Link to USGS home page
U.S. Geological Survey Home Page Earthquake Hazards Program Home Page National Earthquake Information Center Home Page
         
   HOME | ABOUT US | EQ GLOSSARY | FOR TEACHERS | PRODUCTS & SERVICES | DID YOU FEEL IT? | FAQ | SEARCH   

Earthquake Activity


Magnitude 4.5 SOUTH OF THE FIJI ISLANDS
Tuesday, October 12, 2004 at 20:24:15 UTC

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

World Location

Regional Location

Magnitude 4.5
Date-Time Tuesday, October 12, 2004 at 20:24:15 (UTC) - Coordinated Universal Time
Wednesday, October 13, 2004 at 08:24:15 AM local time at epicenter
Time of Earthquake in other Time Zones
Location 22.19S 176.15W
Depth 293 kilometers
Region SOUTH OF THE FIJI ISLANDS
Reference 150 km (95 miles) SW of NUKU'ALOFA, Tonga
315 km (195 miles) ESE of Ndoi Island, Fiji
455 km (280 miles) SSW of Neiafu, Tonga
1845 km (1150 miles) NNE of Auckland, New Zealand
Location Quality Error estimate: horizontal +/- 32.4 km; depth +/- 109 km
Location Quality
Parameters
Nst=17, Nph=17, Dmin=3897.0 km, Rmss=1.23 sec, Erho=32.4 km, Erzz=108.6 km, Gp=123.5 degrees
Source USGS NEIC (WDCS-D)

Printer Friendly Version

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->

 

First Government graphic