1. 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

2. Information from USGS Magnitude 8.7Magnitude 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°EDate-TimeLocation Depth 30 km (18.6 miles) set by location programDepth Region NORTHERN SUMATRA, INDONESIARegion Location

3. Information from USGS

4. 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

7. 庫倫應力轉移 J. McCloskey et al., 2005, Nature 434, 291 2004 Earthquake Fault 2005 March Earthquake

8. 一般隱沒帶地震海嘯地震 In “International Handbook of Earthquake and Engineering Seismology”, Academic Press, 2002

9. 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.

10. Observed Tsunami < 1 foot

11. 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/ http://www.gl.ntu.edu.tw/ 2005/03/28 蘇門達臘地震 ( 檔案 size: 6.57MB) 2005/03/20 日本福岡縣西方地震 ( 檔案 size: 2.18MB) 2005/03/06 蘇澳地震 ( 檔案 size: 9.75MB) 地震與海嘯 - 生活中的未知與恐懼 ( 檔案 size: 146MB) 2004 年蘇門達臘地震與海嘯 2004 Sumatra Earthquake: Disastrous Tsunami, Neotectonics and Paleoseismology( 檔案 size: 58.66MB) 由海底大地震所引起的海嘯：以蘇門答臘 Sumatra 地震為例 2004/10/15 花蓮外海地震 2004/10/23 日本地震 2004/10/23 台北地震 2004/11/08 花蓮外海地震