link to Home Page

Tasmania 8.1
Dec 23, 2004

A great earthquake occurred at 14:59:04 (UTC) on Thursday, December 23, 2004. The magnitude 8.1 event has been located North of MacQuarie Island. (This event has been reviewed by a seismologist.)

Magnitude 8.1 
Date-Time Thursday, December 23, 2004 at 14:59:04 (UTC)
= Coordinated Universal Time 
Friday, December 24, 2004 at 1:59:04 AM 
= local time at epicenter 
Time of Earthquake in other Time Zones 
Location 50.240°S, 160.133°E 
Depth 10 km (6.2 miles) set by location program 
Region NORTH OF MACQUARIE ISLAND 
Distances 
420 km (260 miles) W of Auckland Island, New Zealand
495 km (305 miles) N of Macquarie Island, Australia
1515 km (940 miles) SW of WELLINGTON, New Zealand
1890 km (1170 miles) SSE of CANBERRA, A.C.T., Australia

Location Uncertainty horizontal +/- 12.4 km (7.7 miles); depth fixed by location program 
Parameters Nst=125, Nph=125, Dmin=>999 km, Rmss=1.33 sec, Gp= 25°,
M-type=teleseismic moment magnitude (Mw), Version=8 
Source USGS NEIC (WDCS-D)

Event ID ussjal
Felt Reports Felt throughout Tasmania, Australia and felt in Southland, West Coast and other parts of the South Island, New Zealand.