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Damage Analysis of Dangxiong M_s6.6 and Nimu M_s 6.5 Earthquakes in Tibet

Basang Ciren1), Cao Zhongquan2), Deng Guiying2), Wen Shengliang 2) and De Ji 3) 1) Lhasa Seismic Station, Tibet Municipality, Lhasa 850000, Tibet, China 2) Earthquake Administration of Tibet Municipality, Lhasa 850000, Tibet, China 3) Lhasa Geomagnetism Station, Tibet Municipality, Lhasa 850000, Tibet, China  
There occurred two earthquakes in Tibet in recent years, in which one was at 04:30 p.m. on October 6, 2008 in Dangxioan county of Lhasa city (north latitude 29°48′, east longitude 90°21′) with magnitude 6.6; and the second was at 04:24 p.m. on July 30, 1992 in Nimu county of Lhasa city (north latitude 29°35′, east longitude 90°15′) with magnitude 6.5. Although these two earthquakes belong to the same tectonic unit, and share many similarities in seismic type, magnitude and depth of epicenter the corresponding damage is quite different. Based on the field investigation, we perform a comparison study of the life loss and building damage cased by these two earthquakes. Finally, the possible cause of such different damage is discussed.
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