shallow-focus earthquake

The shallow geological tectonic in Tianshui earthquake area

天水地震区浅层地质构造

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In this paper, the formulas of the maximum tidal shear stress and the tidal hydrostatic stress for shallow earthquake are obtained from the tidal stress tensor. the relationship of their phases are discussed.

本文从潮汐应力张量出发，求出浅源地震的日月潮汐最大剪切应力和流体静应力的表达式，讨论了它们位相间的关系。

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Consequently, the quickly uplifted mantle has more trigger action than above-mentioned factors for the occurance of the shallow tectonic earthquake.

因此，地幔快速上涌对构造地震的触发作用应该比上述诸因素更大。

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Active faults are closely related to the shallow tectonic earthquake, the research of active fault is the basic work of the seismotectonic environment and engineering geological evaluation.

活动断裂与浅源构造地震密切相关，活动断裂研究是进行地震构造环境研究和工程地质评价的基础性工作。

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Saturday's earthquake occurred to the northwest of Katmandu at a relatively shallow depth, about nine miles, which caused greater shaking at the surface, but at magnitude 7.8, it released less energy than the 1934 quake.

周六的地震发生在加德满都西北地区，震源相对较浅，约为9英里，所以地表的震动更加强烈。但是由于震级为7.8级，所以释放的能量比1934年的少。

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