Re: Japan earthquake - 08:16 JST 30 Jun 2011 36.2N 138.0E very shallow M5.5 Nagano-ken Chubu
These 2 quakes on
the USGS list, (I think they added the shallower one recently), are at about the same time and location of the M5.5 quake in the first post.
- This event has been reviewed by a seismologist.
<table id="parameters" summary="Earthquake Details"><tbody><tr><th>
Magnitude</th><td>
4.7</td></tr><tr><th>
Date-Time</th><td>
</td></tr><tr><th>
Location</th><td>36.064°N, 137.735°E</td></tr><tr><th>
Depth</th><td>20.5 km (12.7 miles)</td></tr><tr><th>
Region</th><td>EASTERN HONSHU, JAPAN</td></tr><tr><th>
Distances</th><td>
- 76 km (47 miles) SSW (211°) from Nagano, Honshu, Japan
- 85 km (53 miles) WNW (299°) from Kofu, Honshu, Japan
- 114 km (71 miles) ESE (120°) from Kanazawa, Honshu, Japan
- 187 km (116 miles) WNW (284°) from TOKYO, Japan
</td></tr><tr><th>
Location Uncertainty</th><td>horizontal +/- 22.8 km (14.2 miles); depth +/- 6.4 km (4.0 miles)</td></tr><tr><th>
Parameters</th><td>NST= 63, Nph= 63, Dmin=102.4 km, Rmss=1.35 sec, Gp=130°,
M-type=body wave magnitude (Mb), Version=6</td></tr><tr><th>
Source</th><td>
</td></tr><tr><th>
Event ID</th><td>usc0004ktj</td></tr></tbody></table>
=======================================================
- This event has been reviewed by a seismologist.
<table id="parameters" summary="Earthquake Details"><tbody><tr><th>
Magnitude</th><td>
4.9</td></tr><tr><th>
Date-Time</th><td>
- Wednesday, June 29, 2011 at 23:16:41 UTC
- Thursday, June 30, 2011 at 08:16:41 AM at epicenter
</td></tr><tr><th>
Location</th><td>36.270°N, 137.906°E</td></tr><tr><th>
Depth</th><td>12.2 km (7.6 miles)</td></tr><tr><th>
Region</th><td>EASTERN HONSHU, JAPAN</td></tr><tr><th>
Distances</th><td>
- 48 km (30 miles) SSW (209°) from Nagano, Honshu, Japan
- 87 km (54 miles) NW (317°) from Kofu, Honshu, Japan
- 105 km (65 miles) W (262°) from Maebashi, Honshu, Japan
- 179 km (111 miles) WNW (293°) from TOKYO, Japan
</td></tr><tr><th>
Location Uncertainty</th><td>horizontal +/- 15.2 km (9.4 miles); depth +/- 5.5 km (3.4 miles)</td></tr><tr><th>
Parameters</th><td>NST=165, Nph=167, Dmin=40.1 km, Rmss=1.27 sec, Gp= 86°,
M-type=body wave magnitude (Mb), Version=8</td></tr><tr><th>
Source</th><td>
</td></tr><tr><th>
Event ID</th><td>usc0004ktb</td></tr></tbody></table>