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Earthquake Activity


Magnitude 5.0 KERMADEC ISLANDS, NEW ZEALAND
Thursday, September 30, 2004 at 18:48:18 UTC

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

World Location

Regional Location

Magnitude 5.0
Date-Time Thursday, September 30, 2004 at 18:48:18 (UTC) - Coordinated Universal Time
Friday, October 01, 2004 at 06:48:18 AM local time at epicenter
Time of Earthquake in other Time Zones
Location 30.04S 177.92W
Depth 95 kilometers
Region KERMADEC ISLANDS, NEW ZEALAND
Reference 90 km (55 miles) S of Raoul Island, Kermadec Islands
180 km (110 miles) NNE of L'Esperance Rock, Kermadec Islands
1020 km (630 miles) NE of Auckland, New Zealand
1410 km (880 miles) NNE of WELLINGTON, New Zealand
Location Quality Error estimate: horizontal +/- 23.9 km; depth +/- 61.7 km
Location Quality
Parameters
Nst=18, Nph=18, Dmin=2062.4 km, Rmss=1.37 sec, Erho=23.9 km, Erzz=61.7 km, Gp=112.5 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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