Magnitude 4.5 RYUKYU ISLANDS, JAPAN
Saturday, November 13, 2004 at 15:21:54 UTC
Preliminary Earthquake Report
U.S. Geological Survey, National Earthquake Information Center
World Data Center for Seismology, Denver
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Magnitude
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4.5
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Date-Time
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Saturday, November 13, 2004 at 15:21:54 (UTC) - Coordinated Universal Time
Sunday, November 14, 2004 at 12:21:54 AM local time at epicenter
Time of Earthquake in other Time Zones
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Location
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25.67N 126.26E
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Depth
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134.7 kilometers
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Region
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RYUKYU ISLANDS, JAPAN
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Reference
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150 km (95 miles) WSW of Naha, Okinawa, Japan
250 km (155 miles) NE of Ishigaki-jima, Ryukyu Islands, Japan
460 km (285 miles) ENE of Su-ao, Taiwan
1695 km (1060 miles) SW of TOKYO, Japan
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Location Quality
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Error estimate: horizontal +/- 12.7 km; depth +/- 21.6 km
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Location Quality Parameters
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Nst=33, Nph=33, Dmin=1654.6 km, Rmss=0.90 sec, Erho=12.7 km, Erzz=21.6 km, Gp=121.6 degrees
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Source
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USGS NEIC (WDCS-D)
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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.
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