Author:
Shi Peijun,Liu Fenggui,Meng Xingmin,Zhou Qiang,Yu Deyong,Chen Qiong,Liu Lianyou,Fang Weihua,Xiao Cunde,He Chunyang,Ye Tao,Hu Jinpeng,Li Ying
Abstract
AbstractThe Jishishan Ms 6.2 earthquake occurred at 23:59 on December 18, 2023 in Gansu Province, China. We conducted a field survey to assess the hazards and damages caused by the earthquake and its associated geo-activities. Subsequently, we organized a seminar to discuss the possible causes of the destruction of a prehistoric site—Lajia Settlement—dated back to four thousand years B.P. and located only several kilometers away from the epicenter of the Jishishan earthquake. The Jishishan earthquake was unique for its hazard and disaster process, which featured ground shaking and a series of complex geological and geomorphological activities: sediment and soil spray piles, liquefaction, collapse, landslide, and mudflow along water channels. We define this phenomenon as the Jishishan earthquake ripple hazard (JERH). The most recent evidence from the JERH suggests that a prehistoric earthquake similar to the JERH, instead of riverine floods or earthquake-induced landslide dam outburst flood, as previously hypothesized, destroyed the Lajia Settlement.
Funder
Ministry of Science and Technology of the People's Republic of China
National Natural Science Foundation of China
Publisher
Springer Science and Business Media LLC
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