Data Report
Focal mechanisms / 200104
Contributed by NIED
Earthquake Information 2001/04/30,11:35(UT)
Earthquake Mechanism Information
Hypocenter Information Provided by JMA
| Origin Time(UT) | Latitude | Longitude | Depth | Magnitude | Region |
| 2001/04/30,11:35 | 34.2 N | 140.2 E | 50 km | Mj 3.5 | FAR_S_OFF_BOSO_PENINSULA |
Focal Mechanism Solution Determined Manually
| Strike | Dip | Rake | Mo | Depth | Magnitude | VarRed |
| 271 ; 138 | 71 ; 26 | 71 ; 133 | 1.61e+14 Nm | 41 km | Mw 3.4 | 79.52 |
Mechanism(Solid line:observation, Dotted line:Synthetics)
past earthquakes occurring in this region
Seismograms
retreive digital waveform data
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Earthquake Information 2001/04/30,02:02(UT)
Earthquake Mechanism Information
Hypocenter Information Provided by JMA
| Origin Time(UT) | Latitude | Longitude | Depth | Magnitude | Region |
| 2001/04/30,02:02 | 43.8 N | 147.4 E | 20 km | Mj 5.2 | E_OFF_HOKKAIDO |
Focal Mechanism Solution Determined Manually
| Strike | Dip | Rake | Mo | Depth | Magnitude | VarRed |
| 56 ; 181 | 55 ; 51 | 130 ; 48 | 1.59e+17 Nm | 50 km | Mw 5.4 | 84.44 |

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

Seismograms
retreive digital waveform data
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Earthquake Information 2001/04/29,08:35(UT)
Earthquake Mechanism Information
Hypocenter Information Provided by JMA
| Origin Time(UT) | Latitude | Longitude | Depth | Magnitude | Region |
| 2001/04/29,08:35 | 25.0 N | 123.4 E | 30 km | Mj 3.5 | NW_OFF_ISHIGAKIJIMA_IS |
Focal Mechanism Solution Determined Manually
| Strike | Dip | Rake | Mo | Depth | Magnitude | VarRed |
| 302 ; 176 | 65 ; 38 | 60 ; 138 | 2.77e+15 Nm | 53 km | Mw 4.3 | 71.98 |

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

Seismograms
retreive digital waveform data
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Earthquake Information 2001/04/29,01:40(UT)
Earthquake Mechanism Information
Hypocenter Information Provided by JMA
| Origin Time(UT) | Latitude | Longitude | Depth | Magnitude | Region |
| 2001/04/29,01:40 | 42.0 N | 142.5 E | 60 km | Mj 4.3 | S_OFF_URAKAWA |
Focal Mechanism Solution Determined Manually
| Strike | Dip | Rake | Mo | Depth | Magnitude | VarRed |
| 27 ; 221 | 72 ; 19 | 85 ; 104 | 8.54e+15 Nm | 50 km | Mw 4.6 | 81.56 |

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

Seismograms
retreive digital waveform data
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Earthquake Information 2001/04/28,15:56(UT)
Earthquake Mechanism Information
Hypocenter Information Provided by JMA
| Origin Time(UT) | Latitude | Longitude | Depth | Magnitude | Region |
| 2001/04/28,15:56 | 30.4 N | 131.6 E | 60 km | Mj 3.9 | E_OFF_TANEGASHIMA_ISLAND |
Focal Mechanism Solution Determined Manually
| Strike | Dip | Rake | Mo | Depth | Magnitude | VarRed |
| 174 ; 44 | 57 ; 45 | -123 ; -50 | 3.64e+15 Nm | 11 km | Mw 4.3 | 55.34 |

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

Seismograms
retreive digital waveform data
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Earthquake Information 2001/04/27,21:59(UT)
Earthquake Mechanism Information
Hypocenter Information Provided by JMA
| Origin Time(UT) | Latitude | Longitude | Depth | Magnitude | Region |
| 2001/04/27,21:59 | 41.6 N | 142.8 E | 20 km | Mj 3.5 | E_OFF_AOMORI_PREF |
Focal Mechanism Solution Determined Manually
| Strike | Dip | Rake | Mo | Depth | Magnitude | VarRed |
| 42 ; 288 | 78 ; 29 | -116 ; -27 | 2.59e+14 Nm | 29 km | Mw 3.6 | 86.66 |

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

Seismograms
retreive digital waveform data
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Earthquake Information 2001/04/27,20:55(UT)
Earthquake Mechanism Information
Hypocenter Information Provided by JMA
| Origin Time(UT) | Latitude | Longitude | Depth | Magnitude | Region |
| 2001/04/27,20:55 | 36.3 N | 140.5 E | 50 km | Mj 3.5 | NORTHERN_IBARAKI_PREF |
Focal Mechanism Solution Determined Manually
| Strike | Dip | Rake | Mo | Depth | Magnitude | VarRed |
| 11 ; 218 | 68 ; 25 | 79 ; 115 | 2.20e+14 Nm | 53 km | Mw 3.5 | 80.27 |

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

Seismograms
retreive digital waveform data
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Earthquake Information 2001/04/27,09:27(UT)
Earthquake Mechanism Information
Hypocenter Information Provided by JMA
| Origin Time(UT) | Latitude | Longitude | Depth | Magnitude | Region |
| 2001/04/27,09:27 | 30.2 N | 130.5 E | 20 km | Mj 3.9 | NEAR_TANEGASHIMA_ISLAND |
Focal Mechanism Solution Determined Manually
| Strike | Dip | Rake | Mo | Depth | Magnitude | VarRed |
| 240 ; 36 | 54 ; 38 | -75 ; -109 | 2.04e+15 Nm | 5 km | Mw 4.2 | 89.68 |

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

Seismograms
retreive digital waveform data
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Earthquake Information 2001/04/27,05:31(UT)
Earthquake Mechanism Information
Hypocenter Information Provided by JMA
| Origin Time(UT) | Latitude | Longitude | Depth | Magnitude | Region |
| 2001/04/27,05:31 | 23.8 N | 123.4 E | 20 km | Mj 4.0 | NEAR_ISHIGAKIJIMA_ISLAND |
Focal Mechanism Solution Determined Manually
| Strike | Dip | Rake | Mo | Depth | Magnitude | VarRed |
| 71 ; 266 | 84 ; 6 | 88 ; 106 | 8.66e+14 Nm | 14 km | Mw 3.9 | 80.84 |

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

Seismograms
retreive digital waveform data
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Earthquake Information 2001/04/27,02:02(UT)
Earthquake Mechanism Information
Hypocenter Information Provided by JMA
| Origin Time(UT) | Latitude | Longitude | Depth | Magnitude | Region |
| 2001/04/27,02:02 | 24.1 N | 120.9 E | 80 km | Mj 4.0 | TAIWAN_REGION |
Focal Mechanism Solution Determined Manually
| Strike | Dip | Rake | Mo | Depth | Magnitude | VarRed |
| 90 ; 233 | 87 ; 3 | 92 ; 54 | 1.08e+17 Nm | 59 km | Mw 5.3 | 79.43 |

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

Seismograms
retreive digital waveform data
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Earthquake Information 2001/04/26,23:46(UT)
Earthquake Mechanism Information
Hypocenter Information Provided by JMA
| Origin Time(UT) | Latitude | Longitude | Depth | Magnitude | Region |
| 2001/04/26,23:46 | 28.5 N | 128.8 E | 40 km | Mj 3.9 | NEAR_TOKARA_ISLANDS |
Focal Mechanism Solution Determined Manually
| Strike | Dip | Rake | Mo | Depth | Magnitude | VarRed |
| 255 ; 146 | 72 ; 45 | -131 ; -26 | 3.58e+14 Nm | 53 km | Mw 3.7 | 72.76 |

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

Seismograms
retreive digital waveform data
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Earthquake Information 2001/04/26,17:49(UT)
Earthquake Mechanism Information
Hypocenter Information Provided by JMA
| Origin Time(UT) | Latitude | Longitude | Depth | Magnitude | Region |
| 2001/04/26,17:49 | 43.0 N | 145.9 E | 80 km | Mj 5.9 | OFF_NEMURO_PENINSULA |
Focal Mechanism Solution Determined Manually
| Strike | Dip | Rake | Mo | Depth | Magnitude | VarRed |
| 243 ; 108 | 72 ; 24 | -107 ; -48 | 1.03e+18 Nm | 86 km | Mw 6.0 | 91.73 |

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

Seismograms
retreive digital waveform data
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Earthquake Information 2001/04/26,15:04(UT)
Earthquake Mechanism Information
Hypocenter Information Provided by JMA
| Origin Time(UT) | Latitude | Longitude | Depth | Magnitude | Region |
| 2001/04/26,15:04 | 24.1 N | 126.0 E | 60 km | Mj 3.6 | NEAR_MIYAKOJIMA_ISLAND |
Focal Mechanism Solution Determined Manually
| Strike | Dip | Rake | Mo | Depth | Magnitude | VarRed |
| 104 ; 349 | 75 ; 32 | 61 ; 152 | 2.43e+15 Nm | 77 km | Mw 4.2 | 83.39 |

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

Seismograms
retreive digital waveform data
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Earthquake Information 2001/04/25,17:10(UT)
Earthquake Mechanism Information
Hypocenter Information Provided by JMA
| Origin Time(UT) | Latitude | Longitude | Depth | Magnitude | Region |
| 2001/04/25,17:10 | 43.6 N | 147.3 E | 80 km | Mj 4.6 | E_OFF_HOKKAIDO |
Focal Mechanism Solution Determined Manually
| Strike | Dip | Rake | Mo | Depth | Magnitude | VarRed |
| 252 ; 131 | 75 ; 28 | -114 ; -34 | 6.69e+15 Nm | 80 km | Mw 4.5 | 77.90 |

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

Seismograms
retreive digital waveform data
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Earthquake Information 2001/04/25,14:40(UT)
Earthquake Mechanism Information
Hypocenter Information Provided by JMA
| Origin Time(UT) | Latitude | Longitude | Depth | Magnitude | Region |
| 2001/04/25,14:40 | 32.8 N | 132.3 E | 30 km | Mj 5.6 | HYUGANADA_REGION |
Focal Mechanism Solution Determined Manually
| Strike | Dip | Rake | Mo | Depth | Magnitude | VarRed |
| 145 ; 55 | 89 ; 49 | -139 ; -1 | 4.00e+17 Nm | 35 km | Mw 5.7 | 94.52 |

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

Seismograms
retreive digital waveform data
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Earthquake Information 2001/04/25,13:08(UT)
Earthquake Mechanism Information
Hypocenter Information Provided by JMA
| Origin Time(UT) | Latitude | Longitude | Depth | Magnitude | Region |
| 2001/04/25,13:08 | 37.1 N | 141.2 E | 50 km | Mj 4.4 | E_OFF_FUKUSHIMA_PREF |
Focal Mechanism Solution Determined Manually
| Strike | Dip | Rake | Mo | Depth | Magnitude | VarRed |
| 21 ; 222 | 68 ; 24 | 82 ; 109 | 8.88e+14 Nm | 53 km | Mw 3.9 | 72.71 |

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

Seismograms
retreive digital waveform data
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Earthquake Information 2001/04/23,18:08(UT)
Earthquake Mechanism Information
Hypocenter Information Provided by JMA
| Origin Time(UT) | Latitude | Longitude | Depth | Magnitude | Region |
| 2001/04/23,18:08 | 39.9 N | 143.8 E | 10 km | Mj 3.7 | FAR_E_OFF_SANRIKU |
Focal Mechanism Solution Determined Manually
| Strike | Dip | Rake | Mo | Depth | Magnitude | VarRed |
| 30 ; 200 | 56 ; 34 | 95 ; 82 | 1.01e+15 Nm | 20 km | Mw 4.0 | 66.34 |

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

Seismograms
retreive digital waveform data
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Earthquake Information 2001/04/23,13:56(UT)
Earthquake Mechanism Information
Hypocenter Information Provided by JMA
| Origin Time(UT) | Latitude | Longitude | Depth | Magnitude | Region |
| 2001/04/23,13:56 | 33.1 N | 136.7 E | 430 km | Mj 5.6 | SE_OFF_KII_PENINSULA |
Focal Mechanism Solution Determined Manually
| Strike | Dip | Rake | Mo | Depth | Magnitude | VarRed |
| 94 ; 219 | 79 ; 19 | -74 ; -143 | 5.30e+16 Nm | 400 km | Mw 5.1 | 94.76 |

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

Seismograms
retreive digital waveform data
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Earthquake Information 2001/04/23,11:13(UT)
Earthquake Mechanism Information
Hypocenter Information Provided by JMA
| Origin Time(UT) | Latitude | Longitude | Depth | Magnitude | Region |
| 2001/04/23,11:13 | 39.9 N | 143.7 E | 10 km | Mj 3.7 | FAR_E_OFF_SANRIKU |
Focal Mechanism Solution Determined Manually
| Strike | Dip | Rake | Mo | Depth | Magnitude | VarRed |
| 21 ; 208 | 58 ; 32 | 86 ; 97 | 3.18e+14 Nm | 17 km | Mw 3.6 | 64.82 |

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

Seismograms
retreive digital waveform data
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Earthquake Information 2001/04/23,06:39(UT)
Earthquake Mechanism Information
Hypocenter Information Provided by JMA
| Origin Time(UT) | Latitude | Longitude | Depth | Magnitude | Region |
| 2001/04/23,06:39 | 35.4 N | 133.3 E | 10 km | Mj 3.9 | WESTERN_TOTTORI_PREF |
Focal Mechanism Solution Determined Manually
| Strike | Dip | Rake | Mo | Depth | Magnitude | VarRed |
| 346 ; 76 | 89 ; 88 | -2 ; -179 | 3.70e+14 Nm | 5 km | Mw 3.7 | 88.53 |

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

Seismograms
retreive digital waveform data
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Earthquake Information 2001/04/23,00:04(UT)
Earthquake Mechanism Information
Hypocenter Information Provided by JMA
| Origin Time(UT) | Latitude | Longitude | Depth | Magnitude | Region |
| 2001/04/23,00:04 | 42.5 N | 143.4 E | 60 km | Mj 4.2 | TOKACHI_REGION |
Focal Mechanism Solution Determined Manually
| Strike | Dip | Rake | Mo | Depth | Magnitude | VarRed |
| 268 ; 166 | 79 ; 44 | -133 ; -16 | 7.31e+15 Nm | 68 km | Mw 4.5 | 92.70 |

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

Seismograms
retreive digital waveform data
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Earthquake Information 2001/04/22,07:03(UT)
Earthquake Mechanism Information
Hypocenter Information Provided by JMA
| Origin Time(UT) | Latitude | Longitude | Depth | Magnitude | Region |
| 2001/04/22,07:03 | 33.6 N | 139.4 E | 30 km | Mj 3.5 | NEAR_MIYAKEJIMA_ISLAND |
Focal Mechanism Solution Determined Manually
| Strike | Dip | Rake | Mo | Depth | Magnitude | VarRed |
| 304 ; 34 | 90 ; 57 | 147 ; 0 | 3.25e+14 Nm | 11 km | Mw 3.6 | 80.01 |

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

Seismograms
retreive digital waveform data
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Earthquake Information 2001/04/22,00:53(UT)
Earthquake Mechanism Information
Hypocenter Information Provided by JMA
| Origin Time(UT) | Latitude | Longitude | Depth | Magnitude | Region |
| 2001/04/22,00:53 | 34.8 N | 140.7 E | 60 km | Mj 3.6 | SE_OFF_BOSO_PENINSULA |
Focal Mechanism Solution Determined Manually
| Strike | Dip | Rake | Mo | Depth | Magnitude | VarRed |
| 232 ; 346 | 60 ; 55 | 139 ; 38 | 6.08e+14 Nm | 50 km | Mw 3.8 | 80.75 |

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

Seismograms
retreive digital waveform data
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Earthquake Information 2001/04/21,20:20(UT)
Earthquake Mechanism Information
Hypocenter Information Provided by JMA
| Origin Time(UT) | Latitude | Longitude | Depth | Magnitude | Region |
| 2001/04/21,20:20 | 29.1 N | 131.1 E | 80 km | Mj 3.8 | NEAR_AMAMI-OSHIMA_ISLAND |
Focal Mechanism Solution Determined Manually
| Strike | Dip | Rake | Mo | Depth | Magnitude | VarRed |
| 336 ; 66 | 87 ; 75 | -15 ; -177 | 6.25e+15 Nm | 98 km | Mw 4.5 | 50.36 |

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

Seismograms
retreive digital waveform data
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Earthquake Information 2001/04/20,23:04(UT)
Earthquake Mechanism Information
Hypocenter Information Provided by JMA
| Origin Time(UT) | Latitude | Longitude | Depth | Magnitude | Region |
| 2001/04/20,23:04 | 40.0 N | 142.1 E | 40 km | Mj 3.8 | NE_OFF_IWATE_PREF |
Focal Mechanism Solution Determined Manually
| Strike | Dip | Rake | Mo | Depth | Magnitude | VarRed |
| 162 ; 64 | 75 ; 62 | -151 ; -17 | 3.70e+14 Nm | 44 km | Mw 3.7 | 83.29 |

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

Seismograms
retreive digital waveform data
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Earthquake Information 2001/04/20,10:05(UT)
Earthquake Mechanism Information
Hypocenter Information Provided by JMA
| Origin Time(UT) | Latitude | Longitude | Depth | Magnitude | Region |
| 2001/04/20,10:05 | 42.7 N | 145.4 E | 40 km | Mj 4.6 | OFF_NEMURO_PENINSULA |
Focal Mechanism Solution Determined Manually
| Strike | Dip | Rake | Mo | Depth | Magnitude | VarRed |
| 27 ; 249 | 70 ; 26 | 73 ; 129 | 2.02e+16 Nm | 35 km | Mw 4.8 | 92.89 |

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

Seismograms
retreive digital waveform data
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Earthquake Information 2001/04/20,01:38(UT)
Earthquake Mechanism Information
Hypocenter Information Provided by JMA
| Origin Time(UT) | Latitude | Longitude | Depth | Magnitude | Region |
| 2001/04/20,01:38 | 26.1 N | 128.7 E | 50 km | Mj 4.2 | NEAR_OKINAWAJIMA_ISLAND |
Focal Mechanism Solution Determined Manually
| Strike | Dip | Rake | Mo | Depth | Magnitude | VarRed |
| 42 ; 227 | 60 ; 30 | 88 ; 94 | 5.76e+15 Nm | 20 km | Mw 4.5 | 77.18 |

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

Seismograms
retreive digital waveform data
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Earthquake Information 2001/04/19,16:45(UT)
Earthquake Mechanism Information
Hypocenter Information Provided by JMA
| Origin Time(UT) | Latitude | Longitude | Depth | Magnitude | Region |
| 2001/04/19,16:45 | 36.1 N | 139.8 E | 70 km | Mj 4.4 | SW_IBARAKI_PREF |
Focal Mechanism Solution Determined Manually
| Strike | Dip | Rake | Mo | Depth | Magnitude | VarRed |
| 240 ; 104 | 75 ; 21 | 76 ; 132 | 1.80e+15 Nm | 59 km | Mw 4.1 | 92.82 |

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

Seismograms
retreive digital waveform data
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Earthquake Information 2001/04/18,08:14(UT)
Earthquake Mechanism Information
Hypocenter Information Provided by JMA
| Origin Time(UT) | Latitude | Longitude | Depth | Magnitude | Region |
| 2001/04/18,08:14 | 43.2 N | 147.5 E | 40 km | Mj 4.6 | E_OFF_HOKKAIDO |
Focal Mechanism Solution Determined Manually
| Strike | Dip | Rake | Mo | Depth | Magnitude | VarRed |
| 29 ; 168 | 64 ; 33 | 111 ; 54 | 6.06e+15 Nm | 32 km | Mw 4.5 | 76.81 |

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

Seismograms
retreive digital waveform data
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Earthquake Information 2001/04/18,07:52(UT)
Earthquake Mechanism Information
Hypocenter Information Provided by JMA
| Origin Time(UT) | Latitude | Longitude | Depth | Magnitude | Region |
| 2001/04/18,07:52 | 41.4 N | 141.8 E | 60 km | Mj 3.9 | E_OFF_AOMORI_PREF |
Focal Mechanism Solution Determined Manually
| Strike | Dip | Rake | Mo | Depth | Magnitude | VarRed |
| 281 ; 77 | 54 ; 38 | 105 ; 71 | 6.72e+14 Nm | 50 km | Mw 3.9 | 82.44 |

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

Seismograms
retreive digital waveform data
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Earthquake Information 2001/04/17,13:50(UT)
Earthquake Mechanism Information
Hypocenter Information Provided by JMA
| Origin Time(UT) | Latitude | Longitude | Depth | Magnitude | Region |
| 2001/04/17,13:50 | 23.5 N | 126.4 E | 30 km | Mj 4.0 | FAR_S_OFF_OKINAWAJIMA |
Focal Mechanism Solution Determined Manually
| Strike | Dip | Rake | Mo | Depth | Magnitude | VarRed |
| 292 ; 79 | 75 ; 18 | 100 ; 58 | 3.93e+15 Nm | 14 km | Mw 4.4 | 83.07 |

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

Seismograms
retreive digital waveform data
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Earthquake Information 2001/04/17,04:53(UT)
Earthquake Mechanism Information
Hypocenter Information Provided by JMA
| Origin Time(UT) | Latitude | Longitude | Depth | Magnitude | Region |
| 2001/04/17,04:53 | 45.1 N | 149.9 E | 140 km | Mj 4.7 | KURILE_ISLANDS_REGION |
Focal Mechanism Solution Determined Manually
| Strike | Dip | Rake | Mo | Depth | Magnitude | VarRed |
| 194 ; 30 | 66 ; 25 | 83 ; 105 | 2.11e+16 Nm | 101 km | Mw 4.8 | 75.78 |

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

Seismograms
retreive digital waveform data
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Earthquake Information 2001/04/17,00:40(UT)
Earthquake Mechanism Information
Hypocenter Information Provided by JMA
| Origin Time(UT) | Latitude | Longitude | Depth | Magnitude | Region |
| 2001/04/17,00:40 | 35.6 N | 141.2 E | 30 km | Mj 5.2 | NEAR_CHOSHI_CITY |
Focal Mechanism Solution Determined Manually
| Strike | Dip | Rake | Mo | Depth | Magnitude | VarRed |
| 203 ; 112 | 87 ; 81 | 9 ; 177 | 2.60e+16 Nm | 38 km | Mw 4.9 | 84.47 |

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

Seismograms
retreive digital waveform data
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Earthquake Information 2001/04/17,00:02(UT)
Earthquake Mechanism Information
Hypocenter Information Provided by JMA
| Origin Time(UT) | Latitude | Longitude | Depth | Magnitude | Region |
| 2001/04/17,00:02 | 29.4 N | 130.7 E | 70 km | Mj 4.0 | NEAR_AMAMI-OSHIMA_ISLAND |
Focal Mechanism Solution Determined Manually
| Strike | Dip | Rake | Mo | Depth | Magnitude | VarRed |
| 75 ; 215 | 68 ; 28 | 108 ; 53 | 2.67e+15 Nm | 38 km | Mw 4.3 | 89.41 |

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

Seismograms
retreive digital waveform data
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Earthquake Information 2001/04/16,15:01(UT)
Earthquake Mechanism Information
Hypocenter Information Provided by JMA
| Origin Time(UT) | Latitude | Longitude | Depth | Magnitude | Region |
| 2001/04/16,15:01 | 28.5 N | 129.8 E | 60 km | Mj 4.3 | NEAR_AMAMI-OSHIMA_ISLAND |
Focal Mechanism Solution Determined Manually
| Strike | Dip | Rake | Mo | Depth | Magnitude | VarRed |
| 299 ; 31 | 83 ; 69 | 159 ; 7 | 6.97e+15 Nm | 53 km | Mw 4.5 | 81.68 |

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

Seismograms
retreive digital waveform data
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Earthquake Information 2001/04/16,10:05(UT)
Earthquake Mechanism Information
Hypocenter Information Provided by JMA
| Origin Time(UT) | Latitude | Longitude | Depth | Magnitude | Region |
| 2001/04/16,10:05 | 35.5 N | 135.9 E | 10 km | Mj 4.4 | WESTERN_FUKUI_PREF |
Focal Mechanism Solution Determined Manually
| Strike | Dip | Rake | Mo | Depth | Magnitude | VarRed |
| 199 ; 345 | 50 ; 46 | 114 ; 64 | 1.06e+15 Nm | 14 km | Mw 4.0 | 88.59 |

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

Seismograms
retreive digital waveform data
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Earthquake Information 2001/04/16,09:58(UT)
Earthquake Mechanism Information
Hypocenter Information Provided by JMA
| Origin Time(UT) | Latitude | Longitude | Depth | Magnitude | Region |
| 2001/04/16,09:58 | 32.7 N | 132.4 E | 40 km | Mj 3.7 | HYUGANADA_REGION |
Focal Mechanism Solution Determined Manually
| Strike | Dip | Rake | Mo | Depth | Magnitude | VarRed |
| 217 ; 55 | 64 ; 27 | -98 ; -74 | 1.87e+14 Nm | 14 km | Mw 3.5 | 65.56 |

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

Seismograms
retreive digital waveform data
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Earthquake Information 2001/04/15,08:54(UT)
Earthquake Mechanism Information
Hypocenter Information Provided by JMA
| Origin Time(UT) | Latitude | Longitude | Depth | Magnitude | Region |
| 2001/04/15,08:54 | 33.7 N | 135.5 E | 20 km | Mj 4.1 | SOUTHERN_WAKAYAMA_PREF |
Focal Mechanism Solution Determined Manually
| Strike | Dip | Rake | Mo | Depth | Magnitude | VarRed |
| 43 ; 141 | 74 ; 63 | 152 ; 18 | 2.50e+14 Nm | 8 km | Mw 3.6 | 83.62 |

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

Seismograms
retreive digital waveform data
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Earthquake Information 2001/04/14,08:12(UT)
Earthquake Mechanism Information
Hypocenter Information Provided by JMA
| Origin Time(UT) | Latitude | Longitude | Depth | Magnitude | Region |
| 2001/04/14,08:12 | 28.1 N | 129.3 E | 30 km | Mj 3.5 | NEAR_AMAMI-OSHIMA_ISLAND |
Focal Mechanism Solution Determined Manually
| Strike | Dip | Rake | Mo | Depth | Magnitude | VarRed |
| 35 ; 260 | 63 ; 36 | -115 ; -51 | 8.11e+14 Nm | 41 km | Mw 3.9 | 74.29 |

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

Seismograms
retreive digital waveform data
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Earthquake Information 2001/04/14,01:44(UT)
Earthquake Mechanism Information
Hypocenter Information Provided by JMA
| Origin Time(UT) | Latitude | Longitude | Depth | Magnitude | Region |
| 2001/04/14,01:44 | 35.2 N | 133.4 E | 10 km | Mj 4.3 | WESTERN_TOTTORI_PREF |
Focal Mechanism Solution Determined Manually
| Strike | Dip | Rake | Mo | Depth | Magnitude | VarRed |
| 249 ; 77 | 47 ; 43 | -95 ; -84 | 8.72e+14 Nm | 5 km | Mw 3.9 | 63.12 |

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

Seismograms
retreive digital waveform data
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Earthquake Information 2001/04/14,01:37(UT)
Earthquake Mechanism Information
Hypocenter Information Provided by JMA
| Origin Time(UT) | Latitude | Longitude | Depth | Magnitude | Region |
| 2001/04/14,01:37 | 30.1 N | 131.3 E | 40 km | Mj 3.9 | E_OFF_TANEGASHIMA_ISLAND |
Focal Mechanism Solution Determined Manually
| Strike | Dip | Rake | Mo | Depth | Magnitude | VarRed |
| 19 ; 221 | 71 ; 20 | 83 ; 111 | 5.99e+15 Nm | 32 km | Mw 4.5 | 64.85 |

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

Seismograms
retreive digital waveform data
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Earthquake Information 2001/04/13,23:51(UT)
Earthquake Mechanism Information
Hypocenter Information Provided by JMA
| Origin Time(UT) | Latitude | Longitude | Depth | Magnitude | Region |
| 2001/04/13,23:51 | 31.7 N | 132.0 E | 30 km | Mj 3.5 | HYUGANADA_REGION |
Focal Mechanism Solution Determined Manually
| Strike | Dip | Rake | Mo | Depth | Magnitude | VarRed |
| 50 ; 228 | 72 ; 18 | 91 ; 88 | 6.89e+14 Nm | 17 km | Mw 3.9 | 50.42 |

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

Seismograms
retreive digital waveform data
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Earthquake Information 2001/04/13,23:16(UT)
Earthquake Mechanism Information
Hypocenter Information Provided by JMA
| Origin Time(UT) | Latitude | Longitude | Depth | Magnitude | Region |
| 2001/04/13,23:16 | 42.8 N | 145.3 E | 50 km | Mj 5.4 | OFF_NEMURO_PENINSULA |
Focal Mechanism Solution Determined Manually
| Strike | Dip | Rake | Mo | Depth | Magnitude | VarRed |
| 21 ; 242 | 64 ; 32 | 69 ; 126 | 2.16e+17 Nm | 32 km | Mw 5.5 | 88.97 |

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

Seismograms
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Earthquake Information 2001/04/13,21:45(UT)
Earthquake Mechanism Information
Hypocenter Information Provided by JMA
| Origin Time(UT) | Latitude | Longitude | Depth | Magnitude | Region |
| 2001/04/13,21:45 | 37.2 N | 142.2 E | 40 km | Mj 3.6 | E_OFF_FUKUSHIMA_PREF |
Focal Mechanism Solution Determined Manually
| Strike | Dip | Rake | Mo | Depth | Magnitude | VarRed |
| 194 ; 297 | 83 ; 29 | -62 ; -165 | 9.70e+13 Nm | 17 km | Mw 3.3 | 60.91 |

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

Seismograms
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Earthquake Information 2001/04/13,19:48(UT)
Earthquake Mechanism Information
Hypocenter Information Provided by JMA
| Origin Time(UT) | Latitude | Longitude | Depth | Magnitude | Region |
| 2001/04/13,19:48 | 36.0 N | 141.2 E | 40 km | Mj 3.6 | E_OFF_IBARAKI_PREF |
Focal Mechanism Solution Determined Manually
| Strike | Dip | Rake | Mo | Depth | Magnitude | VarRed |
| 24 ; 261 | 80 ; 18 | 75 ; 146 | 7.98e+14 Nm | 23 km | Mw 3.9 | 87.61 |

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

Seismograms
retreive digital waveform data
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Earthquake Information 2001/04/12,07:02(UT)
Earthquake Mechanism Information
Hypocenter Information Provided by JMA
| Origin Time(UT) | Latitude | Longitude | Depth | Magnitude | Region |
| 2001/04/12,07:02 | 37.3 N | 141.7 E | 40 km | Mj 5.3 | E_OFF_FUKUSHIMA_PREF |
Focal Mechanism Solution Determined Manually
| Strike | Dip | Rake | Mo | Depth | Magnitude | VarRed |
| 29 ; 198 | 71 ; 19 | 93 ; 80 | 5.31e+16 Nm | 41 km | Mw 5.1 | 93.02 |

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

Seismograms
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Earthquake Information 2001/04/12,06:19(UT)
Earthquake Mechanism Information
Hypocenter Information Provided by JMA
| Origin Time(UT) | Latitude | Longitude | Depth | Magnitude | Region |
| 2001/04/12,06:19 | 40.7 N | 142.6 E | 20 km | Mj 3.5 | E_OFF_AOMORI_PREF |
Focal Mechanism Solution Determined Manually
| Strike | Dip | Rake | Mo | Depth | Magnitude | VarRed |
| 138 ; 283 | 63 ; 32 | -72 ; -120 | 1.27e+14 Nm | 20 km | Mw 3.4 | 77.57 |

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

Seismograms
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Earthquake Information 2001/04/10,21:31(UT)
Earthquake Mechanism Information
Hypocenter Information Provided by JMA
| Origin Time(UT) | Latitude | Longitude | Depth | Magnitude | Region |
| 2001/04/10,21:31 | 24.0 N | 122.4 E | 30 km | Mj 4.1 | NW_OFF_ISHIGAKIJIMA_IS |
Focal Mechanism Solution Determined Manually
| Strike | Dip | Rake | Mo | Depth | Magnitude | VarRed |
| 69 ; 194 | 77 ; 23 | -71 ; -143 | 4.38e+15 Nm | 38 km | Mw 4.4 | 77.48 |

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

Seismograms
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Earthquake Information 2001/04/10,21:13(UT)
Earthquake Mechanism Information
Hypocenter Information Provided by JMA
| Origin Time(UT) | Latitude | Longitude | Depth | Magnitude | Region |
| 2001/04/10,21:13 | 44.8 N | 149.4 E | 90 km | Mj 4.6 | SE_OFF_ETOROFU |
Focal Mechanism Solution Determined Manually
| Strike | Dip | Rake | Mo | Depth | Magnitude | VarRed |
| 213 ; 99 | 79 ; 25 | 67 ; 154 | 1.00e+16 Nm | 77 km | Mw 4.6 | 57.05 |

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

Seismograms
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Earthquake Information 2001/04/10,17:41(UT)
Earthquake Mechanism Information
Hypocenter Information Provided by JMA
| Origin Time(UT) | Latitude | Longitude | Depth | Magnitude | Region |
| 2001/04/10,17:41 | 24.0 N | 121.5 E | 40 km | Mj 3.6 | TAIWAN_REGION |
Focal Mechanism Solution Determined Manually
| Strike | Dip | Rake | Mo | Depth | Magnitude | VarRed |
| 175 ; 273 | 82 ; 45 | -46 ; -169 | 7.58e+14 Nm | 32 km | Mw 3.9 | 80.86 |

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

Seismograms
retreive digital waveform data
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Earthquake Information 2001/04/10,16:02(UT)
Earthquake Mechanism Information
Hypocenter Information Provided by JMA
| Origin Time(UT) | Latitude | Longitude | Depth | Magnitude | Region |
| 2001/04/10,16:02 | 37.2 N | 141.4 E | 50 km | Mj 3.9 | E_OFF_FUKUSHIMA_PREF |
Focal Mechanism Solution Determined Manually
| Strike | Dip | Rake | Mo | Depth | Magnitude | VarRed |
| 8 ; 201 | 72 ; 18 | 86 ; 102 | 5.68e+14 Nm | 44 km | Mw 3.8 | 91.98 |

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

Seismograms
retreive digital waveform data
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Earthquake Information 2001/04/10,01:04(UT)
Earthquake Mechanism Information
Hypocenter Information Provided by JMA
| Origin Time(UT) | Latitude | Longitude | Depth | Magnitude | Region |
| 2001/04/10,01:04 | 35.3 N | 140.4 E | 100 km | Mj 4.7 | KUJUKURI_COAST_BOSO_PEN |
Focal Mechanism Solution Determined Manually
| Strike | Dip | Rake | Mo | Depth | Magnitude | VarRed |
| 312 ; 74 | 85 ; 10 | 98 ; 33 | 1.81e+16 Nm | 80 km | Mw 4.8 | 93.44 |

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

Seismograms
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Earthquake Information 2001/04/09,23:29(UT)
Earthquake Mechanism Information
Hypocenter Information Provided by JMA
| Origin Time(UT) | Latitude | Longitude | Depth | Magnitude | Region |
| 2001/04/09,23:29 | 33.1 N | 137.8 E | 340 km | Mj 4.5 | FAR_S_OFF_TOKAI_DISTRICT |
Focal Mechanism Solution Determined Manually
| Strike | Dip | Rake | Mo | Depth | Magnitude | VarRed |
| 39 ; 139 | 85 ; 26 | -65 ; -170 | 4.18e+15 Nm | 340 km | Mw 4.4 | 80.35 |

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

Seismograms
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Earthquake Information 2001/04/09,06:44(UT)
Earthquake Mechanism Information
Hypocenter Information Provided by JMA
| Origin Time(UT) | Latitude | Longitude | Depth | Magnitude | Region |
| 2001/04/09,06:44 | 36.8 N | 141.3 E | 40 km | Mj 3.5 | E_OFF_IBARAKI_PREF |
Focal Mechanism Solution Determined Manually
| Strike | Dip | Rake | Mo | Depth | Magnitude | VarRed |
| 167 ; 301 | 83 ; 10 | -83 ; -135 | 1.40e+14 Nm | 53 km | Mw 3.4 | 59.99 |

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

Seismograms
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Earthquake Information 2001/04/08,23:56(UT)
Earthquake Mechanism Information
Hypocenter Information Provided by JMA
| Origin Time(UT) | Latitude | Longitude | Depth | Magnitude | Region |
| 2001/04/08,23:56 | 42.3 N | 144.0 E | 50 km | Mj 3.6 | SE_OFF_TOKACHI |
Focal Mechanism Solution Determined Manually
| Strike | Dip | Rake | Mo | Depth | Magnitude | VarRed |
| 24 ; 246 | 71 ; 25 | 74 ; 129 | 4.18e+14 Nm | 32 km | Mw 3.7 | 84.61 |

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

Seismograms
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Earthquake Information 2001/04/08,16:18(UT)
Earthquake Mechanism Information
Hypocenter Information Provided by JMA
| Origin Time(UT) | Latitude | Longitude | Depth | Magnitude | Region |
| 2001/04/08,16:18 | 31.7 N | 131.9 E | 40 km | Mj 3.6 | HYUGANADA_REGION |
Focal Mechanism Solution Determined Manually
| Strike | Dip | Rake | Mo | Depth | Magnitude | VarRed |
| 176 ; 358 | 86 ; 4 | -90 ; -88 | 1.40e+15 Nm | 20 km | Mw 4.1 | 84.52 |

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

Seismograms
retreive digital waveform data
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Earthquake Information 2001/04/08,13:43(UT)
Earthquake Mechanism Information
Hypocenter Information Provided by JMA
| Origin Time(UT) | Latitude | Longitude | Depth | Magnitude | Region |
| 2001/04/08,13:43 | 24.2 N | 123.6 E | 40 km | Mj 4.4 | NEAR_ISHIGAKIJIMA_ISLAND |
Focal Mechanism Solution Determined Manually
| Strike | Dip | Rake | Mo | Depth | Magnitude | VarRed |
| 16 ; 165 | 57 ; 37 | 108 ; 64 | 1.32e+15 Nm | 17 km | Mw 4.0 | 81.75 |

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

Seismograms
retreive digital waveform data
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Earthquake Information 2001/04/08,08:35(UT)
Earthquake Mechanism Information
Hypocenter Information Provided by JMA
| Origin Time(UT) | Latitude | Longitude | Depth | Magnitude | Region |
| 2001/04/08,08:35 | 25.2 N | 123.7 E | 130 km | Mj 4.0 | NW_OFF_ISHIGAKIJIMA_IS |
Focal Mechanism Solution Determined Manually
| Strike | Dip | Rake | Mo | Depth | Magnitude | VarRed |
| 351 ; 120 | 54 ; 49 | -54 ; -129 | 1.30e+15 Nm | 104 km | Mw 4.0 | 84.40 |

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

Seismograms
retreive digital waveform data
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Earthquake Information 2001/04/06,21:43(UT)
Earthquake Mechanism Information
Hypocenter Information Provided by JMA
| Origin Time(UT) | Latitude | Longitude | Depth | Magnitude | Region |
| 2001/04/06,21:43 | 39.7 N | 142.3 E | 30 km | Mj 3.7 | E_OFF_IWATE_PREF |
Focal Mechanism Solution Determined Manually
| Strike | Dip | Rake | Mo | Depth | Magnitude | VarRed |
| 89 ; 271 | 78 ; 12 | -91 ; -87 | 3.51e+14 Nm | 47 km | Mw 3.7 | 89.24 |

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

Seismograms
retreive digital waveform data
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Earthquake Information 2001/04/06,16:54(UT)
Earthquake Mechanism Information
Hypocenter Information Provided by JMA
| Origin Time(UT) | Latitude | Longitude | Depth | Magnitude | Region |
| 2001/04/06,16:54 | 30.6 N | 131.2 E | 30 km | Mj 3.8 | NEAR_TANEGASHIMA_ISLAND |
Focal Mechanism Solution Determined Manually
| Strike | Dip | Rake | Mo | Depth | Magnitude | VarRed |
| 27 ; 159 | 64 ; 36 | 115 ; 48 | 3.58e+15 Nm | 26 km | Mw 4.3 | 81.50 |

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

Seismograms
retreive digital waveform data
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Earthquake Information 2001/04/06,11:15(UT)
Earthquake Mechanism Information
Hypocenter Information Provided by JMA
| Origin Time(UT) | Latitude | Longitude | Depth | Magnitude | Region |
| 2001/04/06,11:15 | 36.9 N | 135.5 E | 10 km | Mj 4.1 | NW_OFF_HOKURIKU_DISTRICT |
Focal Mechanism Solution Determined Manually
| Strike | Dip | Rake | Mo | Depth | Magnitude | VarRed |
| 13 ; 195 | 56 ; 34 | 89 ; 92 | 2.00e+15 Nm | 5 km | Mw 4.2 | 91.01 |

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

Seismograms
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Earthquake Information 2001/04/06,09:50(UT)
Earthquake Mechanism Information
Hypocenter Information Provided by JMA
| Origin Time(UT) | Latitude | Longitude | Depth | Magnitude | Region |
| 2001/04/06,09:50 | 41.9 N | 141.6 E | 120 km | Mj 3.5 | S_OFF_TOMAKOMAI |
Focal Mechanism Solution Determined Manually
| Strike | Dip | Rake | Mo | Depth | Magnitude | VarRed |
| 9 ; 209 | 47 ; 45 | -104 ; -75 | 9.65e+14 Nm | 110 km | Mw 4.0 | 59.39 |

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

Seismograms
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Earthquake Information 2001/04/05,17:50(UT)
Earthquake Mechanism Information
Hypocenter Information Provided by JMA
| Origin Time(UT) | Latitude | Longitude | Depth | Magnitude | Region |
| 2001/04/05,17:50 | 32.9 N | 139.3 E | 210 km | Mj 4.3 | NEAR_HACHIJOJIMA_ISLAND |
Focal Mechanism Solution Determined Manually
| Strike | Dip | Rake | Mo | Depth | Magnitude | VarRed |
| 112 ; 216 | 79 ; 38 | 126 ; 18 | 3.22e+15 Nm | 200 km | Mw 4.3 | 78.15 |

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

Seismograms
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Earthquake Information 2001/04/05,09:48(UT)
Earthquake Mechanism Information
Hypocenter Information Provided by JMA
| Origin Time(UT) | Latitude | Longitude | Depth | Magnitude | Region |
| 2001/04/05,09:48 | 34.0 N | 132.7 E | 50 km | Mj 3.5 | AKINADA_SETONAIKAI |
Focal Mechanism Solution Determined Manually
| Strike | Dip | Rake | Mo | Depth | Magnitude | VarRed |
| 301 ; 165 | 52 ; 47 | -120 ; -57 | 1.08e+14 Nm | 44 km | Mw 3.3 | 72.06 |

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

Seismograms
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Earthquake Information 2001/04/04,22:22(UT)
Earthquake Mechanism Information
Hypocenter Information Provided by JMA
| Origin Time(UT) | Latitude | Longitude | Depth | Magnitude | Region |
| 2001/04/04,22:22 | 39.4 N | 141.8 E | 100 km | Mj 4.7 | SOUTHERN_IWATE_PREF |
Focal Mechanism Solution Determined Manually
| Strike | Dip | Rake | Mo | Depth | Magnitude | VarRed |
| 202 ; 76 | 65 ; 39 | -120 ; -43 | 5.81e+15 Nm | 110 km | Mw 4.5 | 95.84 |

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

Seismograms
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Earthquake Information 2001/04/04,01:16(UT)
Earthquake Mechanism Information
Hypocenter Information Provided by JMA
| Origin Time(UT) | Latitude | Longitude | Depth | Magnitude | Region |
| 2001/04/04,01:16 | 44.1 N | 147.4 E | 90 km | Mj 4.6 | E_OFF_HOKKAIDO |
Focal Mechanism Solution Determined Manually
| Strike | Dip | Rake | Mo | Depth | Magnitude | VarRed |
| 49 ; 153 | 89 ; 5 | 95 ; 13 | 1.31e+16 Nm | 92 km | Mw 4.7 | 73.25 |

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

Seismograms
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Earthquake Information 2001/04/03,15:04(UT)
Earthquake Mechanism Information
Hypocenter Information Provided by JMA
| Origin Time(UT) | Latitude | Longitude | Depth | Magnitude | Region |
| 2001/04/03,15:04 | 35.0 N | 138.1 E | 30 km | Mj 4.0 | CENTRAL_SHIZUOKA_PREF |
Focal Mechanism Solution Determined Manually
| Strike | Dip | Rake | Mo | Depth | Magnitude | VarRed |
| 226 ; 322 | 83 ; 48 | -43 ; -171 | 8.73e+14 Nm | 32 km | Mw 3.9 | 58.26 |

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

Seismograms
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Earthquake Information 2001/04/03,14:57(UT)
Earthquake Mechanism Information
Hypocenter Information Provided by JMA
| Origin Time(UT) | Latitude | Longitude | Depth | Magnitude | Region |
| 2001/04/03,14:57 | 35.0 N | 138.1 E | 30 km | Mj 5.3 | CENTRAL_SHIZUOKA_PREF |
Focal Mechanism Solution Determined Manually
| Strike | Dip | Rake | Mo | Depth | Magnitude | VarRed |
| 214 ; 341 | 66 ; 36 | -62 ; -137 | 8.17e+16 Nm | 35 km | Mw 5.2 | 93.51 |

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

Seismograms
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Earthquake Information 2001/04/03,12:14(UT)
Earthquake Mechanism Information
Hypocenter Information Provided by JMA
| Origin Time(UT) | Latitude | Longitude | Depth | Magnitude | Region |
| 2001/04/03,12:14 | 33.8 N | 132.0 E | 70 km | Mj 4.9 | IYONADA_SETONAIKAI |
Focal Mechanism Solution Determined Manually
| Strike | Dip | Rake | Mo | Depth | Magnitude | VarRed |
| 177 ; 287 | 76 ; 35 | -58 ; -155 | 1.31e+16 Nm | 65 km | Mw 4.7 | 96.91 |

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

Seismograms
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Earthquake Information 2001/04/02,21:15(UT)
Earthquake Mechanism Information
Hypocenter Information Provided by JMA
| Origin Time(UT) | Latitude | Longitude | Depth | Magnitude | Region |
| 2001/04/02,21:15 | 42.7 N | 143.4 E | 90 km | Mj 3.6 | TOKACHI_REGION |
Focal Mechanism Solution Determined Manually
| Strike | Dip | Rake | Mo | Depth | Magnitude | VarRed |
| 139 ; 29 | 72 ; 43 | 50 ; 153 | 4.68e+14 Nm | 92 km | Mw 3.7 | 55.92 |

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

Seismograms
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Earthquake Information 2001/04/02,19:54(UT)
Earthquake Mechanism Information
Hypocenter Information Provided by JMA
| Origin Time(UT) | Latitude | Longitude | Depth | Magnitude | Region |
| 2001/04/02,19:54 | 40.6 N | 141.9 E | 60 km | Mj 5.4 | E_OFF_AOMORI_PREF |
Focal Mechanism Solution Determined Manually
| Strike | Dip | Rake | Mo | Depth | Magnitude | VarRed |
| 261 ; 112 | 58 ; 36 | -108 ; -64 | 1.72e+17 Nm | 59 km | Mw 5.5 | 92.45 |

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

Seismograms
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Earthquake Information 2001/04/02,15:20(UT)
Earthquake Mechanism Information
Hypocenter Information Provided by JMA
| Origin Time(UT) | Latitude | Longitude | Depth | Magnitude | Region |
| 2001/04/02,15:20 | 42.0 N | 142.5 E | 60 km | Mj 4.0 | S_OFF_URAKAWA |
Focal Mechanism Solution Determined Manually
| Strike | Dip | Rake | Mo | Depth | Magnitude | VarRed |
| 19 ; 273 | 83 ; 25 | 66 ; 163 | 3.52e+14 Nm | 62 km | Mw 3.7 | 70.71 |

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

Seismograms
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Earthquake Information 2001/04/02,02:47(UT)
Earthquake Mechanism Information
Hypocenter Information Provided by JMA
| Origin Time(UT) | Latitude | Longitude | Depth | Magnitude | Region |
| 2001/04/02,02:47 | 43.5 N | 147.8 E | 30 km | Mj 4.3 | E_OFF_HOKKAIDO |
Focal Mechanism Solution Determined Manually
| Strike | Dip | Rake | Mo | Depth | Magnitude | VarRed |
| 134 ; 26 | 63 ; 59 | 35 ; 148 | 3.27e+15 Nm | 32 km | Mw 4.3 | 53.02 |

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

Seismograms
retreive digital waveform data
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Earthquake Information 2001/04/01,08:30(UT)
Earthquake Mechanism Information
Hypocenter Information Provided by JMA
| Origin Time(UT) | Latitude | Longitude | Depth | Magnitude | Region |
| 2001/04/01,08:30 | 36.8 N | 139.4 E | shallow | Mj 4.0 | TOCHIGI_GUNMA_BORDER |
Focal Mechanism Solution Determined Manually
| Strike | Dip | Rake | Mo | Depth | Magnitude | VarRed |
| 73 ; 185 | 67 ; 48 | 134 ; 31 | 2.14e+15 Nm | 5 km | Mw 4.2 | 91.18 |

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

Seismograms
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