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首页> 外文期刊>Seismological research letters >Seismotectonics of the 2016 M 6.2 Hutubi Earthquake: Implications for the 1906 M 7.7 Manas Earthquake in the Northern Tian Shan Belt, China
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Seismotectonics of the 2016 M 6.2 Hutubi Earthquake: Implications for the 1906 M 7.7 Manas Earthquake in the Northern Tian Shan Belt, China

机译：2016 M 6.2 Hutubi Argeque的地震型学 - 中国北部北山腰带1906米7.7玛纳斯地震的影响

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摘要

The Hutubi earthquake, which occurred on 8 December 2016 with a moment magnitude of M 6.2, was a pure thrust event in the northern Tian Shan belt. By examining the location of the hypocenter, focal mechanism, regional geology, and artificial seismic reflection profiles, we are able to reveal the structural and sedimentary framework of a section of the northern Tian Shan through seismic interpretation. Our study indicates that the seismogenic fault responsible for the M 6.2 Hutubi earthquake is a thrust fault with a low dip angle of 22° at a depth of ~16 km. It has a ramp-flat-ramp geometry and is connected to the active Huoerguosi-Manas-Tugulu fault (F3) at the surface. Accumulated total stratigraphie offset at fault F3 is ~5.8 km with a fault shortening of ~5.4 km. This gives a shortening rate of ~0.9 mm/yr between the Qigu and Tugulu anticlines during the Late Cenozoic. Based on regional study of the fault plane, fault F3 is capable of producing earthquakes of M_w ≥ 8.0. This study suggests that fault F3 was the seismogenic fault responsible for the 2016 M 6.2 Hutubi earthquake and the 1906 M7.7 Manas historical earthquake. The active fault system in the northern Tian Shan belt was involved in fault-related folding during the Late Cenozoic and therefore poses a potential seismic hazard in the study area.
机译：Hutubi地震，2016年12月8日发生的瞬间大幅度为M 6.2，是田山北部的纯粹的推力事件。通过审查低速度，焦点机制，区域地质和人工地地质反射概况的位置，我们能够通过地震解释揭示北山北部一段的结构和沉积框架。我们的研究表明，负责M 6.2 Hutubi地震的发震断层是一个低倾角为22°的推力故障，深度为约16公里。它具有斜坡平稳的几何形状，在表面连接到活性Huoerguosi-Manas-Tugulu故障（F3）。故障F3的累计总Stratigraphie偏移量〜5.8公里，故障缩短约~5.4公里。在新生代期间，这在QIGU和Tugulu ithernines之间缩短了〜0.9毫米/年的缩短速率。基于对断层平面的区域研究，故障F3能够生产M_W≥8.0的地震。该研究表明，故障F3是对2016年河浦地震和1906 M7.7玛纳斯历史地震负责的发震断层。北部山区的主动故障系统在新生代晚期涉及与故障相关的折叠，因此在研究区造成潜在地震危险。

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