HR: 17:45h
AN: U14A-07    [Abstracts]
TI: Field Survey of the effects of the 26 December 2004 and 28 March 2005 Tsunamis and Earthquakes in Indonesia
AU: * Jaffe, B E
EM: bjaffe@usgs.gov
AF: US Geological Survey Pacific Science Center, 400 Natural Bridges Drive, Santa Cruz, CA 95060
AU: Borrero, J C
EM: jborrero@usc.edu
AF: University of Southern California, Civil Engineering, Los Angeles, CA 90089
AU: Prasetya, G S
EM: gegarprasetya@yahoo.com
AF: P3TISDA- BPPT, Tsunami Research Center/Coastal Dynamic Research Institute, Jl.MH.Thamrin 8, Jakarta, 10340 Indonesia
AU: Dengler, L
EM: lad1@humboldt.edu
AF: Humboldt State University, 1 Harpst Street, Arcata, CA 95221
AU: Gelfenbaum, G
EM: ggelfenbaum@usgs.gov
AF: US Geological Survey, 345 Middlefield Road, Menlo Park, CA 94025
AU: Hidayat, R
EM: netadanfesa@yahoo.co.jp
AF: P3TISDA- BPPT, Tsunami Research Center/Coastal Dynamic Research Institute, Jl.MH.Thamrin 8, Jakarta, 10340 Indonesia
AU: Higman, B
EM: hig314@yahoo.com
AF: University of Washington, Dept of Geology, Seattle, WA 98195
AU: Kingsley, E
EM: enneite@yahoo.com
AF: US Geological Survey, 345 Middlefield Road, Menlo Park, CA 94025
AU: Lukiyanto, L
EM: lukilux@yahoo.com
AF: P3TISDA- BPPT, Tsunami Research Center/Coastal Dynamic Research Institute, Jl.MH.Thamrin 8, Jakarta, 10340 Indonesia
AU: McAdoo, B
EM: brian.mcadoo@erdw.ethz.ch
AF: Vassar College, 124 Raymond Ave, Poughkeepsie, NY 12604
AU: Moore, A
EM: amoore5@kent.edu
AF: Kent State University, Room 228, McGilvrey Hall, Kent, OH 44242
AU: Morton, R
EM: rmorton@usgs.gov
AF: US Geological Survey, 600 4th Street South, St. Petersburg, FL 33701
AU: Peters, R
EM: rpeters@usgs.gov
AF: US Geological Survey Pacific Science Center, 400 Natural Bridges Drive, Santa Cruz, CA 95060
AU: Ruggiero, P
EM: pruggiero@usgs.gov
AF: US Geological Survey, 345 Middlefield Road, Menlo Park, CA 94025
AU: Titov, V
EM: Vasily.Titov@noaa.gov
AF: 10 NOAA Pacific Marine Environmental Laboratory, 7600 Sand Point Way NE, Seattle, WA 98115
AU: Kongko, W
EM: liawid@yahoo.com
AF: P3TISDA- BPPT, Tsunami Research Center/Coastal Dynamic Research Institute, Jl.MH.Thamrin 8, Jakarta, 10340 Indonesia
AU: Kongko, W
EM: liawid@yahoo.com
AF: Indonesian Institute of Science (GEOTEK LIPI), Ji. Sangkuriang, Bandung, 40135 Indonesia
AU: Yulianto, E
EM: ekoy001@yahoo.com
AF: Indonesian Institute of Science (GEOTEK LIPI), Ji. Sangkuriang, Bandung, 40135 Indonesia
AB: The 26 December 2004 Indian Ocean tsunami caused widespread devastation and loss of life throughout the Indian Ocean basin. Fatalities in Indonesia alone totaled greater than 125,000 with more than 35,000 missing and 500,000 displaced. From March 30 to April 26, a team of 17 US and Indonesian scientists conducted a tsunami field survey to collect data to improve the ability to mitigate tsunami hazard in Indonesia and worldwide. Data collected included tsunami water heights, eyewitness reports, nearshore bathymetry, topographic profiles, land level change, and tsunami deposits. Study sites spanned 800 km of coast from Breuh Island north of Banda Aceh to the Batu Islands, and included 20 sites in Aceh Province in Sumatra and on Nias Island, Simeulue Island, and the Banyak Islands. Tsunami heights near the shoreline during the 26 December 2004 event were greater than 15 m along 100s of kilometers of coast. The tsunami did not loose energy rapidly as it inundated land; heights were greater than 10 m at 1500 m inland. Extensive tsunami sand deposits were found. At Kuala Merisi in Aceh Province, tsunami deposits were found from within 100 m of the shoreline to 1800 m inland. As part of the team was mobilizing in Jakarta on 28 March 2005, a magnitude 8.7 earthquake occurred offshore of Nias and Simuelue Islands. This earthquake generated a moderately sized tsunami (maximum heights greater than 3 m) that arrived within 10-15 minutes of the earthquake. Both the 28 March 2005 and the 26 December 2004 earthquakes caused land level changes greater than 2 m. Co-seismic subsidence is resulting in coastal erosion. These data are being used to improve the understanding of tsunamis and to mitigate future disasters. For example, the data allows refinement of tsunami inundation models, which will improve the identification of tsunami hazard zones. Models that utilize the observed relations between tsunami characteristics and sediment deposits are also being developed to increase the ability to interpret paleotsunami deposits, which will aid in determining tsunami risk.
UR: http://walrus.wr.usgs.gov/news/field.html
DE: 1861 Sedimentation (4863)
DE: 4558 Sediment transport (1862)
DE: 4564 Tsunamis and storm surges
DE: 7230 Seismicity and tectonics (1207, 1217, 1240, 1242)
SC: Union [U]
MN: Fall Meeting 2005