HR: 0800h
AN: U11A-0826    [Abstracts]
TI: Post Tsunami Survey along the Myanmar Coast due to the December 2004 Sumatra-Andaman Earthquake
AU: * Aung, T
EM: aung-than@aist.go.jp
AF: Geological Survey of Japan, AIST, Higashi 1-1-1, Central 7, Tsukuba, Iba 305-8576 Japan
AU: Satake, K
EM: kenji.satake@aist.go.jp
AF: Geological Survey of Japan, AIST, Higashi 1-1-1, Central 7, Tsukuba, Iba 305-8576 Japan
AU: Okamura, Y
EM: okamura-y@aist.go.jp
AF: Geological Survey of Japan, AIST, Higashi 1-1-1, Central 7, Tsukuba, Iba 305-8576 Japan
AU: Sawai, Y
EM: yuki.sawai@aist.go.jp
AF: Geological Survey of Japan, AIST, Higashi 1-1-1, Central 7, Tsukuba, Iba 305-8576 Japan
AU: Win, K S
EM: nge@teged.eps.nagoya-u.ac.jp
AF: Graduate School of Earth and Environmental Studies, Nagoya University, Nagoya, AIC 464-8602 Japan
AU: Swe, W
EM: dg.dmh@mptmail.net.mm
AF: Myanmar Geoscience Society, Yangon Univesity, Yangon, YGN 11061 Myanmar
AU: Swe, C
EM: dg.dmh@mptmail.net.mm
AF: Yangon Technological University, Insein, Yangon, YGN 11061 Myanmar
AU: Swe, T L
EM: tls@mail4U.com.mm
AF: Yangon Technological University, Insein, Yangon, YGN 11061 Myanmar
AU: Tun, S T
EM: dg.dmh@mptmail.net.mm
AF: Yangon Technological University, Insein, Yangon, YGN 11061 Myanmar
AU: Soe, M M
EM: dg.dmh@mptmail.net.mm
AF: Department of Meteorology and Hydrology, Kabar Aye Pagoda Road, Yangon, YGN 11061 Myanmar
AU: Oo, T Z
EM: dg.dmh@mptmail.net.mm
AF: Department of Meteorology and Hydrology, Kabar Aye Pagoda Road, Yangon, YGN 11061 Myanmar
AU: Zaw, S H
EM: dg.dmh@mptmail.net.mm
AF: Myanmar Engineering Society, Yangon, Yangon, YGN 11061 Myanmar
AB: Post tsunami survey along the Myanmar coast indicates that the maximum tsunami heights from the 2004 Sumatra-Andaman earthquake were less than 3 m and the damage was limited with total number of casualties of 61. Our interviews indicate that nobody felt the earthquake ground shaking around the origin time (07:28 in Myanmar local time). Measurements of tsunami heights, on the basis of eyewitness accounts, debris line and water marker, were made at 22 sites in Ayeyarwaddy Delta and the Taninthayi coast. In Ayeyarwaddy Delta, six measurements indicate that the tsunami heights were between 0.6 and 2.3 m above the sea level at the time of tsunami arrival, which is reported as between 11:00 and 11:45. The casualties were reported as 25 around the delta. Around Dawei, seven measurements indicate the tsunami heights between 0.9 and 2.9 m and arrival times between 10:00 and 14:00. Two measurements around Myeik show that the heights were 0.7 and 2.2 m and the arrival times were 11:00 and 12:00. Around Kawthaung near Thai boarder, seven measurements show the heights between 0.4 and 2.6 m, and the arrival times between 10:30 and 11:45. Much smaller tsunami heights than the neighboring Thai coast, where the tsunami heights were between 5 to 20 m with casualties about 8300, explain relatively less tsunami damage in Myanmar. The reason for the smaller tsunami was probably due to the fact the tsunami source did not extend to Andaman Islands. The tsunami travel times and maximum heights computed from a 700 km long source are basically consistent with the observation. For a nearby tsunami source, the tsunami hazard would be more significant in Myanmar, because coastal houses are unprotected for tsunamis and no infrastructure exists to disseminate tsunami warning information.
DE: 1209 Tectonic deformation (6924)
DE: 4804 Benthic processes, benthos (0408)
DE: 7209 Earthquake dynamics (1242)
DE: 7230 Seismicity and tectonics (1207, 1217, 1240, 1242)
DE: 8036 Paleoseismology (7221)
SC: Union [U]
MN: Fall Meeting 2005