Seismic Mountainous Geo-hazard Investigation of Dongchuan Ms7.8 Earthquake in 1733
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Abstract:
Dongchuan Ms 7.8 earthquake happened on August 2nd, 1733, and the seismic hazards were completely recorded by Cui Naiyong, a local executive officer, in which the data are valuable to the study of secondary mountainous seismic hazards triggered by strike-slip seismic fault. The present paper investigated the secondary seismic hazards in the field based on the guide of the historical materials，the main conclusions were as follows: (1) the secondary mountainous seismic hazards were limited in a narrow zone along the seismic fracture; (2) weak support underground mines of copper were destroyed or seriously damaged, and the wooden building was good in seismic resistance; (3) the landslide failure showed in two different styles: projecting or slowly sliding, depending on the boundary conditions of the landslides or the failure time;(4) slope seismic shattering and loosening was one of the main reasons for the high-frequency debris flow.
Keywords:
Dongchuan Ms 7.8 earthquake ; characteristics of earthquake disasters ; seismic mountainous disasters ; building damage
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Online Published: December 27,2016
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