Data Report
Focal mechanisms / 199801
Contributed by NIED
Earthquake Information 1998/01/31,00:48(UT)
Earthquake Mechanism Information
Hypocenter Information Provided by JMA
Origin Time(UT) | Latitude | Longitude | Depth | Magnitude | Region |
1998/01/31,00:48 | 44.6 N | 142.1 E | 20 km | Mj 3.9 | SOYA_REGION |
Focal Mechanism Solution Determined Manually
Strike | Dip | Rake | Mo | Depth | Magnitude | VarRed |
0 ; 135 | 68 ; 30 | 111 ; 48 | 1.48e+15 Nm | 8 km | Mw 4.1 | 75.31 |
Mechanism(Solid line:observation, Dotted line:Synthetics)
past earthquakes occurring in this region
Seismograms
retreive digital waveform data
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Earthquake Information 1998/01/30,15:50(UT)
Earthquake Mechanism Information
Hypocenter Information Provided by JMA
Origin Time(UT) | Latitude | Longitude | Depth | Magnitude | Region |
1998/01/30,15:50 | 41.4 N | 142.1 E | 70 km | Mj 5.4 | E_OFF_AOMORI_PREF |
Focal Mechanism Solution Determined Manually
Strike | Dip | Rake | Mo | Depth | Magnitude | VarRed |
26 ; 214 | 71 ; 19 | 87 ; 98 | 2.45e+17 Nm | 62 km | Mw 5.6 | 74.96 |

Mechanism(Solid line:observation, Dotted line:Synthetics)
past earthquakes occurring in this region

Seismograms
retreive digital waveform data
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Earthquake Information 1998/01/29,07:44(UT)
Earthquake Mechanism Information
Hypocenter Information Provided by JMA
Origin Time(UT) | Latitude | Longitude | Depth | Magnitude | Region |
1998/01/29,07:44 | 41.0 N | 140.2 E | 160 km | Mj 3.5 | TSUGARU_PENINSULA_REGION |
Focal Mechanism Solution Determined Manually
Strike | Dip | Rake | Mo | Depth | Magnitude | VarRed |
50 ; 315 | 77 ; 72 | -162 ; -14 | 9.13e+14 Nm | 170 km | Mw 3.9 | 82.45 |

Mechanism(Solid line:observation, Dotted line:Synthetics)
past earthquakes occurring in this region

Seismograms
retreive digital waveform data
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Earthquake Information 1998/01/27,16:19(UT)
Earthquake Mechanism Information
Hypocenter Information Provided by JMA
Origin Time(UT) | Latitude | Longitude | Depth | Magnitude | Region |
1998/01/27,16:19 | 35.9 N | 141.5 E | 30 km | Mj 3.5 | FAR_E_OFF_IBARAKI_PREF |
Focal Mechanism Solution Determined Manually
Strike | Dip | Rake | Mo | Depth | Magnitude | VarRed |
9 ; 267 | 87 ; 14 | 77 ; 167 | 1.45e+15 Nm | 20 km | Mw 4.1 | 74.12 |

Mechanism(Solid line:observation, Dotted line:Synthetics)
past earthquakes occurring in this region

Seismograms
retreive digital waveform data
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Earthquake Information 1998/01/26,02:16(UT)
Earthquake Mechanism Information
Hypocenter Information Provided by JMA
Origin Time(UT) | Latitude | Longitude | Depth | Magnitude | Region |
1998/01/26,02:16 | 35.9 N | 139.6 E | 70 km | Mj 4.0 | EASTERN_SAITAMA_PREF |
Focal Mechanism Solution Determined Manually
Strike | Dip | Rake | Mo | Depth | Magnitude | VarRed |
259 ; 30 | 74 ; 24 | 108 ; 44 | 6.19e+14 Nm | 62 km | Mw 3.8 | 62.02 |

Mechanism(Solid line:observation, Dotted line:Synthetics)
past earthquakes occurring in this region

Seismograms
retreive digital waveform data
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Earthquake Information 1998/01/24,23:39(UT)
Earthquake Mechanism Information
Hypocenter Information Provided by JMA
Origin Time(UT) | Latitude | Longitude | Depth | Magnitude | Region |
1998/01/24,23:39 | 43.5 N | 147.0 E | 70 km | Mj 4.3 | E_OFF_HOKKAIDO |
Focal Mechanism Solution Determined Manually
Strike | Dip | Rake | Mo | Depth | Magnitude | VarRed |
262 ; 27 | 81 ; 16 | -77 ; -144 | 1.62e+16 Nm | 50 km | Mw 4.8 | 89.43 |

Mechanism(Solid line:observation, Dotted line:Synthetics)
past earthquakes occurring in this region

Seismograms
retreive digital waveform data
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Earthquake Information 1998/01/23,21:32(UT)
Earthquake Mechanism Information
Hypocenter Information Provided by JMA
Origin Time(UT) | Latitude | Longitude | Depth | Magnitude | Region |
1998/01/23,21:32 | 34.2 N | 135.1 E | 10 km | Mj 3.9 | NW_WAKAYAMA_PREF |
Focal Mechanism Solution Determined Manually
Strike | Dip | Rake | Mo | Depth | Magnitude | VarRed |
212 ; 352 | 51 ; 47 | 118 ; 60 | 5.89e+14 Nm | 5 km | Mw 3.8 | 85.69 |

Mechanism(Solid line:observation, Dotted line:Synthetics)
past earthquakes occurring in this region

Seismograms
retreive digital waveform data
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Earthquake Information 1998/01/22,20:53(UT)
Earthquake Mechanism Information
Hypocenter Information Provided by JMA
Origin Time(UT) | Latitude | Longitude | Depth | Magnitude | Region |
1998/01/22,20:53 | 34.1 N | 139.1 E | 10 km | Mj 3.5 | NEAR_NIIJIMA_ISLAND |
Focal Mechanism Solution Determined Manually
Strike | Dip | Rake | Mo | Depth | Magnitude | VarRed |
52 ; 195 | 58 ; 37 | -69 ; -120 | 3.60e+14 Nm | 5 km | Mw 3.7 | 85.63 |

Mechanism(Solid line:observation, Dotted line:Synthetics)
past earthquakes occurring in this region

Seismograms
retreive digital waveform data
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Earthquake Information 1998/01/21,20:11(UT)
Earthquake Mechanism Information
Hypocenter Information Provided by JMA
Origin Time(UT) | Latitude | Longitude | Depth | Magnitude | Region |
1998/01/21,20:11 | 36.5 N | 140.6 E | 60 km | Mj 4.2 | NORTHERN_IBARAKI_PREF |
Focal Mechanism Solution Determined Manually
Strike | Dip | Rake | Mo | Depth | Magnitude | VarRed |
25 ; 183 | 70 ; 21 | 98 ; 69 | 3.71e+14 Nm | 53 km | Mw 3.7 | 72.39 |

Mechanism(Solid line:observation, Dotted line:Synthetics)
past earthquakes occurring in this region

Seismograms
retreive digital waveform data
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Earthquake Information 1998/01/20,15:21(UT)
Earthquake Mechanism Information
Hypocenter Information Provided by JMA
Origin Time(UT) | Latitude | Longitude | Depth | Magnitude | Region |
1998/01/20,15:21 | 43.6 N | 146.8 E | 50 km | Mj 5.2 | E_OFF_HOKKAIDO |
Focal Mechanism Solution Determined Manually
Strike | Dip | Rake | Mo | Depth | Magnitude | VarRed |
51 ; 245 | 58 ; 32 | 83 ; 101 | 3.67e+17 Nm | 50 km | Mw 5.7 | 90.44 |

Mechanism(Solid line:observation, Dotted line:Synthetics)
past earthquakes occurring in this region

Seismograms
retreive digital waveform data
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Earthquake Information 1998/01/20,11:24(UT)
Earthquake Mechanism Information
Hypocenter Information Provided by JMA
Origin Time(UT) | Latitude | Longitude | Depth | Magnitude | Region |
1998/01/20,11:24 | 33.3 N | 140.7 E | 40 km | Mj 4.5 | E_OFF_HACHIJOJIMA_ISLAND |
Focal Mechanism Solution Determined Manually
Strike | Dip | Rake | Mo | Depth | Magnitude | VarRed |
344 ; 236 | 77 ; 36 | 56 ; 158 | 5.88e+15 Nm | 56 km | Mw 4.5 | 69.56 |

Mechanism(Solid line:observation, Dotted line:Synthetics)
past earthquakes occurring in this region

Seismograms
retreive digital waveform data
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Earthquake Information 1998/01/20,08:38(UT)
Earthquake Mechanism Information
Hypocenter Information Provided by JMA
Origin Time(UT) | Latitude | Longitude | Depth | Magnitude | Region |
1998/01/20,08:38 | 41.5 N | 141.3 E | 90 km | Mj 3.5 | TSUGARU_STRAIT_REGION |
Focal Mechanism Solution Determined Manually
Strike | Dip | Rake | Mo | Depth | Magnitude | VarRed |
351 ; 90 | 89 ; 10 | -80 ; -172 | 1.08e+15 Nm | 92 km | Mw 4.0 | 53.45 |

Mechanism(Solid line:observation, Dotted line:Synthetics)
past earthquakes occurring in this region

Seismograms
retreive digital waveform data
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Earthquake Information 1998/01/17,16:16(UT)
Earthquake Mechanism Information
Hypocenter Information Provided by JMA
Origin Time(UT) | Latitude | Longitude | Depth | Magnitude | Region |
1998/01/17,16:16 | 35.6 N | 130.0 E | 20 km | Mj 4.2 | SEA_OF_JAPAN |
Focal Mechanism Solution Determined Manually
Strike | Dip | Rake | Mo | Depth | Magnitude | VarRed |
195 ; 287 | 81 ; 75 | 164 ; 10 | 1.84e+15 Nm | 11 km | Mw 4.1 | 89.16 |

Mechanism(Solid line:observation, Dotted line:Synthetics)
past earthquakes occurring in this region

Seismograms
retreive digital waveform data
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Earthquake Information 1998/01/16,16:57(UT)
Earthquake Mechanism Information
Hypocenter Information Provided by JMA
Origin Time(UT) | Latitude | Longitude | Depth | Magnitude | Region |
1998/01/16,16:57 | 34.1 N | 135.3 E | 10 km | Mj 4.1 | NW_WAKAYAMA_PREF |
Focal Mechanism Solution Determined Manually
Strike | Dip | Rake | Mo | Depth | Magnitude | VarRed |
177 ; 346 | 61 ; 29 | 95 ; 80 | 5.02e+14 Nm | 5 km | Mw 3.8 | 87.80 |

Mechanism(Solid line:observation, Dotted line:Synthetics)
past earthquakes occurring in this region

Seismograms
retreive digital waveform data
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Earthquake Information 1998/01/16,01:58(UT)
Earthquake Mechanism Information
Hypocenter Information Provided by JMA
Origin Time(UT) | Latitude | Longitude | Depth | Magnitude | Region |
1998/01/16,01:58 | 35.2 N | 140.3 E | 60 km | Mj 4.8 | KUJUKURI_COAST_BOSO_PEN |
Focal Mechanism Solution Determined Manually
Strike | Dip | Rake | Mo | Depth | Magnitude | VarRed |
9 ; 272 | 79 ; 60 | -150 ; -12 | 5.36e+15 Nm | 59 km | Mw 4.5 | 86.36 |

Mechanism(Solid line:observation, Dotted line:Synthetics)
past earthquakes occurring in this region

Seismograms
retreive digital waveform data
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Earthquake Information 1998/01/15,14:11(UT)
Earthquake Mechanism Information
Hypocenter Information Provided by JMA
Origin Time(UT) | Latitude | Longitude | Depth | Magnitude | Region |
1998/01/15,14:11 | 43.5 N | 147.5 E | 50 km | Mj 4.8 | E_OFF_HOKKAIDO |
Focal Mechanism Solution Determined Manually
Strike | Dip | Rake | Mo | Depth | Magnitude | VarRed |
58 ; 213 | 69 ; 23 | 100 ; 67 | 1.41e+16 Nm | 80 km | Mw 4.7 | 86.47 |

Mechanism(Solid line:observation, Dotted line:Synthetics)
past earthquakes occurring in this region

Seismograms
retreive digital waveform data
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Earthquake Information 1998/01/15,03:30(UT)
Earthquake Mechanism Information
Hypocenter Information Provided by JMA
Origin Time(UT) | Latitude | Longitude | Depth | Magnitude | Region |
1998/01/15,03:30 | 42.3 N | 143.0 E | 60 km | Mj 3.7 | HIDAKA_MOUNTAINS_REGION |
Focal Mechanism Solution Determined Manually
Strike | Dip | Rake | Mo | Depth | Magnitude | VarRed |
54 ; 201 | 68 ; 26 | 104 ; 60 | 5.39e+14 Nm | 53 km | Mw 3.8 | 89.79 |

Mechanism(Solid line:observation, Dotted line:Synthetics)
past earthquakes occurring in this region

Seismograms
retreive digital waveform data
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Earthquake Information 1998/01/13,17:17(UT)
Earthquake Mechanism Information
Hypocenter Information Provided by JMA
Origin Time(UT) | Latitude | Longitude | Depth | Magnitude | Region |
1998/01/13,17:17 | 35.6 N | 140.3 E | 80 km | Mj 5.0 | CENTRAL_CHIBA_PREF |
Focal Mechanism Solution Determined Manually
Strike | Dip | Rake | Mo | Depth | Magnitude | VarRed |
319 ; 50 | 88 ; 66 | -24 ; -178 | 2.28e+16 Nm | 71 km | Mw 4.9 | 80.02 |

Mechanism(Solid line:observation, Dotted line:Synthetics)
past earthquakes occurring in this region

Seismograms
retreive digital waveform data
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Earthquake Information 1998/01/13,14:43(UT)
Earthquake Mechanism Information
Hypocenter Information Provided by JMA
Origin Time(UT) | Latitude | Longitude | Depth | Magnitude | Region |
1998/01/13,14:43 | 39.1 N | 139.6 E | 10 km | Mj 3.7 | W_OFF_YAMAGATA_PREF |
Focal Mechanism Solution Determined Manually
Strike | Dip | Rake | Mo | Depth | Magnitude | VarRed |
195 ; 63 | 66 ; 33 | 66 ; 133 | 1.05e+15 Nm | 5 km | Mw 4.0 | 69.70 |

Mechanism(Solid line:observation, Dotted line:Synthetics)
past earthquakes occurring in this region

Seismograms
retreive digital waveform data
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Earthquake Information 1998/01/12,05:51(UT)
Earthquake Mechanism Information
Hypocenter Information Provided by JMA
Origin Time(UT) | Latitude | Longitude | Depth | Magnitude | Region |
1998/01/12,05:51 | 33.0 N | 136.8 E | 40 km | Mj 4.2 | SE_OFF_KII_PENINSULA |
Focal Mechanism Solution Determined Manually
Strike | Dip | Rake | Mo | Depth | Magnitude | VarRed |
291 ; 199 | 87 ; 61 | -151 ; -3 | 1.96e+15 Nm | 41 km | Mw 4.2 | 65.71 |

Mechanism(Solid line:observation, Dotted line:Synthetics)
past earthquakes occurring in this region

Seismograms
retreive digital waveform data
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Earthquake Information 1998/01/11,15:25(UT)
Earthquake Mechanism Information
Hypocenter Information Provided by JMA
Origin Time(UT) | Latitude | Longitude | Depth | Magnitude | Region |
1998/01/11,15:25 | 43.5 N | 140.7 E | 200 km | Mj 4.6 | ISHIKARI_BAY_REGION |
Focal Mechanism Solution Determined Manually
Strike | Dip | Rake | Mo | Depth | Magnitude | VarRed |
161 ; 3 | 68 ; 23 | -99 ; -69 | 1.57e+16 Nm | 200 km | Mw 4.8 | 88.50 |

Mechanism(Solid line:observation, Dotted line:Synthetics)
past earthquakes occurring in this region

Seismograms
retreive digital waveform data
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Earthquake Information 1998/01/10,05:02(UT)
Earthquake Mechanism Information
Hypocenter Information Provided by JMA
Origin Time(UT) | Latitude | Longitude | Depth | Magnitude | Region |
1998/01/10,05:02 | 31.8 N | 130.3 E | 10 km | Mj 4.3 | NW_KAGOSHIMA_PREF |
Focal Mechanism Solution Determined Manually
Strike | Dip | Rake | Mo | Depth | Magnitude | VarRed |
194 ; 285 | 85 ; 83 | 173 ; 5 | 4.41e+15 Nm | 17 km | Mw 4.4 | 80.22 |

Mechanism(Solid line:observation, Dotted line:Synthetics)
past earthquakes occurring in this region

Seismograms
retreive digital waveform data
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Earthquake Information 1998/01/09,12:08(UT)
Earthquake Mechanism Information
Hypocenter Information Provided by JMA
Origin Time(UT) | Latitude | Longitude | Depth | Magnitude | Region |
1998/01/09,12:08 | 38.1 N | 140.4 E | 10 km | Mj 3.9 | SOUTHERN_YAMAGATA_PREF |
Focal Mechanism Solution Determined Manually
Strike | Dip | Rake | Mo | Depth | Magnitude | VarRed |
157 ; 360 | 66 ; 26 | 80 ; 111 | 1.28e+15 Nm | 5 km | Mw 4.0 | 86.30 |

Mechanism(Solid line:observation, Dotted line:Synthetics)
past earthquakes occurring in this region

Seismograms
retreive digital waveform data
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Earthquake Information 1998/01/09,04:46(UT)
Earthquake Mechanism Information
Hypocenter Information Provided by JMA
Origin Time(UT) | Latitude | Longitude | Depth | Magnitude | Region |
1998/01/09,04:46 | 34.4 N | 139.2 E | 10 km | Mj 3.9 | NEAR_NIIJIMA_ISLAND |
Focal Mechanism Solution Determined Manually
Strike | Dip | Rake | Mo | Depth | Magnitude | VarRed |
138 ; 18 | 69 ; 38 | -122 ; -37 | 7.20e+14 Nm | 5 km | Mw 3.9 | 65.26 |

Mechanism(Solid line:observation, Dotted line:Synthetics)
past earthquakes occurring in this region

Seismograms
retreive digital waveform data
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Earthquake Information 1998/01/08,14:46(UT)
Earthquake Mechanism Information
Hypocenter Information Provided by JMA
Origin Time(UT) | Latitude | Longitude | Depth | Magnitude | Region |
1998/01/08,14:46 | 37.8 N | 137.7 E | shallow | Mj 4.1 | SADOGASHIMA_IS_REG |
Focal Mechanism Solution Determined Manually
Strike | Dip | Rake | Mo | Depth | Magnitude | VarRed |
182 ; 31 | 59 ; 34 | 74 ; 114 | 1.01e+15 Nm | 5 km | Mw 4.0 | 85.33 |

Mechanism(Solid line:observation, Dotted line:Synthetics)
past earthquakes occurring in this region

Seismograms
retreive digital waveform data
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Earthquake Information 1998/01/08,02:11(UT)
Earthquake Mechanism Information
Hypocenter Information Provided by JMA
Origin Time(UT) | Latitude | Longitude | Depth | Magnitude | Region |
1998/01/08,02:11 | 28.1 N | 130.3 E | 30 km | Mj 4.1 | NEAR_AMAMI-OSHIMA_ISLAND |
Focal Mechanism Solution Determined Manually
Strike | Dip | Rake | Mo | Depth | Magnitude | VarRed |
209 ; 83 | 72 ; 29 | -113 ; -40 | 2.32e+16 Nm | 32 km | Mw 4.9 | 80.44 |

Mechanism(Solid line:observation, Dotted line:Synthetics)
past earthquakes occurring in this region

Seismograms
retreive digital waveform data
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Earthquake Information 1998/01/06,04:12(UT)
Earthquake Mechanism Information
Hypocenter Information Provided by JMA
Origin Time(UT) | Latitude | Longitude | Depth | Magnitude | Region |
1998/01/06,04:12 | 43.3 N | 147.4 E | 50 km | Mj 4.2 | E_OFF_HOKKAIDO |
Focal Mechanism Solution Determined Manually
Strike | Dip | Rake | Mo | Depth | Magnitude | VarRed |
57 ; 246 | 61 ; 30 | 86 ; 98 | 3.71e+15 Nm | 47 km | Mw 4.3 | 82.94 |

Mechanism(Solid line:observation, Dotted line:Synthetics)
past earthquakes occurring in this region

Seismograms
retreive digital waveform data
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Earthquake Information 1998/01/03,18:42(UT)
Earthquake Mechanism Information
Hypocenter Information Provided by JMA
Origin Time(UT) | Latitude | Longitude | Depth | Magnitude | Region |
1998/01/03,18:42 | 41.9 N | 142.8 E | 50 km | Mj 3.8 | S_OFF_URAKAWA |
Focal Mechanism Solution Determined Manually
Strike | Dip | Rake | Mo | Depth | Magnitude | VarRed |
33 ; 203 | 68 ; 22 | 94 ; 81 | 1.03e+15 Nm | 50 km | Mw 4.0 | 76.58 |

Mechanism(Solid line:observation, Dotted line:Synthetics)
past earthquakes occurring in this region

Seismograms
retreive digital waveform data
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Earthquake Information 1998/01/02,18:20(UT)
Earthquake Mechanism Information
Hypocenter Information Provided by JMA
Origin Time(UT) | Latitude | Longitude | Depth | Magnitude | Region |
1998/01/02,18:20 | 42.9 N | 145.5 E | 50 km | Mj 5.3 | OFF_NEMURO_PENINSULA |
Focal Mechanism Solution Determined Manually
Strike | Dip | Rake | Mo | Depth | Magnitude | VarRed |
31 ; 249 | 63 ; 33 | 71 ; 123 | 3.69e+16 Nm | 47 km | Mw 5.0 | 58.47 |

Mechanism(Solid line:observation, Dotted line:Synthetics)
past earthquakes occurring in this region

Seismograms
retreive digital waveform data
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Earthquake Information 1998/01/02,14:54(UT)
Earthquake Mechanism Information
Hypocenter Information Provided by JMA
Origin Time(UT) | Latitude | Longitude | Depth | Magnitude | Region |
1998/01/02,14:54 | 42.6 N | 139.1 E | 40 km | Mj 3.8 | SW_OFF_HOKKAIDO |
Focal Mechanism Solution Determined Manually
Strike | Dip | Rake | Mo | Depth | Magnitude | VarRed |
21 ; 174 | 58 ; 36 | 105 ; 67 | 8.39e+14 Nm | 8 km | Mw 3.9 | 84.61 |

Mechanism(Solid line:observation, Dotted line:Synthetics)
past earthquakes occurring in this region

Seismograms
retreive digital waveform data
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Earthquake Information 1998/01/02,07:09(UT)
Earthquake Mechanism Information
Hypocenter Information Provided by JMA
Origin Time(UT) | Latitude | Longitude | Depth | Magnitude | Region |
1998/01/02,07:09 | 33.0 N | 137.1 E | 50 km | Mj 4.1 | FAR_S_OFF_TOKAI_DISTRICT |
Focal Mechanism Solution Determined Manually
Strike | Dip | Rake | Mo | Depth | Magnitude | VarRed |
300 ; 42 | 76 ; 50 | 139 ; 19 | 1.58e+15 Nm | 23 km | Mw 4.1 | 83.13 |

Mechanism(Solid line:observation, Dotted line:Synthetics)
past earthquakes occurring in this region

Seismograms
retreive digital waveform data
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Earthquake Information 1998/01/01,15:29(UT)
Earthquake Mechanism Information
Hypocenter Information Provided by JMA
Origin Time(UT) | Latitude | Longitude | Depth | Magnitude | Region |
1998/01/01,15:29 | 42.4 N | 144.7 E | 50 km | Mj 4.2 | SE_OFF_TOKACHI |
Focal Mechanism Solution Determined Manually
Strike | Dip | Rake | Mo | Depth | Magnitude | VarRed |
25 ; 263 | 76 ; 25 | 69 ; 146 | 1.91e+15 Nm | 35 km | Mw 4.2 | 76.05 |

Mechanism(Solid line:observation, Dotted line:Synthetics)
past earthquakes occurring in this region

Seismograms
retreive digital waveform data
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