Magnitude 4.3 IZU ISLANDS, JAPAN REGION
Friday, April 10, 2009 at 17:36:38 UTC
Preliminary Earthquake Report
Magnitude | 4.3 |
---|---|
Date-Time |
Time of Earthquake in other Time Zones |
Location | 33.17N 140.87E |
Depth | 59 kilometers |
Region | IZU ISLANDS, JAPAN REGION |
Distances |
100 km (65 miles) E of Hachijo-jima, Izu Islands, Japan 295 km (185 miles) SSE of TOKYO, Japan 305 km (190 miles) SE of Shizuoka, Honshu, Japan 340 km (210 miles) ESE of Hamamatsu, Honshu, Japan |
Location Uncertainty | Error estimate: horizontal +/- 10.1 km; depth +/- 16.0 km |
Parameters | Nst=34, Nph=34, Dmin=445.6 km, Rmss=1.10 sec, Erho=10.1 km, Erzz=16.0 km, Gp=104.7 degrees |
Source | USGS NEIC (WDCS-D) |
Remarks | Recorded (1 JMA) on Hachijo-jima. |
Event ID | usfgd6 |
NB:
The official magnitude for this earthquake is indicated at the top of this page.
This was the best available estimate of the earthquake's size,
at the time that this page was created. Other magnitudes associated
with web pages linked from here are those determined at various times
following the earthquake with different types of seismic data.
Although, given the data used, they are legitimate estimates of magnitude
they are not considered the official magnitude.
The region name is an automatically generated name
from the Flinn-Engdahl (F-E) seismic and geographical regionalization scheme.
The boundaries of
these regions are defined at one-degree intervals and therefore differ from
irregular political boundaries.
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Preliminary Earthquake Report
U.S. Geological Survey, National Earthquake Information Center
World Data Center for Seismology, Denver