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Background and reflections on Dingxi earthquake of July 22, 2013

机译:2013年7月22日定西地震的背景和思考

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摘要

On the morning of July 22, 2013, an earthquake with a magnitude of 6.6 struck Dingxi City in Gansu Province, a mountainous region in northwestern China. The focal mechanism of the earthquake was successive massive rock fracturing at a depth of 20 km at the mountainous junctions of the Minxian and Zhangxian areas (34.5°N, 104.2°E), about 7 km away from the township. According to a geological survey, the epicentral intensity reached 8.0°, an intensity second only to that of the Wenchuan earthquake. This earthquake was strongly felt in the Gansu area of Tianshui, Lanzhou, Longnan, and Baiyin, as well as in the surrounding provinces of Shaanxi and Sichuan. Figure 1 illustrates the general location of the Dingxi earthquake.
机译:2013年7月22日上午,中国西北山区的甘肃省定西市发生了6.6级地震。地震的震源机制是在距乡镇约7公里的the县和张县山区交界处(34.5°N,104.2°E),在20 km的深度处发生了连续的大规模岩石破裂。根据地质调查,震中强度达到8.0°,仅次于汶川地震。在天水,兰州,Long南和白银的甘肃地区以及陕西和四川周边的省份,强烈感受到了地震。图1说明了定西地震的总体位置。

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