SHAKEMAP OF THE YUTIAN,XINJIANG M7.3 EARTHQUAKE ON 12 FEB 2014
SHAKEMAP OF THE YUTIAN,XINJIANG M7.3 EARTHQUAKE ON 12 FEB 2014
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2014年2月12日新疆于田M7.3地震震动图
DOI：
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发表时间：
2015
期刊：
影响因子：
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通讯作者：
Chen Ku
中科院分区：
文献类型：
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作者：
Chen Ku
根据震中地质构造、本次地震震源机制解、中国西部地震动衰减、地震台站资料和局部场地效应等资料，获取了2014年2月12日新疆于田地震后的地震动图。结果表明，玉田地震的最大震动烈度可能达到Ⅸ，震级为Ⅷ和Ⅸ的地区不存在城镇。震动强度Ⅶ的区域约为15000平方公里。阿羌镇和叶依克镇的震动强度可能达到Ⅶ。震烈度Ⅵ约4.3万km2，包括民丰、玉田县、博斯坦、努尔、阿雷勒、营贝格、尼雅、萨尔吾泽克镇等。在靠近烈度Ⅵ区边界的于田和策勒县之间的乡镇，由于土壤剪切波速较低，地震地面运动特别容易放大，震害可能加剧。震中距和田地震台近的是位于破裂方向的且末地震台，而不是和田地震台。这可能是由于这次地震的方向性效应，增加了该地区的震动程度。
Based on geological structure in the epicenter area, focal mechanism solutions of this earthquake,the ground motion attenuation in western China,data of seismic stations and local site effect,Shakemap was acquired after the Yutian,Xinjiang earthquake on 12 February 2014. The results show that maximum shaking intensity may reach Ⅸ for Yutian earthquake,and there are no towns located in the area with shaking intensity Ⅷ and Ⅸ. Area with the shaking intensity Ⅶ is about15 000km2. Shaking intensity of Aqiang and Yeyike town may reach Ⅶ. Area with shaking intensityⅥ is about 43 000km2,which includes Minfeng,Yutian County,Bositan,Nuer,Arele,Yingbage,Niya,Salewuzeke town,etc. In villages and towns between Yutian and Cele County,which are near the boundary of intensity Ⅵ area,earthquake damage may aggravate,because shear wave velocity of the soil in this area is relatively low,and seismic ground motion is peculiarly prone to be amplified.Amplitude limiting phenomenon occurred in the Qiemo seismic station,which is located in the direction of rupture,instead of in Hetian seismic station,to which the epicentral distance is less than that to Qiemo. This may be due to the directivity effect of this earthquake,which increased the level of shaking in this region.