Magnitude 8.6 + 8.2 EARTHQUAKES STRIKE OFF THE WEST COAST OF NORTHERN SUMATRA

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Earthquake Details

• This event has been reviewed by a seismologist.

Magnitude	8.2
Date-Time	Wednesday, April 11, 2012 at 10:43:09 UTC 12H43 SAST Wednesday, April 11, 2012 at 04:43:09 PM at epicenter
Location	0.773°N, 92.452°E
Depth	16.4 km (10.2 miles)
Region	OFF THE WEST COAST OF NORTHERN SUMATRA
Distances	615 km (382 miles) SSW (211°) from Banda Aceh, Sumatra, Indonesia 1061 km (659 miles) WSW (256°) from KUALA LUMPUR, Malaysia
Location Uncertainty	horizontal +/- 14.2 km (8.8 miles); depth +/- 6.4 km (4.0 miles)
Parameters	NST= 99, Nph=101, Dmin=573.3 km, Rmss=0.95 sec, Gp= 40°, M-type=regional moment magnitude (Mw), Version=7
Source	Magnitude: USGS NEIC (WDCS-D) Location: USGS NEIC (WDCS-D)
Event ID	usc00090da

Earthquake Details

• This event has been reviewed by a seismologist.

Magnitude	8.6
Date-Time	Wednesday, April 11, 2012 at 08:38:37 UTC Wednesday, April 11, 2012 at 02:38:37 PM at epicenter Time of Earthquake in other Time Zones
Location	2.311°N, 93.063°E
Depth	22.9 km (14.2 miles)
Region	OFF THE WEST COAST OF NORTHERN SUMATRA
Distances	434 km (269 miles) SW of Banda Aceh, Sumatra, Indonesia 550 km (341 miles) SW of Lhokseumawe, Sumatra, Indonesia 963 km (598 miles) W of KUALA LUMPUR, Malaysia 1797 km (1116 miles) WNW of JAKARTA, Java, Indonesia
Location Uncertainty	horizontal +/- 13.5 km (8.4 miles); depth +/- 2.6 km (1.6 miles)
Parameters	NST=395, Nph=397, Dmin=514.3 km, Rmss=1.52 sec, Gp= 18°, M-type=(unknown type), Version=B
Source	Magnitude: USGS NEIC (WDCS-D) Location: USGS NEIC (WDCS-D)
Event ID	usc000905e

- USGS