Magnitude 4.4 IZU ISLANDS, JAPAN REGION
Saturday, February 21, 2009 at 12:43:37 UTC
Preliminary Earthquake Report
| Magnitude | 4.4 |
|---|---|
| Date-Time |
Time of Earthquake in other Time Zones |
| Location | 31.54N 137.89E |
| Depth | 393 kilometers |
| Region | IZU ISLANDS, JAPAN REGION |
| Distances |
250 km (155 miles) SW of Hachijo-jima, Izu Islands, Japan 350 km (220 miles) S of Hamamatsu, Honshu, Japan 370 km (230 miles) SSE of Tsu, Honshu, Japan 490 km (305 miles) SSW of TOKYO, Japan |
| Location Uncertainty | Error estimate: horizontal +/- 7.3 km; depth +/- 8.8 km |
| Parameters | Nst=55, Nph=55, Dmin=555.6 km, Rmss=0.77 sec, Erho=7.3 km, Erzz=8.8 km, Gp=112.4 degrees |
| Source | USGS NEIC (WDCS-D) |
| Event ID | usdia7 |
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Earthquake Information for Japan
Earthquake Information for Asia
Earthquakes: Frequently Asked Questions
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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.
More->
Preliminary Earthquake Report
U.S. Geological Survey, National Earthquake Information Center
World Data Center for Seismology, Denver
