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Free gas is ubiquitous at shallow sediment depths of the continental margins of the worldwide oceans. However, theoretical study of the dynamic behavior of gassy seafloor under the action of earthquake has been rare. In this paper, a theoretical model for the analysis of the horizontal and vertical motion at the surface of a gassy ocean sediment layer induced by SV waves is developed based on the...
The May 12, 2008, Ms 8.0 Wenchuan great earthquake, China caused earthquake damages of 2666 earth dams, these damaged dams are in medium and small scale, located in 8 provinces or municipalities, of which 69 dams were at dam-break risk, and 331 were at high-risk. There were 1996 damaged dams located in Sichuan Province, including all the 69 at dam-break risk and 310 at high-risk. Through a detailed...
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