Magnitude 8.7 - NORTHERN SUMATRA, INDONESIA

2005 March 28 16:09:36 UTC

Prepared by M.H. Huang, Y. Wang, J.C. Hu, Y.M. Wu

Information from USGS• 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 2.065°N, 97.010°E

• Depth 30 km (18.6 miles) set by location program

• Region NORTHERN SUMATRA, INDONESIA

Location

Information from USGS

Aftershocks M>5 due 28.3.2005 (UTC)

• MAG DATE UTC-TIME LAT LON DEPTH region y/m/d h:m:s deg deg km • 5.5 2005/03/28 23:39:49 2.924 96.340 30.0 SIMEULUE, INDONESIA• 5.7 2005/03/28 23:37:32 2.932 96.338 29.4 SIMEULUE, INDONESIA• 5.7 2005/03/28 23:13:00 0.192 97.016 30.0 NIAS REGION, INDONESIA• 5.2 2005/03/28 20:35:17 1.725 97.092 30.0 NIAS REGION, INDONESIA• 5.2 2005/03/28 20:23:21 0.872 97.694 30.0 NIAS REGION, INDONESIA• 5.0 2005/03/28 20:19:09 4.955 92.316 30.0 OFF THE WEST COAST OF NORTHERN SUMATRA• 5.4 2005/03/28 20:06:26 1.080 97.374 30.0 NIAS REGION, INDONESIA• 5.8 2005/03/28 19:02:20 1.010 97.817 30.0 NIAS REGION, INDONESIA• 5.5 2005/03/28 18:48:53 2.729 95.958 30.0 SIMEULUE, INDONESIA• 6.1 2005/03/28 18:30:44 0.923 97.804 30.0 NIAS REGION, INDONESIA• 5.3 2005/03/28 17:59:47 0.947 97.804 30.0 NIAS REGION, INDONESIA • 6.0 2005/03/28 16:38:43 1.372 97.362 30.0 NIAS REGION, INDONESIA • 8.7 2005/03/28 16:09:36 2.065 97.010 30.0 NORTHERN SUMATRA, INDONESIA • 5.9 2005/03/25 01:04:53 5.499 94.359 39.0 NORTHERN SUMATRA, INDONESIA

庫倫應力轉移

J. McCloskey et al., 2005, Nature 434, 291

2004 Earthquake Fault

2005 March Earthquake

一般隱沒帶地震 海嘯地震

In “International Handbook of Earthquake and Engineering Seismology”, Academic Press, 2002

Tsunami Warning from NOAA• EARTHQUAKE DATA PRELIMINARY MAGNITUDE - 8.5 LOCATION - 2.3N 97.1E - NORTHERN SUMATERA, INDONESIA TIME - 0711 AST 03/28/2005 0811 PST 03/28/2005 1611 UTC 03/28/2005

• THE TSUNAMI HAS BEEN OBSERVED AT THE FOLLOWING SITES GAN 0.7N 73.2E 5CM / 0.16FT MALE 4.2N 73.5E 9CM / 0.3FT HANIMAADHOO 6.8N 73.2E 20CM / 0.66 FT COCOS IS (NO LAT / LON) 23CM / 0.75FT

• EVALUATION BASED ON LOCATION AND MAGNITUDE THE EARTHQUAKE WAS NOT

SUFFICIENT TO GENERATE A TSUNAMI DAMAGING TO CALIFORNIA - OREGON - WASHINGTON - BRITISH COLUMBIA OR ALASKA. SOME AREAS MAY EXPERIENCE SMALL SEA LEVEL CHANGES.

Observed Tsunami < 1 foot

下載地震投影片檔案• 下列地震投影片檔案可至台大地質科學系網頁下載：http://www.gl.ntu.edu.tw/

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