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Earthquake Activity


Magnitude 7.1 NICOBAR ISLANDS, INDIA REGION
Sunday, December 26, 2004 at 04:21:29 UTC

Preliminary Earthquake Report
U.S. Geological Survey, National Earthquake Information Center
World Data Center for Seismology, Denver

World Location

Regional Location

Magnitude 7.1
Date-Time Sunday, December 26, 2004 at 04:21:29 (UTC) - Coordinated Universal Time
Sunday, December 26, 2004 at 09:51:29 AM local time at epicenter
Time of Earthquake in other Time Zones
Location 6.89N 92.94E
Depth 39.7 kilometers
Region NICOBAR ISLANDS, INDIA REGION
Reference 130 km (80 miles) SSW of Misha, Nicobar Islands, India
305 km (190 miles) WNW of Banda Aceh, Sumatra, Indonesia
1125 km (700 miles) SW of BANGKOK, Thailand
2910 km (1810 miles) SE of NEW DELHI, Delhi, India
Location Quality Error estimate: horizontal +/- 6.5 km; depth +/- 12.4 km
Location Quality
Parameters
Nst=168, Nph=168, Dmin=1350.1 km, Rmss=0.90 sec, Erho=6.5 km, Erzz=12.4 km, Gp=35.0 degrees
Source 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. More->

 

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