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Field Survey of the March 28, 2005 Nias-Simeulue Earthquake and Tsunami |
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| Authors: | Jose C Borrero Brian McAdoo Bruce Jaffe Lori Dengler Guy Gelfenbaum Bretwood Higman Rahman Hidayat Andrew Moore Widjo Kongko Lukijanto Robert Peters Gegar Prasetya Vasily Titov Eko Yulianto |
| Institution: | 1. ASR Limited, Marine Consulting and Research, Raglan, 3225, New Zealand 2. Tsunami Research Center, University of Southern California, Los Angeles, CA, 90089-2531, USA 3. Department of Earth Science and Geography, Vassar College, Poughkeepsie, NY, 12604-0735, USA 4. US Geological Survey, Pacific Sciences Center, Santa Cruz, CA, 95060, USA 5. Department of Geology, Humboldt State University, Arcata, CA, USA 6. Department of Earth Science, University of Washington, Seattle, WA, USA 14. Institute for Sustainability and Peace-United Nations University (UNU-ISP), Shibuya-ku, Tokyo, 150-8925, Japan 7. Coastal Engineering Laboratory-BPPT, Jl. Grafika 2, Yogyakarta, 55281, Indonesia 8. Meguro Laboratory, Institute of Industrial Science, The University of Tokyo, Komaba 4-6-1, Meguro-ku, Tokyo, 153-8505, Japan 9. Department of Geology, Kent State University, Kent, OH, USA 10. New Zealand Institute of Geological and Nuclear Sciences, Lower Hutt, New Zealand 11. NOAA Center for Tsunami Research, 7600 Sand Point Way, Seattle, WA, 98195, USA 12. Joint Institute for the Study of the Atmosphere and Ocean, University of Washington, Seattle, WA, 98195, USA 13. Indonesian Institute of Science, Jakarta, Indonesia |
| Abstract: | On the evening of March 28, 2005 at 11:09?p.m. local time (16:09 UTC), a large earthquake occurred offshore of West Sumatra, Indonesia. With a moment magnitude (M w) of 8.6, the event caused substantial shaking damage and land level changes between Simeulue Island in the north and the Batu Islands in the south. The earthquake also generated a tsunami, which was observed throughout the source region as well as on distant tide gauges. While the tsunami was not as extreme as the tsunami of December 26th, 2004, it did cause significant flooding and damage at some locations. The spatial and temporal proximity of the two events led to a unique set of observational data from the earthquake and tsunami as well as insights relevant to tsunami hazard planning and education efforts. |
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