Lushan MS7.0 earthquake: A blind reserve-fault eventReport as inadecuate




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Chinese Science Bulletin

, Volume 58, Issue 28–29, pp 3437–3443

First Online: 25 July 2013Received: 22 May 2013Accepted: 24 June 2013DOI: 10.1007-s11434-013-5999-4

Cite this article as: Xu, X., Wen, X., Han, Z. et al. Chin. Sci. Bull. 2013 58: 3437. doi:10.1007-s11434-013-5999-4

Abstract

In the epicenter of the Lushan MS7.0 earthquake there are several imbricate active reverse faults lying from northwest to southeast, namely the Gengda-Longdong, Yanjing-Wulong, Shuangshi-Dachuan and Dayi faults. Emergency field investigations have indicated that no apparent earthquake surface rupture zones were located along these active faults or their adjacent areas. Only brittle compressive ruptures in the cement-covered pavements can be seen in Shuangshi, Taiping, Longxing and Longmen Townships, and these ruptures show that a local crustal shortening occurred in the region during the earthquake. Combining spatial distribution of the relocated aftershocks and focal mechanism solutions, it is inferred that the Lushan earthquake is classified as a typical blind reverse-fault earthquake, and it is advised that the relevant departments should pay great attention to other historically un-ruptured segments along the Longmenshan thrust belt and throughout its adjacent areas.

KeywordsLushan earthquake earthquake surface rupture zone blind reverse-fault earthquake Longmenshan thrust belt Qinghai-Tibetan Plateau This article is published with open access at Springerlink.com

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Author: XiWei Xu - XueZe Wen - ZhuJun Han - GuiHua Chen - ChuanYou Li - WenJun Zheng - ShiMin Zhnag - ZhiQun Ren - Chong Xu - XiB

Source: https://link.springer.com/







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