USGS: Magnitude 8.7 - Northern Sumatra, Indonesia

Magnitude 8.7 - Northern Sumatra, Indonesia
2005 March 28 16:09:36 UTC

Preliminary Earthquake Report

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

A great earthquake occurred at 16:09:36 (UTC) on Monday, March 28, 2005. The magnitude 8.7 event has been located in NORTHERN SUMATRA, INDONESIA. (This event has been reviewed by a seismologist.)

Magnitude
8.7

Date-Time
Monday, March 28, 2005 at 16:09:36 (UTC)
= Coordinated Universal Time
Monday, March 28, 2005 at 11:09:36 PM
= local time at epicenter
Time of Earthquake in other Time Zones

Location
2.076°N, 97.013°E

Depth
30 km (18.6 miles) set by location program

Region
NORTHERN SUMATRA, INDONESIA

Distances

205 km (125 miles) WNW of Sibolga, Sumatra, Indonesia
245 km (155 miles) SW of Medan, Sumatra, Indonesia
535 km (330 miles) WSW of KUALA LUMPUR, Malaysia
1410 km (880 miles) NW of JAKARTA, Java, Indonesia

Location Uncertainty
horizontal +/- 4.8 km (3.0 miles); depth fixed by location program

Parameters
Nst=135, Nph=135, Dmin=537.4 km, Rmss=0.79 sec, Gp= 43°,
M-type=moment magnitude (Mw), Version=7

Source
USGS NEIC (WDCS-D)

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