MB      MS      MW      MN   

No magnitudes known                             Assign ML  2.1 
 
DATA USED
Code  Wave       AT    +-    WT      CT     DT     Dist  Azim    Ad    Ae
KLB  i P       22.90  0.10  1.45   23.05  -0.15    15.8   153   18.6  18.6 
KLB  i S       24.90  0.10  1.31   24.93  -0.03    15.8   153   18.6  18.6 
BAL  i P       41.90  0.10  1.23   41.78   0.12   133.3   315  -30.8  30.8 
BAL  i S       56.80  0.10  1.11   57.18  -0.38   133.3   315    2.3   2.3 
MUN  i P       44.40  0.10  1.22   44.27   0.13   151.1   247  -30.8  30.8 
MUN  i S       62.00  0.10  1.09   62.08  -0.08   151.1   247    2.0   2.0 
NWAO e P       47.10  0.50  0.61   46.58   0.52   167.5   194  -30.8  30.8 
NWAO e S       66.50  0.50  0.55   66.37   0.13   167.5   194  -23.9  23.9 
MRWA e PMP     65.20  0.30  0.39   65.10   0.10   297.2   326  -31.8  31.8 
MRWA e S       94.60  0.30  0.58   93.74   0.86   297.2   326  -40.3  40.3 
MRWA e SMS     99.90  0.20  0.35   99.80   0.10   297.2   326  -25.4  25.4 
                        11 times used, S = 0.279 
Deferred Data
MRWA e P       65.20  0.10  0.80   62.39   2.81   297.2   326  -42.2  42.2 
Velocity Ratios
      KLB   BAL   MUN   NWAO 
KLB   1.78  1.68  1.73  1.72 
      0.11  0.03  0.03  0.07 

BAL   1.68  1.69  0.00  0.00 
      0.03  0.01  0.00  0.00 

MUN   1.73  0.00  1.73  0.00 
      0.03  0.00  0.01  0.00 

NWAO  1.72  0.00  0.00  1.72 
      0.07  0.00  0.00  0.05 

Date           1997-04-03                            
Origin Time    0746  5.74   +-   1.14 
Zone                   50 
Easting            565.66   +-   8.92               Longitude     117.691 
Northing          6518.97   +-   8.52               Latitude      -31.462 
Depth                5.00   +-  17.22  N 

Arrival times    =  7           S.D. = 0.360        Seismographs =  4 
Nearest recorder =   15.8 km    Gap  = 200.5 deg    Accuracy = C 
Effects Code     =              Imax =  0           Fault =          
 
   4 km NE ( 64 deg) of  KBS 
WESTERN AUSTRALIA
 183 km  E ( 73 deg) of PERTH
  19 km  N (352 deg) of Kellerberrin
  Record      Dur    Sync    Unc    Resp   Seismometer      Recorder        Pol 
MAGNITUDES 
Code      R       ML      MD      MB      MS      MW      MN   

No magnitudes known                             Assign ML  1.7 
 
DATA USED
Code  Wave       AT    +-    WT      CT     DT     Dist  Azim    Ad    Ae
KLB  i P        8.30  0.10  1.45    8.46  -0.16    15.8   155   18.6  18.6 
KLB  i S       10.20  0.10  1.31   10.34  -0.14    15.8   155   18.6  18.6 
BAL  i P       27.70  0.10  1.23   27.22   0.48   133.5   315  -30.8  30.8 
BAL  i S       42.20  0.10  1.11   42.64  -0.44   133.5   315    2.3   2.3 
MUN  i P       30.00  0.10  1.22   29.77   0.23   151.7   247  -30.8  30.8 
MUN  i S       47.40  0.10  1.09   47.67  -0.27   151.7   247    2.0   2.0 
NWAO e S       52.50  0.10  0.76   51.88   0.62   168.0   194  -23.9  23.9 
                         7 times used, S = 0.360 
Deferred Data
MRWA e S       80.50  0.10  0.72   79.17   1.33   297.3   326  -40.3  40.3 
Velocity Ratios
      KLB   BAL   MUN  
KLB   1.74  1.65  1.71 
      0.11  0.03  0.03 

BAL   1.65  1.66  0.00 
      0.03  0.01  0.00 

MUN   1.71  0.00  1.72 
      0.03  0.00  0.01 

Date           1997-04-03                            
Origin Time    0832 50.69   +-   0.80 
Zone                   50 
Easting            563.45   +-   6.29               Longitude     117.668 
Northing          6516.19   +-   7.38               Latitude      -31.487 
Depth                5.00   +-  17.79  N 

Arrival times    =  6           S.D. = 0.136        Seismographs =  3 
Nearest recorder =   14.5 km    Gap  = 186.5 deg    Accuracy = C 
Effects Code     =              Imax =  0           Fault =          
 
   2 km SE (114 deg) of  KBS 
WESTERN AUSTRALIA
 180 km  E ( 74 deg) of PERTH
  17 km  N (343 deg) of Kellerberrin
  Record      Dur    Sync    Unc    Resp   Seismometer      Recorder        Pol 
MAGNITUDES 
Code      R       ML      MD      MB      MS      MW      MN   

No magnitudes known                             Assign ML  1.5 
 
DATA USED
Code  Wave       AT    +-    WT      CT     DT     Dist  Azim    Ad    Ae
KLB  i P       53.10  0.10  1.46   53.20  -0.10    14.5   143   20.1  20.1 
KLB  i S       55.10  0.10  1.32   54.95   0.15    14.5   143   20.1  20.1 
BAL  i P       72.10  0.10  1.23   72.23  -0.13   133.9   316  -30.8  30.8 
BAL  i S       87.90  0.10  1.11   87.71   0.19   133.9   316    2.3   2.3 
MUN  i P       74.20  0.10  1.22   74.28  -0.08   148.6   248  -30.8  30.8 
MUN  i S       91.80  0.10  1.10   91.76   0.04   148.6   248    2.0   2.0 
                         6 times used, S = 0.136 
Velocity Ratios
      KLB   BAL   MUN  
KLB   1.83  1.73  1.74 
      0.12  0.03  0.03 

BAL   1.73  1.74  0.00 
      0.03  0.01  0.00 

MUN   1.74  0.00  1.75 
      0.03  0.00  0.01 

Date           1997-04-03                            
Origin Time    0905 45.21   +-   1.36 
Zone                   50 
Easting            564.35   +-  11.67               Longitude     117.677 
Northing          6518.46   +-  11.53               Latitude      -31.467 
Depth                5.00   +-  26.48  N 

Arrival times    =  6           S.D. = 0.228        Seismographs =  3 
Nearest recorder =   15.9 km    Gap  = 194.9 deg    Accuracy = C 
Effects Code     =              Imax =  0           Fault =          
 
   3 km NE ( 62 deg) of  KBS 
WESTERN AUSTRALIA
 181 km  E ( 73 deg) of PERTH
  19 km  N (347 deg) of Kellerberrin
  Record      Dur    Sync    Unc    Resp   Seismometer      Recorder        Pol 
MAGNITUDES 
Code      R       ML      MD      MB      MS      MW      MN   

No magnitudes known                             Assign ML  1.8 
 
DATA USED
Code  Wave       AT    +-    WT      CT     DT     Dist  Azim    Ad    Ae
KLB  i P       47.90  0.10  1.45   47.94  -0.04    15.9   150   18.4  18.4 
KLB  i S       49.80  0.10  1.31   49.84  -0.04    15.9   150   18.4  18.4 
BAL  i P       67.00  0.10  1.23   66.61   0.39   132.9   315  -30.8  30.8 
BAL  i S       81.60  0.10  1.11   81.95  -0.35   132.9   315    2.3   2.3 
MUN  i P       69.00  0.10  1.22   69.04  -0.04   150.3   247  -30.8  30.8 
MUN  i S       86.80  0.10  1.09   86.75   0.05   150.3   247    2.0   2.0 
                         6 times used, S = 0.228 
Deferred Data
MRWA e P       90.60  0.10  0.80   87.24   3.36   297.0   326  -42.2  42.2 
MRWA e S      124.50  0.10  0.72  118.57   5.93   297.0   326  -40.3  40.3 
Velocity Ratios
      KLB   BAL   MUN  
KLB   1.71  1.66  1.75 
      0.10  0.03  0.03 

BAL   1.66  1.67  0.00 
      0.03  0.01  0.00 

MUN   1.75  0.00  1.75 
      0.03  0.00  0.01 

Date           1997-04-06                            
Origin Time    0221 23.50   +-   7.51 
Zone                   50 
Easting            277.13   +-  77.49               Longitude     114.809 
Northing          7340.64   +-  30.97               Latitude      -24.031 
Depth                5.00   +-  77.62  N 

Arrival times    =  6           S.D. = 0.299        Seismographs =  4 
Nearest recorder =  164.6 km    Gap  = 170.4 deg    Accuracy = C 
Effects Code     =              Imax =  0           Fault =          
 
 100 km  S (164 deg) of  LP03
WESTERN AUSTRALIA
 884 km  N (353 deg) of PERTH
 149 km NE ( 51 deg) of CARNARVON
  Record      Dur    Sync    Unc    Resp   Seismometer      Recorder        Pol 
GIRL                 0.00           Seismograph details unknown                    
MAGNITUDES 
Code      R       ML      MD      MB      MS      MW      MN   

No magnitudes known                             Assign ML  2.6 
 
DATA USED
Code  Wave       AT    +-    WT      CT     DT     Dist  Azim    Ad    Ae
GIRL e P       49.20  0.30  0.68   49.32  -0.12   164.6   339  -30.8  30.8 
GIRL e S       68.80  0.50  0.55   68.77   0.03   164.6   339  -23.9  23.9 
MEEK e P       88.10  0.50  0.55   87.64   0.46   479.6   127  -42.2  42.2 
MEEK e S      135.00  0.50  0.50  135.35  -0.35   479.6   127  -40.3  40.3 
MRWA e S      158.00  0.50  0.49  157.86   0.14   586.7   168  -40.3  40.3 
BAL  e SG     231.00  2.00  0.36  231.34  -0.34   752.3   166    0.4   0.4 
                         6 times used, S = 0.299 
Velocity Ratios
      GIRL  MEEK 
GIRL  1.76  1.70 
      0.04  0.06 

MEEK  1.70  1.73 
      0.06  0.02 

Date           1997-04-06                            
Origin Time    1811  3.36   +-   0.64 
Zone                   50 
Easting            563.50   +-   4.74               Longitude     117.669 
Northing          6516.26   +-   4.58               Latitude      -31.487 
Depth                5.00   +-   8.41  N 

Arrival times    = 10           S.D. = 0.393        Seismographs =  5 
Nearest recorder =   14.5 km    Gap  = 176.4 deg    Accuracy = C 
Effects Code     =              Imax =  0           Fault =          
 
   2 km  E (111 deg) of  KBS 
WESTERN AUSTRALIA
 180 km  E ( 74 deg) of PERTH
  17 km  N (343 deg) of Kellerberrin
  Record      Dur    Sync    Unc    Resp   Seismometer      Recorder        Pol 
MAGNITUDES 
Code      R       ML      MD      MB      MS      MW      MN   

No magnitudes known                             Assign ML  1.9 
 
DATA USED
Code  Wave       AT    +-    WT      CT     DT     Dist  Azim    Ad    Ae
KLB  e P        5.80  0.10  1.02    5.88  -0.08    14.5   143   20.1  20.1 
KLB  e S        7.50  0.10  0.92    7.63  -0.13    14.5   143   20.1  20.1 
BAL  e P       25.00  0.10  0.86   24.90   0.10   133.9   316  -30.8  30.8 
BAL  e S       40.00  0.10  0.77   40.38  -0.38   133.9   316    2.3   2.3 
MUN  e P       26.30  0.20  0.74   26.97  -0.67   148.7   248  -30.8  30.8 
MUN  e S       44.50  0.20  0.67   44.46   0.04   148.7   248    2.0   2.0 
NWAO e P       29.60  0.30  0.68   29.22   0.38   164.8   194  -30.8  30.8 
NWAO e S       49.20  0.30  0.61   48.70   0.50   164.8   194  -23.9  23.9 
MRWA e S       77.70  0.10  0.72   77.02   0.68   298.4   327  -40.3  40.3 
MRWA e SMS     83.00  0.10  0.40   83.12  -0.12   298.4   327  -25.4  25.4 
                        10 times used, S = 0.393 
Velocity Ratios
      KLB   BAL   MUN   NWAO 
KLB   1.70  1.69  1.80  1.75 
      0.12  0.03  0.04  0.05 

BAL   1.69  1.69  0.00  0.00 
      0.03  0.01  0.00  0.00 

MUN   1.80  0.00  1.79  0.00 
      0.04  0.00  0.02  0.00 

NWAO  1.75  0.00  0.00  1.75 
      0.05  0.00  0.00  0.03 

Date           1997-04-06                            
Origin Time    2053 25.62   +-   0.69 
Zone                   50 
Easting            565.33   +-   6.87               Longitude     117.688 
Northing          6517.96   +-   5.99               Latitude      -31.471 
Depth                5.00   +-  10.82  N 

Arrival times    =  9           S.D. = 0.382        Seismographs =  5 
Nearest recorder =   15.0 km    Gap  = 186.3 deg    Accuracy = C 
Effects Code     =              Imax =  0           Fault =          
 
   3 km  E ( 75 deg) of  KBS 
WESTERN AUSTRALIA
 182 km  E ( 74 deg) of PERTH
  18 km  N (350 deg) of Kellerberrin
  Record      Dur    Sync    Unc    Resp   Seismometer      Recorder        Pol 
MAGNITUDES 
Code      R       ML      MD      MB      MS      MW      MN   

No magnitudes known                             Assign ML  1.5 
 
DATA USED
Code  Wave       AT    +-    WT      CT     DT     Dist  Azim    Ad    Ae
KLB  i P       28.10  0.10  1.46   28.21  -0.11    15.0   152   19.4  19.4 
KLB  i S       30.00  0.10  1.31   30.02  -0.02    15.0   152   19.4  19.4 
BAL  e P       47.20  0.10  0.86   47.16   0.04   133.9   315  -30.8  30.8 
BAL  e S       62.00  0.10  0.77   62.65  -0.65   133.9   315    2.3   2.3 
MUN  e P       49.90  0.20  0.74   49.55   0.35   151.0   247  -30.8  30.8 
MUN  e S       67.10  0.20  0.67   67.36  -0.26   151.0   247    2.0   2.0 
NWAO e S       72.00  0.50  0.55   71.49   0.51   166.9   194  -23.9  23.9 
MRWA e S      100.00  0.10  0.72   99.18   0.82   298.0   326  -40.3  40.3 
MRWA e SMS    105.10  0.10  0.40  105.27  -0.17   298.0   326  -25.4  25.4 
                         9 times used, S = 0.382 
Velocity Ratios
      KLB   BAL   MUN  
KLB   1.76  1.68  1.70 
      0.12  0.03  0.04 

BAL   1.68  1.69  0.00 
      0.03  0.01  0.00 

MUN   1.70  0.00  1.71 
      0.04  0.00  0.02 

Date           1997-04-06                            
Origin Time    2145 32.69   +-   0.62 
Zone                   50 
Easting            564.56   +-   5.45               Longitude     117.680 
Northing          6517.65   +-   4.80               Latitude      -31.474 
Depth                5.00   +-   9.40  N 

Arrival times    =  9           S.D. = 0.338        Seismographs =  5 
Nearest recorder =   15.1 km    Gap  = 183.0 deg    Accuracy = C 
Effects Code     =              Imax =  0           Fault =          
 
   3 km  E ( 78 deg) of  KBS 
WESTERN AUSTRALIA
 181 km  E ( 74 deg) of PERTH
  18 km  N (347 deg) of Kellerberrin
  Record      Dur    Sync    Unc    Resp   Seismometer      Recorder        Pol 
MAGNITUDES 
Code      R       ML      MD      MB      MS      MW      MN   

No magnitudes known                             Assign ML  1.5 
 
DATA USED
Code  Wave       AT    +-    WT      CT     DT     Dist  Azim    Ad    Ae
KLB  e P       35.10  0.10  1.02   35.31  -0.21    15.1   149   19.3  19.3 
KLB  i S       37.10  0.10  1.31   37.12  -0.02    15.1   149   19.3  19.3 
BAL  e P       54.30  0.10  0.86   54.20   0.10   133.6   315  -30.8  30.8 
BAL  e S       69.20  0.10  0.77   69.64  -0.44   133.6   315    2.3   2.3 
MUN  e P       56.70  0.20  0.74   56.51   0.19   150.2   247  -30.8  30.8 
MUN  e S       74.00  0.10  0.77   74.20  -0.20   150.2   247    2.0   2.0 
NWAO e S       79.00  0.50  0.55   78.44   0.56   166.4   194  -23.9  23.9 
MRWA e S      107.00  0.20  0.63  106.23   0.77   297.8   326  -40.3  40.3 
MRWA e SMS    112.00  0.20  0.35  112.31  -0.31   297.8   326  -25.4  25.4 
                         9 times used, S = 0.338 
Velocity Ratios
      KLB   BAL   MUN  
KLB   1.83  1.67  1.71 
      0.12  0.03  0.03 

BAL   1.67  1.69  0.00 
      0.03  0.01  0.00 

MUN   1.71  0.00  1.72 
      0.03  0.00  0.02 

Date           1997-04-07                            
Origin Time    0224 42.52   +-   1.06 
Zone                   50 
Easting            564.55   +-   5.67               Longitude     117.680 
Northing          6516.76   +-   7.98               Latitude      -31.482 
Depth                5.00   +-  15.84  N 

Arrival times    =  9           S.D. = 0.293        Seismographs =  5 
Nearest recorder =   14.4 km    Gap  = 181.1 deg    Accuracy = C 
Effects Code     =              Imax =  0           Fault =          
 
   2 km  E ( 95 deg) of  KBS 
WESTERN AUSTRALIA
 181 km  E ( 74 deg) of PERTH
  17 km  N (347 deg) of Kellerberrin
  Record      Dur    Sync    Unc    Resp   Seismometer      Recorder        Pol 
MAGNITUDES 
Code      R       ML      MD      MB      MS      MW      MN   

No magnitudes known                             Assign ML  1.6 
 
DATA USED
Code  Wave       AT    +-    WT      CT     DT     Dist  Azim    Ad    Ae
KLB  i P       44.90  0.10  1.46   45.02  -0.12    14.4   147   20.3  20.3 
KLB  i S       46.80  0.10  1.32   46.75   0.05    14.4   147   20.3  20.3 
BAL  w S       79.00  2.00  0.43   79.64  -0.64   134.3   316    2.3   2.3 
MUN  e P       66.20  0.20  0.74   66.29  -0.09   149.8   247  -30.8  30.8 
MUN  i S       83.90  0.10  1.10   83.94  -0.04   149.8   247    2.0   2.0 
NWAO e S       88.50  0.50  0.55   88.05   0.45   165.6   194  -23.9  23.9 
MRWA e PMP     88.00  1.00  0.30   87.47   0.53   298.5   326  -31.8  31.8 
MRWA e S      117.00  0.50  0.52  116.21   0.79   298.5   326  -40.3  40.3 
MRWA e SMS    122.00  0.50  0.29  122.32  -0.32   298.5   326  -25.4  25.4 
                         9 times used, S = 0.293 
Velocity Ratios
      KLB   MUN  
KLB   1.80  1.74 
      0.12  0.03 

MUN   1.74  1.75 
      0.03  0.02 

Date           1997-04-07                            
Origin Time    0552 42.95   +-   0.77 
Zone                   50 
Easting            563.56   +-   5.78               Longitude     117.669 
Northing          6515.50   +-   6.33               Latitude      -31.493 
Depth                5.00   +-  12.55  N 

Arrival times    = 11           S.D. = 0.167        Seismographs =  5 
Nearest recorder =   13.9 km    Gap  = 174.6 deg    Accuracy = B 
Effects Code     =              Imax =  0           Fault =          
 
   2 km SE (127 deg) of  KBS 
WESTERN AUSTRALIA
 180 km  E ( 74 deg) of PERTH
  16 km  N (342 deg) of Kellerberrin
  Record      Dur    Sync    Unc    Resp   Seismometer      Recorder        Pol 
MAGNITUDES 
Code      R       ML      MD      MB      MS      MW      MN   

No magnitudes known                             Assign ML  2.0 
 
DATA USED
Code  Wave       AT    +-    WT      CT     DT     Dist  Azim    Ad    Ae
KLB  i-P       45.30  0.10  1.47   45.38  -0.08    13.9   141   20.9  20.9 
KLB  i S       47.10  0.10  1.32   47.06   0.04    13.9   141   20.9  20.9 
BAL  i-P       64.50  0.10  1.23   64.58  -0.08   134.5   316  -30.8  30.8 
BAL  i S       80.00  0.10  1.11   80.14  -0.14   134.5   316    2.3   2.3 
MUN  e P       66.80  0.10  0.85   66.52   0.28   148.5   248  -30.8  30.8 
MUN  i S       84.00  0.10  1.10   83.99   0.01   148.5   248    2.0   2.0 
NWAO w P       68.70  2.00  0.74   68.72  -0.02   164.1   194  -30.8  30.8 
NWAO e PMP     69.40  0.30  0.41   69.46  -0.06   164.1   194  -34.7  34.7 
NWAO e S       88.70  0.50  0.47   88.11   0.59   164.1   194  -23.9  23.9 
MRWA e S      117.00  0.50  0.52  116.75   0.25   299.1   327  -40.3  40.3 
MRWA e SMS    122.50  0.50  0.29  122.88  -0.38   299.1   327  -25.4  25.4 
                        11 times used, S = 0.167 
Velocity Ratios
      KLB   BAL   MUN   NWAO 
KLB   1.77  1.71  1.72  0.00 
      0.12  0.03  0.03  0.00 

BAL   1.71  1.72  0.00  0.00 
      0.03  0.01  0.00  0.00 

MUN   1.72  0.00  1.72  0.00 
      0.03  0.00  0.01  0.00 

NWAO  0.00  0.00  0.00  1.78 
      0.00  0.00  0.00  0.17 

Date           1997-04-09                            
Origin Time    0321 41.97   +-   0.26 
Zone                   50 
Easting            564.16   +-   2.38               Longitude     117.675 
Northing          6518.15   +-   2.19               Latitude      -31.470 
Depth                2.56   +-   5.35    

Arrival times    = 11           S.D. = 0.074        Seismographs =  5 
Nearest recorder =   15.7 km    Gap  = 182.7 deg    Accuracy = A 
Effects Code     =              Imax =  0           Fault =          
 
   2 km NE ( 66 deg) of  KBS 
WESTERN AUSTRALIA
 181 km  E ( 73 deg) of PERTH
  18 km  N (347 deg) of Kellerberrin
  Record      Dur    Sync    Unc    Resp   Seismometer      Recorder        Pol 
KLB                  0.00           Seismograph details unknown                    
MAGNITUDES 
Code      R       ML      MD      MB      MS      MW      MN   

No magnitudes known                             Assign ML  2.2 
 
DATA USED
Code  Wave       AT    +-    WT      CT     DT     Dist  Azim    Ad    Ae
KLB  i-P       44.60  0.10  1.45   44.58   0.02    15.7   149   10.3  10.3 
KLB  i S       46.40  0.10  1.31   46.39   0.01    15.7   149   10.3  10.3 
BAL  i-P       63.60  0.10  1.23   63.59   0.01   133.0   315  -30.8  30.8 
BAL  e S       78.60  0.20  0.67   78.72  -0.12   133.0   315    1.2   1.2 
MUN  i-P       65.90  0.10  1.22   65.97  -0.07   150.0   247  -30.8  30.8 
MUN  e S       83.60  0.20  0.67   83.42   0.18   150.0   247    1.1   1.1 
MUN  e SMS     85.70  0.30  0.34   85.64   0.06   150.0   247  -31.4  31.4 
NWAO i P       68.30  0.10  1.21   68.32  -0.02   166.8   194  -30.8  30.8 
NWAO e S       88.00  0.20  0.66   88.06  -0.06   166.8   194    1.0   1.0 
MRWA e PMP     87.00  0.50  0.35   86.94   0.06   297.2   326  -31.8  31.8 
MRWA e S      116.00  0.50  0.52  115.81   0.19   297.2   326  -40.3  40.3 
                        11 times used, S = 0.074 
Deferred Data
NWAO e SMS     92.90  0.50  0.31   89.64   3.26   166.8   194  -29.9  29.9 
MRWA e SMS    122.50  0.50  0.29  121.72   0.78   297.2   326  -25.4  25.4 
MRWA e SG     129.00  0.50  0.52  124.07   4.93   297.2   326    0.6   0.6 
Velocity Ratios
      KLB   BAL   MUN   NWAO 
KLB   1.69  1.69  1.75  1.76 
      0.11  0.03  0.03  0.03 

BAL   1.69  1.69  0.00  2.00 
      0.03  0.02  0.00  0.18 

MUN   1.75  0.00  1.74  0.00 
      0.03  0.00  0.02  0.00 

NWAO  1.76  2.00  0.00  1.75 
      0.03  0.18  0.00  0.01 

Date           1997-04-13                            
Origin Time    0808  6.54   +-   0.42 
Zone                   50 
Easting            564.83   +-   3.58               Longitude     117.683 
Northing          6517.55   +-   3.28               Latitude      -31.475 
Depth                5.00   +-   6.50  N 

Arrival times    = 10           S.D. = 0.260        Seismographs =  5 
Nearest recorder =   14.9 km    Gap  = 183.8 deg    Accuracy = B 
Effects Code     =              Imax =  0           Fault =          
 
   3 km  E ( 80 deg) of  KBS 
WESTERN AUSTRALIA
 182 km  E ( 74 deg) of PERTH
  18 km  N (348 deg) of Kellerberrin
  Record      Dur    Sync    Unc    Resp   Seismometer      Recorder        Pol 
MAGNITUDES 
Code      R       ML      MD      MB      MS      MW      MN   

No magnitudes known                             Assign ML  2.1 
 
DATA USED
Code  Wave       AT    +-    WT      CT     DT     Dist  Azim    Ad    Ae
KLB  i P        9.00  0.10  1.46    9.12  -0.12    14.9   150   19.6  19.6 
KLB  i S       10.90  0.10  1.31   10.91  -0.01    14.9   150   19.6  19.6 
BAL  i P       28.10  0.10  1.23   28.08   0.02   133.9   315  -30.8  30.8 
BAL  i S       43.30  0.10  1.11   43.56  -0.26   133.9   315    2.3   2.3 
MUN  i+P       30.30  0.10  1.22   30.39  -0.09   150.4   247  -30.8  30.8 
MUN  i S       48.10  0.10  1.09   48.11  -0.01   150.4   247    2.0   2.0 
NWAO e P       33.10  0.20  0.73   32.63   0.47   166.4   194  -30.8  30.8 
NWAO e S       52.50  0.30  0.61   52.29   0.21   166.4   194  -23.9  23.9 
MRWA e S       81.00  0.20  0.63   80.12   0.88   298.0   326  -40.3  40.3 
MRWA e SMS     86.50  0.20  0.35   86.21   0.29   298.0   326  -25.4  25.4 
                        10 times used, S = 0.260 
Velocity Ratios
      KLB   BAL   MUN   NWAO 
KLB   1.77  1.70  1.75  1.73 
      0.12  0.03  0.03  0.04 

BAL   1.70  1.71  0.00  0.00 
      0.03  0.01  0.00  0.00 

MUN   1.75  0.00  1.75  0.00 
      0.03  0.00  0.01  0.00 

NWAO  1.73  0.00  0.00  1.73 
      0.04  0.00  0.00  0.02 

Date           1997-04-16                            
Origin Time    1724 30.79   +-   0.88 
Zone                   50 
Easting            511.90   +-   5.91               Longitude     117.124 
Northing          6597.37   +-   5.78               Latitude      -30.756 
Depth                5.00   +-   5.86  N 

Arrival times    =  9           S.D. = 0.321        Seismographs =  5 
Nearest recorder =    4.7 km    Gap  = 179.8 deg    Accuracy = C 
Effects Code     =              Imax =  0           Fault =          
 
   1 km NW (321 deg) of  CADX
WESTERN AUSTRALIA
 179 km NE ( 43 deg) of PERTH
   2 km  N (340 deg) of Cadoux
  Record      Dur    Sync    Unc    Resp   Seismometer      Recorder        Pol 
MAGNITUDES 
Code      R       ML      MD      MB      MS      MW      MN   

No magnitudes known                             Assign ML  1.7 
 
DATA USED
Code  Wave       AT    +-    WT      CT     DT     Dist  Azim    Ad    Ae
CMC  i P       31.60  0.10  1.57   31.95  -0.35     4.7   214   48.7  48.7 
CMC  i S       32.70  0.10  1.41   32.75  -0.05     4.7   214   48.7  48.7 
BAL  i P       37.70  0.10  1.35   37.91  -0.21    43.3   292    7.0   7.0 
BAL  i S       42.80  0.10  1.21   42.84  -0.04    43.3   292    7.0   7.0 
KLB  i P       49.10  0.10  1.25   48.86   0.24   110.6   147    2.7   2.7 
KLB  i S       61.10  0.10  1.12   61.38  -0.28   110.6   147    2.7   2.7 
MUN  i P       56.60  0.10  1.21   56.12   0.48   161.0   212  -30.8  30.8 
MUN  i S       75.40  0.10  1.09   75.18   0.22   161.0   212  -23.9  23.9 
MRWA e P       62.00  0.10  0.83   61.37   0.63   202.3   327  -42.2  42.2 
                         9 times used, S = 0.321 
Deferred Data
MRWA e S       85.00  0.10  0.75   84.21   0.79   202.3   327  -40.3  40.3 
Velocity Ratios
      CMC   BAL   KLB   MUN  
CMC   2.36  1.66  1.62  1.71 
      0.47  0.09  0.03  0.02 

BAL   1.66  1.74  1.61  1.72 
      0.09  0.04  0.05  0.03 

KLB   1.62  1.61  1.66  1.91 
      0.03  0.05  0.01  0.08 

MUN   1.71  1.72  1.91  1.73 
      0.02  0.03  0.08  0.01 

Date           1997-04-19                            
Origin Time    1043 28.11   +-  26.71 
Zone                   51 
Easting            389.13   +- 330.09               Longitude     121.828 
Northing          6475.51   +- 123.31               Latitude      -31.851 
Depth                5.00   +- 338.11  N 

Arrival times    =  9           S.D. = 5.066        Seismographs =  7 
Nearest recorder =   87.4 km    Gap  = 229.2 deg    Accuracy = D 
Effects Code     =              Imax =  0           Fault =          
 
  53 km  S (186 deg) of  KMBL
WESTERN AUSTRALIA
 566 km  E ( 90 deg) of PERTH
  39 km  N (  7 deg) of NORSEMAN
  Record      Dur    Sync    Unc    Resp   Seismometer      Recorder        Pol 
MAGNITUDES 
Code      R       ML      MD      MB      MS      MW      MN   

No magnitudes known                             Assign    -10.0 
 
DATA USED
Code  Wave       AT    +-    WT      CT     DT     Dist  Azim    Ad    Ae
WOOL   S-P     14.00  0.10  1.27    9.90   4.10    87.4   350    0.0   0.0 
WOOL i P       40.10  0.10  1.27   42.39  -2.29    87.4   350    3.5   3.5 
WOOL i S       54.10  0.10  1.15   52.29   1.81    87.4   350    3.5   3.5 
KLB    S-P     43.00  0.10  1.11   39.39   3.61   387.0   273    0.0   0.0 
BAL  e S      150.00  0.10  0.68  145.84   4.16   507.7   284  -40.3  40.3 
MUN    S-P     45.00  0.10  1.08   52.43  -7.43   532.5   266    0.0   0.0 
MRWA   S-P     55.10  0.10  1.06   61.37  -6.27   632.2   296    0.0   0.0 
MEEK i P      113.10  0.10  1.06  113.72  -0.62   657.2   330  -42.2  42.2 
WARB   S-P     67.10  0.10  1.04   74.95  -7.85   783.7    37    0.0   0.0 
                         9 times used, S = 5.066 
Deferred Data
KLB  e P      101.50  0.10  0.77   81.03  20.47   387.0   273  -42.2  42.2 
KLB  e S      144.50  0.10  0.70  120.42  24.08   387.0   273  -40.3  40.3 
MUN  e P      118.00  0.10  0.75   98.62  19.38   532.5   266  -42.2  42.2 
MUN  e S      163.00  0.10  0.68  151.05  11.95   532.5   266  -40.3  40.3 
MRWA e P      106.30  0.10  0.74  110.68  -4.38   632.2   296  -42.2  42.2 
MRWA e S      171.30  0.10  0.67  172.06  -0.76   632.2   296  -40.3  40.3 
MEEK e S      166.10  0.10  0.66  177.34 -11.24   657.2   330  -40.3  40.3 
WARB e P      136.20  0.10  0.73  129.02   7.18   783.7    37  -42.2  42.2 
WARB e S      203.30  0.10  0.66  203.97  -0.67   783.7    37  -40.3  40.3 
Velocity Ratios
      WOOL 
WOOL  2.17 
      0.03 

Date           1997-04-21                            
Origin Time    1337 44.24   +-  51.94 
Zone                   50 
Easting            181.41   +- 415.19               Longitude     113.898 
Northing          7483.18   +- 856.47               Latitude      -22.729 
Depth                5.00   +- 740.54  N 

Arrival times    =  5           S.D. = 0.418        Seismographs =  3 
Nearest recorder =   35.8 km    Gap  = 270.4 deg    Accuracy = B 
Effects Code     =              Imax =  0           Fault =          
 
  35 km  W (254 deg) of  GIRL
WESTERN AUSTRALIA
  93 km  S (195 deg) of Exmouth
  56 km  S (199 deg) of Learmonth
  Record      Dur    Sync    Unc    Resp   Seismometer      Recorder        Pol 
GIRL                 0.00           Seismograph details unknown                    
MAGNITUDES 
Code      R       ML      MD      MB      MS      MW      MN   

No magnitudes known                             Assign ML  3.1 
 
DATA USED
Code  Wave       AT    +-    WT      CT     DT     Dist  Azim    Ad    Ae
GIRL i-P       50.20  0.10  1.37   50.14   0.06    35.8    74    8.1   8.1 
MEEK e P      127.60  0.10  0.74  128.29  -0.69   644.2   133  -42.2  42.2 
MEEK e S      190.90  0.50  0.48  190.75   0.15   644.2   133  -40.3  40.3 
MRWA e P      141.50  0.50  0.53  140.94   0.56   749.1   164  -42.2  42.2 
MRWA e S      213.00  0.30  0.53  212.78   0.22   749.1   164  -40.3  40.3 
                         5 times used, S = 0.418 
Velocity Ratios
      MEEK  MRWA 
MEEK  1.76  1.59 
      0.01  0.13 

MRWA  1.59  1.74 
      0.13  0.01 

Date           1997-04-24                            
Origin Time    2012 18.25   +-   0.25 
Zone                   50 
Easting            563.98   +-   1.62               Longitude     117.673 
Northing          6519.06   +-   1.24               Latitude      -31.461 
Depth                1.43   +-   4.38    

Arrival times    = 17           S.D. = 0.253        Seismographs =  9 
Nearest recorder =   16.6 km    Gap  =  68.6 deg    Accuracy = A 
Effects Code     =              Imax =  0           Fault =          
 
   3 km NE ( 49 deg) of  KBS 
WESTERN AUSTRALIA
 181 km  E ( 73 deg) of PERTH
  19 km  N (347 deg) of Kellerberrin
  Record      Dur    Sync    Unc    Resp   Seismometer      Recorder        Pol 
KLB                  0.00           Seismograph details unknown                    
MAGNITUDES 
Code      R       ML      MD      MB      MS      MW      MN   

No magnitudes known                             Assign ML  3.2 
 
DATA USED
Code  Wave       AT    +-    WT      CT     DT     Dist  Azim    Ad    Ae
KLB  i-P       20.90  0.10  1.45   20.98  -0.08    16.6   150    5.9   5.9 
KLB  i S       22.80  0.10  1.30   22.87  -0.07    16.6   150    5.9   5.9 
BAL  i+P       39.80  0.10  1.23   39.82  -0.02   132.2   315    0.7   0.7 
BAL  i S       54.70  0.10  1.11   54.78  -0.08   132.2   315    0.7   0.7 
MUN  i+P       42.20  0.10  1.22   42.37  -0.17   150.2   247  -30.8  30.8 
MUN  i S       60.20  0.10  1.09   59.74   0.46   150.2   247    0.6   0.6 
NWAO i+P       44.70  0.10  1.20   44.81  -0.11   167.6   194  -30.8  30.8 
NWAO e S       64.50  0.20  0.66   64.56  -0.06   167.6   194    0.6   0.6 
MRWA i+P       60.20  0.10  1.14   60.59  -0.39   296.3   326  -42.2  42.2 
MRWA e SMS     97.60  0.20  0.35   97.92  -0.32   296.3   326  -25.5  25.5 
RKG  e PMP     71.00  0.50  0.34   70.67   0.33   350.1   189  -31.5  31.5 
RKG  e SMS    111.50  0.30  0.32  111.37   0.13   350.1   189  -25.0  25.0 
WOOL e P       71.30  0.10  0.78   71.20   0.10   384.0    84  -42.2  42.2 
WOOL   SMS    120.10  0.10  0.56  119.86   0.24   384.0    84  -24.8  24.8 
MEEK i P       90.60  0.10  1.08   90.36   0.24   542.3     9  -42.2  42.2 
WARB i P      152.90  0.10  1.01  152.49   0.41  1056.1    58  -42.2  42.2 
WARB e S      251.90  0.10  0.63  252.10  -0.20  1056.1    58  -40.3  40.3 
                        17 times used, S = 0.253 
Deferred Data
MRWA e PMP     63.80  0.20  0.42   63.20   0.60   296.3   326  -31.9  31.9 
MRWA e S       92.70  0.20  0.63   92.11   0.59   296.3   326  -40.3  40.3 
RKG  e S      105.00  0.50  0.51  103.44   1.56   350.1   189  -40.3  40.3 
MEEK i S      142.70  0.10  0.97  143.93  -1.23   542.3     9  -40.3  40.3 
FORT e P      144.60  0.10  0.71  145.35  -0.75   997.4    88  -42.2  42.2 
FORT e S      240.40  0.10  0.64  239.67   0.73   997.4    88  -40.3  40.3 
Velocity Ratios
      KLB   BAL   MUN   NWAO  WARB 
KLB   1.72  1.69  1.76  1.75  1.74 
      0.11  0.03  0.03  0.03  0.00 

BAL   1.69  1.69  0.00  2.00  1.74 
      0.03  0.01  0.00  0.15  0.00 

MUN   1.76  0.00  1.75  0.00  1.73 
      0.03  0.00  0.01  0.00  0.00 

NWAO  1.75  2.00  0.00  1.75  1.73 
      0.03  0.15  0.00  0.01  0.01 

WARB  1.74  1.74  1.73  1.73  1.74 
      0.00  0.00  0.00  0.01  0.00 

Date           1997-04-24                            
Origin Time    2017 27.29   +-   0.69 
Zone                   50 
Easting            566.79   +-   6.76               Longitude     117.703 
Northing          6518.71   +-   5.25               Latitude      -31.464 
Depth                5.00   +-   9.33  N 

Arrival times    =  9           S.D. = 0.382        Seismographs =  5 
Nearest recorder =   15.1 km    Gap  = 192.9 deg    Accuracy = B 
Effects Code     =              Imax =  0           Fault =          
 
   5 km  E ( 72 deg) of  KBS 
WESTERN AUSTRALIA
 184 km  E ( 73 deg) of PERTH
  18 km  N (355 deg) of Kellerberrin
  Record      Dur    Sync    Unc    Resp   Seismometer      Recorder        Pol 
MAGNITUDES 
Code      R       ML      MD      MB      MS      MW      MN   

No magnitudes known                             Assign ML  1.9 
 
DATA USED
Code  Wave       AT    +-    WT      CT     DT     Dist  Azim    Ad    Ae
KLB  i P       30.00  0.10  1.46   29.90   0.10    15.1   159   19.3  19.3 
KLB  e S       31.10  0.10  0.92   31.72  -0.62    15.1   159   19.3  19.3 
BAL  i-P       49.10  0.10  1.23   48.91   0.19   134.4   314  -30.8  30.8 
BAL  e S       63.80  0.20  0.67   64.46  -0.66   134.4   314    2.3   2.3 
MUN  e P       51.40  0.20  0.74   51.45  -0.05   152.6   247  -30.8  30.8 
MUN  e S       69.30  0.20  0.67   69.48  -0.18   152.6   247    2.0   2.0 
NWAO e P       54.10  0.10  0.84   53.61   0.49   168.0   195  -30.8  30.8 
NWAO e S       73.70  0.20  0.66   73.45   0.25   168.0   195  -23.9  23.9 
MRWA e SMS    106.80  0.30  0.32  106.99  -0.19   298.1   326  -25.4  25.4 
                         9 times used, S = 0.382 
Velocity Ratios
      KLB   BAL   MUN   NWAO 
KLB   1.41  1.71  1.79  1.77 
      0.09  0.03  0.04  0.03 

BAL   1.71  1.67  0.00  1.98 
      0.03  0.02  0.00  0.17 

MUN   1.79  0.00  1.74  0.00 
      0.04  0.00  0.02  0.00 

NWAO  1.77  1.98  0.00  1.73 
      0.03  0.17  0.00  0.01 

Date           1997-04-24                            
Origin Time    2306 40.56   +-   0.31 
Zone                   50 
Easting            564.94   +-   2.93               Longitude     117.684 
Northing          6518.71   +-   2.52               Latitude      -31.464 
Depth                5.00   +-   4.47  N 

Arrival times    = 11           S.D. = 0.204        Seismographs =  5 
Nearest recorder =   15.9 km    Gap  = 186.3 deg    Accuracy = B 
Effects Code     =              Imax =  0           Fault =          
 
   3 km NE ( 63 deg) of  KBS 
WESTERN AUSTRALIA
 182 km  E ( 73 deg) of PERTH
  19 km  N (349 deg) of Kellerberrin
  Record      Dur    Sync    Unc    Resp   Seismometer      Recorder        Pol 
MAGNITUDES 
Code      R       ML      MD      MB      MS      MW      MN   

No magnitudes known                             Assign ML  2.9 
 
DATA USED
Code  Wave       AT    +-    WT      CT     DT     Dist  Azim    Ad    Ae
KLB  i-P       43.30  0.10  1.45   43.29   0.01    15.9   152   18.5  18.5 
KLB  i S       45.10  0.10  1.31   45.18  -0.08    15.9   152   18.5  18.5 
BAL  i P       62.10  0.10  1.23   61.99   0.11   133.1   315  -30.8  30.8 
BAL  i S       77.10  0.10  1.11   77.37  -0.27   133.1   315    2.3   2.3 
MUN  i+P       64.40  0.10  1.22   64.48  -0.08   150.9   247  -30.8  30.8 
MUN  e S       82.40  0.10  0.77   82.28   0.12   150.9   247    2.0   2.0 
NWAO e P       67.00  0.10  0.84   66.81   0.19   167.5   194  -30.8  30.8 
NWAO e S       86.60  0.20  0.66   86.60   0.00   167.5   194  -23.9  23.9 
MRWA e P       82.50  0.30  0.64   82.61  -0.11   297.1   326  -42.2  42.2 
MRWA e S      114.70  0.30  0.58  113.95   0.75   297.1   326  -40.3  40.3 
MRWA e SMS    120.00  0.20  0.35  120.01  -0.01   297.1   326  -25.4  25.4 
                        11 times used, S = 0.204 
Velocity Ratios
      KLB   BAL   MUN   NWAO  MRWA 
KLB   1.66  1.70  1.77  1.75  1.78 
      0.10  0.03  0.03  0.03  0.03 

BAL   1.70  1.70  0.00  1.94  1.84 
      0.03  0.01  0.00  0.15  0.06 

MUN   1.77  0.00  1.76  0.00  1.78 
      0.03  0.00  0.01  0.00  0.06 

NWAO  1.75  1.94  0.00  1.74  1.81 
      0.03  0.15  0.00  0.01  0.08 

MRWA  1.78  1.84  1.78  1.81  1.77 
      0.03  0.06  0.06  0.08  0.02 

Date           1997-04-25                            
Origin Time    0039 42.52   +-   0.29 
Zone                   50 
Easting            564.60   +-   3.14               Longitude     117.680 
Northing          6519.22   +-   2.36               Latitude      -31.460 
Depth                5.00   +-   4.08  N 

Arrival times    = 11           S.D. = 0.194        Seismographs =  5 
Nearest recorder =   16.5 km    Gap  = 186.0 deg    Accuracy = B 
Effects Code     =              Imax =  0           Fault =          
 
   3 km NE ( 54 deg) of  KBS 
WESTERN AUSTRALIA
 182 km  E ( 73 deg) of PERTH
  19 km  N (349 deg) of Kellerberrin
  Record      Dur    Sync    Unc    Resp   Seismometer      Recorder        Pol 
MAGNITUDES 
Code      R       ML      MD      MB      MS      MW      MN   

No magnitudes known                             Assign ML  2.8 
 
DATA USED
Code  Wave       AT    +-    WT      CT     DT     Dist  Azim    Ad    Ae
KLB  i-P       45.40  0.10  1.45   45.34   0.06    16.5   152   17.8  17.8 
KLB  i S       47.20  0.10  1.31   47.30  -0.10    16.5   152   17.8  17.8 
BAL  i+P       63.90  0.10  1.23   63.87   0.03   132.5   315  -30.8  30.8 
BAL  i S       78.90  0.10  1.11   79.16  -0.26   132.5   315    2.3   2.3 
MUN  i+P       66.40  0.10  1.22   66.42  -0.02   150.8   247  -30.8  30.8 
MUN  e S       84.40  0.20  0.67   84.20   0.20   150.8   247    2.0   2.0 
NWAO e P       69.00  0.10  0.84   68.83   0.17   167.9   194  -30.8  30.8 
NWAO e S       88.50  0.20  0.66   88.66  -0.16   167.9   194  -23.9  23.9 
MRWA e P       84.40  0.20  0.70   84.49  -0.09   296.5   326  -42.2  42.2 
MRWA e S      116.40  0.20  0.63  115.78   0.62   296.5   326  -40.3  40.3 
MRWA e SMS    122.00  0.20  0.35  121.81   0.19   296.5   326  -25.4  25.4 
                        11 times used, S = 0.194 
Velocity Ratios
      KLB   BAL   MUN   NWAO  MRWA 
KLB   1.63  1.71  1.77  1.75  1.77 
      0.09  0.03  0.03  0.03  0.02 

BAL   1.71  1.70  0.00  1.88  1.83 
      0.03  0.01  0.00  0.14  0.04 

MUN   1.77  0.00  1.75  0.00  1.78 
      0.03  0.00  0.02  0.00  0.05 

NWAO  1.75  1.88  0.00  1.74  1.81 
      0.03  0.14  0.00  0.01  0.06 

MRWA  1.77  1.83  1.78  1.81  1.76 
      0.02  0.04  0.05  0.06  0.01 

Date           1997-04-25                            
Origin Time    0137 49.50   +-   0.46 
Zone                   50 
Easting            563.96   +-   4.15               Longitude     117.673 
Northing          6517.48   +-   4.10               Latitude      -31.476 
Depth                5.00   +-   7.11  N 

Arrival times    = 11           S.D. = 0.320        Seismographs =  5 
Nearest recorder =   15.3 km    Gap  = 180.7 deg    Accuracy = B 
Effects Code     =              Imax =  0           Fault =          
 
   2 km  E ( 79 deg) of  KBS 
WESTERN AUSTRALIA
 181 km  E ( 74 deg) of PERTH
  18 km  N (345 deg) of Kellerberrin
  Record      Dur    Sync    Unc    Resp   Seismometer      Recorder        Pol 
MAGNITUDES 
Code      R       ML      MD      MB      MS      MW      MN   

No magnitudes known                             Assign ML  2.1 
 
DATA USED
Code  Wave       AT    +-    WT      CT     DT     Dist  Azim    Ad    Ae
KLB  i-P       52.10  0.10  1.46   52.14  -0.04    15.3   147   19.1  19.1 
KLB  i S       53.90  0.10  1.31   53.97  -0.07    15.3   147   19.1  19.1 
BAL  e P       70.80  0.10  0.86   70.96  -0.16   133.3   316  -30.8  30.8 
BAL  e S       85.80  0.20  0.67   86.37  -0.57   133.3   316    2.3   2.3 
MUN  e P       73.30  0.10  0.85   73.23   0.07   149.6   247  -30.8  30.8 
MUN  e S       90.70  0.20  0.67   90.84  -0.14   149.6   247    2.0   2.0 
NWAO e P       75.90  0.10  0.84   75.55   0.35   166.1   194  -30.8  30.8 
NWAO e S       95.20  0.30  0.61   95.17   0.03   166.1   194  -23.9  23.9 
MRWA e PMP     94.50  0.30  0.39   94.32   0.18   297.6   326  -31.8  31.8 
MRWA e S      124.00  0.30  0.58  122.99   1.01   297.6   326  -40.3  40.3 
MRWA e SMS    128.90  0.20  0.35  129.07  -0.17   297.6   326  -25.4  25.4 
                        11 times used, S = 0.320 
Velocity Ratios
      KLB   BAL   MUN   NWAO 
KLB   1.69  1.71  1.74  1.74 
      0.11  0.03  0.03  0.03 

BAL   1.71  1.70  0.00  1.84 
      0.03  0.02  0.00  0.18 

MUN   1.74  0.00  1.73  0.00 
      0.03  0.00  0.02  0.00 

NWAO  1.74  1.84  0.00  1.73 
      0.03  0.18  0.00  0.02 

Date           1997-04-25                            
Origin Time    0138 30.27   +-   0.45 
Zone                   50 
Easting            564.00   +-   4.59               Longitude     117.674 
Northing          6518.08   +-   3.84               Latitude      -31.470 
Depth                5.00   +-   6.48  N 

Arrival times    = 11           S.D. = 0.323        Seismographs =  5 
Nearest recorder =   15.8 km    Gap  = 182.0 deg    Accuracy = B 
Effects Code     =              Imax =  0           Fault =          
 
   2 km NE ( 66 deg) of  KBS 
WESTERN AUSTRALIA
 181 km  E ( 73 deg) of PERTH
  18 km  N (346 deg) of Kellerberrin
  Record      Dur    Sync    Unc    Resp   Seismometer      Recorder        Pol 
MAGNITUDES 
Code      R       ML      MD      MB      MS      MW      MN   

No magnitudes known                             Assign ML  2.5 
 
DATA USED
Code  Wave       AT    +-    WT      CT     DT     Dist  Azim    Ad    Ae
KLB  i-P       32.90  0.10  1.45   32.98  -0.08    15.8   148   18.6  18.6 
KLB  i S       34.80  0.10  1.31   34.86  -0.06    15.8   148   18.6  18.6 
BAL  i P       51.80  0.10  1.23   51.67   0.13   132.9   315  -30.8  30.8 
BAL  i S       66.50  0.20  0.96   67.02  -0.52   132.9   315    2.3   2.3 
MUN  e P       54.20  0.20  0.74   54.03   0.17   149.8   247  -30.8  30.8 
MUN  e S       71.70  0.30  0.62   71.68   0.02   149.8   247    2.0   2.0 
NWAO e P       56.70  0.20  0.73   56.40   0.30   166.7   194  -30.8  30.8 
NWAO e S       75.90  0.30  0.61   76.09  -0.19   166.7   194  -23.9  23.9 
MRWA e PMP     76.00  0.50  0.35   75.02   0.98   297.1   326  -31.8  31.8 
MRWA e S      104.40  0.30  0.58  103.66   0.74   297.1   326  -40.3  40.3 
MRWA e SMS    109.40  0.20  0.35  109.71  -0.31   297.1   326  -25.4  25.4 
                        11 times used, S = 0.323 
Deferred Data
MRWA e P       76.00  0.50  0.58   72.32   3.68   297.1   326  -42.2  42.2 
Velocity Ratios
      KLB   BAL   MUN   NWAO 
KLB   1.72  1.68  1.73  1.73 
      0.11  0.03  0.04  0.04 

BAL   1.68  1.68  0.00  0.00 
      0.03  0.02  0.00  0.00 

MUN   1.73  0.00  1.73  0.00 
      0.04  0.00  0.03  0.00 

NWAO  1.73  0.00  0.00  1.73 
      0.04  0.00  0.00  0.02 

Date           1997-04-25                            
Origin Time    0159 23.61   +-   0.36 
Zone                   50 
Easting            564.57   +-   3.34               Longitude     117.680 
Northing          6517.99   +-   3.21               Latitude      -31.471 
Depth                5.00   +-   5.63  N 

Arrival times    = 11           S.D. = 0.237        Seismographs =  5 
Nearest recorder =   15.4 km    Gap  = 183.7 deg    Accuracy = B 
Effects Code     =              Imax =  0           Fault =          
 
   3 km  E ( 72 deg) of  KBS 
WESTERN AUSTRALIA
 181 km  E ( 73 deg) of PERTH
  18 km  N (348 deg) of Kellerberrin
  Record      Dur    Sync    Unc    Resp   Seismometer      Recorder        Pol 
MAGNITUDES 
Code      R       ML      MD      MB      MS      MW      MN   

No magnitudes known                             Assign ML  2.1 
 
DATA USED
Code  Wave       AT    +-    WT      CT     DT     Dist  Azim    Ad    Ae
KLB  i-P       26.20  0.10  1.46   26.27  -0.07    15.4   150   19.0  19.0 
KLB  i S       28.10  0.10  1.31   28.11  -0.01    15.4   150   19.0  19.0 
BAL  e P       45.10  0.10  0.86   45.08   0.02   133.4   315  -30.8  30.8 
BAL  e S       60.10  0.10  0.77   60.49  -0.39   133.4   315    2.3   2.3 
MUN  e P       47.40  0.20  0.74   47.44  -0.04   150.3   247  -30.8  30.8 
MUN  e S       65.20  0.20  0.67   65.16   0.04   150.3   247    2.0   2.0 
NWAO e P       50.00  0.20  0.73   49.75   0.25   166.8   194  -30.8  30.8 
NWAO e S       69.40  0.30  0.61   69.44  -0.04   166.8   194  -23.9  23.9 
MRWA e PMP     69.00  0.30  0.39   68.41   0.59   297.5   326  -31.8  31.8 
MRWA e S       97.70  0.30  0.58   97.08   0.62   297.5   326  -40.3  40.3 
MRWA e SMS    102.80  0.20  0.35  103.15  -0.35   297.5   326  -25.4  25.4 
                        11 times used, S = 0.237 
Velocity Ratios
      KLB   BAL   MUN   NWAO 
KLB   1.73  1.69  1.75  1.74 
      0.11  0.03  0.04  0.04 

BAL   1.69  1.70  0.00  0.00 
      0.03  0.01  0.00  0.00 

MUN   1.75  0.00  1.75  0.00 
      0.04  0.00  0.02  0.00 

NWAO  1.74  0.00  0.00  1.74 
      0.04  0.00  0.00  0.02 

Date           1997-04-25                            
Origin Time    0324 14.39   +-   0.41 
Zone                   50 
Easting            564.88   +-   4.16               Longitude     117.683 
Northing          6518.34   +-   3.75               Latitude      -31.468 
Depth                5.00   +-   7.18  N 

Arrival times    = 10           S.D. = 0.253        Seismographs =  5 
Nearest recorder =   15.6 km    Gap  = 185.4 deg    Accuracy = B 
Effects Code     =              Imax =  0           Fault =          
 
   3 km  E ( 68 deg) of  KBS 
WESTERN AUSTRALIA
 182 km  E ( 73 deg) of PERTH
  18 km  N (349 deg) of Kellerberrin
  Record      Dur    Sync    Unc    Resp   Seismometer      Recorder        Pol 
MAGNITUDES 
Code      R       ML      MD      MB      MS      MW      MN   

No magnitudes known                             Assign ML  2.1 
 
DATA USED
Code  Wave       AT    +-    WT      CT     DT     Dist  Azim    Ad    Ae
KLB  i-P       17.00  0.10  1.46   17.07  -0.07    15.6   152   18.8  18.8 
KLB  i S       18.90  0.10  1.31   18.93  -0.03    15.6   152   18.8  18.8 
BAL  i+P       36.00  0.10  1.23   35.85   0.15   133.4   315  -30.8  30.8 
BAL  e S       50.70  0.20  0.67   51.26  -0.56   133.4   315    2.3   2.3 
MUN  e P       38.20  0.10  0.85   38.28  -0.08   150.7   247  -30.8  30.8 
MUN  e S       56.10  0.20  0.67   56.06   0.04   150.7   247    2.0   2.0 
NWAO e P       41.00  0.20  0.73   40.59   0.41   167.2   194  -30.8  30.8 
NWAO e S       60.20  0.30  0.61   60.33  -0.13   167.2   194  -23.9  23.9 
MRWA e PMP     60.00  0.30  0.39   59.18   0.82   297.4   326  -31.8  31.8 
MRWA e SMS     93.80  0.20  0.35   93.90  -0.10   297.4   326  -25.4  25.4 
                        10 times used, S = 0.253 
Velocity Ratios
      KLB   BAL   MUN   NWAO 
KLB   1.73  1.67  1.75  1.72 
      0.11  0.03  0.03  0.04 

BAL   1.67  1.68  0.00  0.00 
      0.03  0.02  0.00  0.00 

MUN   1.75  0.00  1.75  0.00 
      0.03  0.00  0.02  0.00 

NWAO  1.72  0.00  0.00  1.72 
      0.04  0.00  0.00  0.02 

Date           1997-04-25                            
Origin Time    0421 51.63   +-   0.52 
Zone                   50 
Easting            563.94   +-   3.78               Longitude     117.673 
Northing          6517.83   +-   3.46               Latitude      -31.472 
Depth                5.00   +-   6.72  N 

Arrival times    = 10           S.D. = 0.263        Seismographs =  5 
Nearest recorder =   15.6 km    Gap  = 181.3 deg    Accuracy = B 
Effects Code     =              Imax =  0           Fault =          
 
   2 km  E ( 71 deg) of  KBS 
WESTERN AUSTRALIA
 181 km  E ( 73 deg) of PERTH
  18 km  N (346 deg) of Kellerberrin
  Record      Dur    Sync    Unc    Resp   Seismometer      Recorder        Pol 
MAGNITUDES 
Code      R       ML      MD      MB      MS      MW      MN   

No magnitudes known                             Assign ML  2.2 
 
DATA USED
Code  Wave       AT    +-    WT      CT     DT     Dist  Azim    Ad    Ae
KLB  e P       54.20  0.20  0.89   54.32  -0.12    15.6   148   18.8  18.8 
KLB  e S       56.10  0.20  0.80   56.18  -0.08    15.6   148   18.8  18.8 
BAL  e P       73.20  0.20  0.75   73.06   0.14   133.1   316  -30.8  30.8 
BAL  e S       88.00  0.20  0.67   88.43  -0.43   133.1   316    2.3   2.3 
MUN  i-P       75.30  0.10  1.22   75.38  -0.08   149.7   247  -30.8  30.8 
MUN  e S       93.00  0.20  0.67   93.00  -0.00   149.7   247    2.0   2.0 
NWAO e P       77.90  0.20  0.73   77.73   0.17   166.4   194  -30.8  30.8 
NWAO e S       97.60  0.30  0.61   97.39   0.21   166.4   194  -23.9  23.9 
MRWA e S      125.70  0.20  0.63  125.06   0.64   297.3   326  -40.3  40.3 
MRWA e SMS    130.70  0.20  0.35  131.13  -0.43   297.3   326  -25.4  25.4 
                        10 times used, S = 0.263 
Velocity Ratios
      KLB   BAL   MUN   NWAO 
KLB   1.74  1.68  1.75  1.75 
      0.23  0.06  0.04  0.05 

BAL   1.68  1.69  0.00  0.00 
      0.06  0.03  0.00  0.00 

MUN   1.75  0.00  1.75  0.00 
      0.04  0.00  0.02  0.00 

NWAO  1.75  0.00  0.00  1.75 
      0.05  0.00  0.00  0.02 

Date           1997-04-25                            
Origin Time    1328 10.88   +-   9.16 
Zone                   50 
Easting            343.92   +-  32.52               Longitude     115.449 
Northing          7196.93   +-  18.90               Latitude      -25.336 
Depth                5.00   +-  39.80  N 

Arrival times    =  8           S.D. = 0.672        Seismographs =  6 
Nearest recorder =  348.1 km    Gap  = 231.9 deg    Accuracy = C 
Effects Code     =              Imax =  0           Fault =          
 
  77 km SE (122 deg) of  LP02
WESTERN AUSTRALIA
 734 km  N (357 deg) of PERTH
 186 km  E (106 deg) of CARNARVON
  40 km SE (142 deg) of Gascoyne Junction
  Record      Dur    Sync    Unc    Resp   Seismometer      Recorder        Pol 
MEEK                 0.00           Seismograph details unknown                    
MAGNITUDES 
Code      R       ML      MD      MB      MS      MW      MN   

No magnitudes known                             Assign ML  2.7 
 
DATA USED
Code  Wave       AT    +-    WT      CT     DT     Dist  Azim    Ad    Ae
MEEK e P       58.60  0.20  0.69   59.12  -0.52   348.1   115  -42.2  42.2 
MEEK e PMP     63.50  0.20  0.41   62.73   0.77   348.1   115  -31.5  31.5 
MEEK e SG     107.50  0.30  0.57  107.05   0.45   348.1   115    0.9   0.9 
MRWA e P       70.40  0.30  0.62   69.42   0.98   433.5   172  -42.2  42.2 
BAL  e SG     175.00  0.50  0.49  175.77  -0.77   596.9   168    0.5   0.5 
MBL  e S      157.00  0.10  0.67  157.31  -0.31   644.1    44  -40.3  40.3 
KLB  e S      175.00  1.00  0.42  175.20  -0.20   729.0   162  -40.3  40.3 
NWAO e S      202.00  1.00  0.41  202.50  -0.50   858.7   168  -40.3  40.3 
                         8 times used, S = 0.672 
Deferred Data
MEEK e S       96.60  0.30  0.57   95.04   1.56   348.1   115  -40.3  40.3 
MRWA e S      111.70  0.30  0.56  112.98  -1.28   433.5   172  -40.3  40.3 
BAL  e S      149.00  1.00  0.42  147.38   1.62   596.9   168  -40.3  40.3 
KLB  e SG     210.00  0.50  0.48  212.27  -2.27   729.0   162    0.4   0.4 
MUN  e S      178.00  2.00  0.36  177.44   0.56   739.7   174  -40.3  40.3 
MUN  e SG     213.30  0.30  0.53  215.23  -1.93   739.7   174    0.4   0.4 
NWAO e SG     240.00  0.50  0.47  248.11  -8.11   858.7   168    0.4   0.4 
 
NO VELOCITY RATIOS
Date           1997-04-25                            
Origin Time    1900 42.41   +-  40.19 
Zone                   50 
Easting            512.53   +- 207.74               Longitude     117.131 
Northing          6623.84   +- 150.90               Latitude      -30.518 
Depth                5.00   +- 183.36  N 

Arrival times    =  5           S.D. = 0.339        Seismographs =  3 
Nearest recorder =   41.8 km    Gap  = 245.5 deg    Accuracy = C 
Effects Code     = F            Imax =  4           Fault =          
 
   0 km  E ( 76 deg) of  BK5 
WESTERN AUSTRALIA
 200 km NE ( 38 deg) of PERTH
   4 km  W (274 deg) of Burakin
  Record      Dur    Sync    Unc    Resp   Seismometer      Recorder        Pol 
BAL                  0.00           Seismograph details unknown                    
MAGNITUDES 
Code      R       ML      MD      MB      MS      MW      MN   

No magnitudes known                             Assign ML  1.7 
 
DATA USED
Code  Wave       AT    +-    WT      CT     DT     Dist  Azim    Ad    Ae
BAL  i-P       49.10  0.10  1.35   49.29  -0.19    41.8   256    7.2   7.2 
BAL  i S       54.20  0.10  1.22   54.06   0.14    41.8   256    7.2   7.2 
MRWA e P       70.90  0.10  0.84   70.41   0.49   181.0   322  -42.2  42.2 
MRWA e S       90.80  0.30  0.61   91.34  -0.54   181.0   322  -40.3  40.3 
MUN  e S       92.00  1.00  0.47   92.01  -0.01   184.2   208  -40.3  40.3 
                         5 times used, S = 0.339 
Deferred Data
KLB  e S       80.00  2.00  0.43   79.27   0.73   133.3   153    2.3   2.3 
Velocity Ratios
      BAL   MRWA 
BAL   1.76  1.68 
      0.04  0.03 

MRWA  1.68  1.70 
      0.03  0.02 

Date           1997-04-26                            
Origin Time    1409 18.22   +-   0.93 
Zone                   50 
Easting            565.27   +-   8.63               Longitude     117.687 
Northing          6518.53   +-   7.04               Latitude      -31.466 
Depth                5.00   +-  16.70  N 

Arrival times    =  7           S.D. = 0.290        Seismographs =  4 
Nearest recorder =   15.6 km    Gap  = 187.1 deg    Accuracy = B 
Effects Code     =              Imax =  0           Fault =          
 
   3 km  E ( 67 deg) of  KBS 
WESTERN AUSTRALIA
 182 km  E ( 73 deg) of PERTH
  18 km  N (350 deg) of Kellerberrin
  Record      Dur    Sync    Unc    Resp   Seismometer      Recorder        Pol 
MAGNITUDES 
Code      R       ML      MD      MB      MS      MW      MN   

No magnitudes known                             Assign ML  1.7 
 
DATA USED
Code  Wave       AT    +-    WT      CT     DT     Dist  Azim    Ad    Ae
KLB  i P       20.80  0.10  1.46   20.90  -0.10    15.6   153   18.8  18.8 
KLB  i S       22.70  0.10  1.31   22.76  -0.06    15.6   153   18.8  18.8 
BAL  i P       39.80  0.10  1.23   39.71   0.09   133.5   315  -30.8  30.8 
BAL  i S       54.70  0.10  1.11   55.13  -0.43   133.5   315    2.3   2.3 
MUN  i P       42.30  0.10  1.22   42.17   0.13   151.2   247  -30.8  30.8 
MUN  i S       60.00  0.10  1.09   60.01  -0.01   151.2   247    2.0   2.0 
MRWA e P       61.10  0.10  0.80   60.31   0.79   297.4   326  -42.2  42.2 
                         7 times used, S = 0.290 
Deferred Data
MRWA e S       97.60  0.10  0.72   91.68   5.92   297.4   326  -40.3  40.3 
Velocity Ratios
      KLB   BAL   MUN  
KLB   1.74  1.68  1.73 
      0.11  0.03  0.03 

BAL   1.68  1.69  0.00 
      0.03  0.01  0.00 

MUN   1.73  0.00  1.74 
      0.03  0.00  0.01 

Date           1997-04-30                            
Origin Time    0225 35.07   +-   0.38 
Zone                   50 
Easting            564.10   +-   3.45               Longitude     117.675 
Northing          6519.21   +-   2.73               Latitude      -31.460 
Depth                5.00   +-   5.94  N 

Arrival times    = 11           S.D. = 0.268        Seismographs =  5 
Nearest recorder =   16.7 km    Gap  = 184.4 deg    Accuracy = B 
Effects Code     =              Imax =  0           Fault =          
 
   3 km NE ( 49 deg) of  KBS 
WESTERN AUSTRALIA
 181 km  E ( 73 deg) of PERTH
  19 km  N (347 deg) of Kellerberrin
  Record      Dur    Sync    Unc    Resp   Seismometer      Recorder        Pol 
MAGNITUDES 
Code      R       ML      MD      MB      MS      MW      MN   

No magnitudes known                             Assign ML  2.3 
 
DATA USED
Code  Wave       AT    +-    WT      CT     DT     Dist  Azim    Ad    Ae
KLB  i-P       37.80  0.10  1.45   37.93  -0.13    16.7   151   17.6  17.6 
KLB  i S       39.90  0.10  1.30   39.91  -0.01    16.7   151   17.6  17.6 
BAL  i-P       56.30  0.10  1.23   56.37  -0.07   132.2   315  -30.8  30.8 
BAL  i S       71.40  0.10  1.11   71.62  -0.22   132.2   315    2.3   2.3 
MUN  e P       58.90  0.10  0.85   58.91  -0.01   150.3   247  -30.8  30.8 
MUN  i S       76.60  0.10  1.09   76.63  -0.03   150.3   247    2.0   2.0 
NWAO e P       61.70  0.20  0.73   61.36   0.34   167.8   194  -30.8  30.8 
NWAO e S       81.30  0.20  0.66   81.17   0.13   167.8   194  -23.9  23.9 
MRWA e P       78.00  1.00  0.50   77.01   0.99   296.2   326  -42.2  42.2 
MRWA e S      108.90  0.20  0.63  108.27   0.63   296.2   326  -40.3  40.3 
MRWA e SMS    114.00  0.10  0.40  114.29  -0.29   296.2   326  -25.4  25.4 
                        11 times used, S = 0.268 
Velocity Ratios
      KLB   BAL   MUN   NWAO  MRWA 
KLB   1.77  1.70  1.74  1.73  1.72 
      0.11  0.03  0.03  0.03  0.06 

BAL   1.70  1.71  0.00  1.83  1.73 
      0.03  0.01  0.00  0.17  0.11 

MUN   1.74  0.00  1.74  0.00  1.69 
      0.03  0.00  0.01  0.00  0.12 

NWAO  1.73  1.83  0.00  1.74  1.69 
      0.03  0.17  0.00  0.02  0.16 

MRWA  1.72  1.73  1.69  1.69  1.72 
      0.06  0.11  0.12  0.16  0.05 

Date           1997-04-30                            
Origin Time    1713  6.36   +-   0.36 
Zone                   50 
Easting            563.74   +-   3.79               Longitude     117.671 
Northing          6517.75   +-   3.54               Latitude      -31.473 
Depth                5.00   +-   6.39  N 

Arrival times    =  9           S.D. = 0.147        Seismographs =  5 
Nearest recorder =   15.6 km    Gap  = 180.5 deg    Accuracy = B 
Effects Code     =              Imax =  0           Fault =          
 
   2 km  E ( 71 deg) of  KBS 
WESTERN AUSTRALIA
 181 km  E ( 73 deg) of PERTH
  18 km  N (345 deg) of Kellerberrin
  Record      Dur    Sync    Unc    Resp   Seismometer      Recorder        Pol 
MAGNITUDES 
Code      R       ML      MD      MB      MS      MW      MN   

No magnitudes known                             Assign ML  1.6 
 
DATA USED
Code  Wave       AT    +-    WT      CT     DT     Dist  Azim    Ad    Ae
KLB  i-P        9.00  0.10  1.46    9.06  -0.06    15.6   147   18.7  18.7 
KLB  i S       10.90  0.10  1.31   10.92  -0.02    15.6   147   18.7  18.7 
BAL  e P       28.00  0.30  0.69   27.78   0.22   133.0   316  -30.8  30.8 
BAL  e S       43.00  0.30  0.62   43.13  -0.13   133.0   316    2.3   2.3 
MUN  e P       30.00  0.10  0.85   30.08  -0.08   149.5   247  -30.8  30.8 
MUN  e S       47.50  0.20  0.67   47.68  -0.18   149.5   247    2.0   2.0 
NWAO e P       32.70  0.20  0.73   32.44   0.26   166.3   194  -30.8  30.8 
NWAO e S       52.30  0.30  0.61   52.09   0.21   166.3   194  -23.9  23.9 
MRWA e SMS     86.00  0.30  0.32   85.85   0.15   297.3   326  -25.4  25.4 
                         9 times used, S = 0.147 
Velocity Ratios
      KLB   BAL   MUN   NWAO 
KLB   1.72  1.69  1.74  1.75 
      0.11  0.06  0.03  0.04 

BAL   1.69  1.69  0.00  0.00 
      0.06  0.04  0.00  0.00 

MUN   1.74  0.00  1.74  0.00 
      0.03  0.00  0.02  0.00 

NWAO  1.75  0.00  0.00  1.74 
      0.04  0.00  0.00  0.02 

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