Site information of the Seismological Station in Vietnam
(June 9th 2005)

N
 Station
   Code
   Latitute
   Longitude
Elevation

    name
                N
          E
         m
                       deg min
    deg min



1
Ba Vi*      BVV     21 06.13    105 22.12     182
2
Bac Giang*
 BGV
    21 17.41
   106 13.65
     15
3
Chua Tram*
 HNV
    20 56.29
   105 41.33
     50
4
Doan Hung*
 DHV
    21 37.61
   105 11.03
     70
5
Doi Son*
   DSV
    20 35.13
   105 53.24
     70
6
Met*
       MTZ
    21 32.88
   106 20.52   
7
Phu Lien*
  PLV
    20 48.36
   106 37.81
     90/18
8
Tam Dao*
   TDV
    21 27.88
   105 38.74
    1200
9
Yen Tu*
    YTV
    21 09.42    106 43.02
10
Da Lat
    DLVO
   11 57.91
   108 28.89
    1550
11
Dien Bien+
DBV
    21 23.38
   103 01.10
     480
12
Hoa Binh+
 HBV
    20 47.77
   105 20.32
      80
13
Hue
       HUVO
   16 25.01
   107 35.13
       8
14
Lai Chau+
 LCV     22 02.32
   103 09.26
    1100
15
Lang Chanh
LCV
    20 09.19
   105 14.85
16
Moc Chau+
 MCV
    20 50.65 
  104 38.13
17
Sapa
      SPV
    22 20.30
   103 50.11
    1550
18
Son La+
   SLV
    21 20.03
   103 54.30
     700
19
Song Ma
   SMV
    21 03.42
   103 44.66
20
Thanh Hoa
 THV
    19 51.05
   105 46.92
21
Tram Tau+
 TTV
    21 28.36
   104 21.66

22
Tuan Giao+
TGV
    21 35.39
   103 25.09
23
Vinh
      VIV
    18 32.88
   105 42.00
       5


Remark
Sonla+          Station, which is close to the Sonla Dam 
Tam Dao*        Station of Hanoi telemetry seismic Network.
L-4C-3D		Short period Seismograph (T=1,0), 3 compoments (Mark Product)
L-4C-1D		Short period Seismograph (T=1,0), 1 compoment  (Mark Product)
CMG-3T 		Guralp Systems Limited
STS-2	        Portable Very-Broad-Band Tri-axial Seismometer
SSA-1, SSA-2	Solid-State Recording Accelerograph 
K2		Altus Digital Recorder



The specifications of the accelerometers K2 and SSA-2 

Specifications
K2 
SSA-2
Dynamic range
Natural frequence 
Damping 
Sampling rate
Operating mode
Full scale
Sensitivity 
Number of channels
>114 dB
200 Hz
0.7 nominal
100
Continuous
+/- 2g
+/- 2.5 volts full scale
3
72
600 Hz
0.7 nominal
100
Continuous
+/- 1/4g
+/- 2.5 volts full scale 
3


The specifications of the seismological network 

Seismometer:	Mark Product 1Hz; 3 components
Sensitivity:	176/V/M/S
Damping 	0.7
Amplifier Gain	64 (2^6) *
Digitizer               15 bit for 10 Volt
		0.305 mV/count
Cutof freq.	24 Hz
Butt. Filter	5 poles
High-pass	0.1 Hz
		-1 pole

* Amplifier Gain can be set up to 2^10