| 2014年2月12日新疆于田Ms7．3地震序列应力降变化特征的初步研究 |
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| 引用本文： | 夏爱国.2014年2月12日新疆于田Ms7．3地震序列应力降变化特征的初步研究[J].内陆地震,2014(2):138-141. |
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| 作者姓名： | 夏爱国 |
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| 作者单位： | 新疆维吾尔自治区地震局,新疆乌鲁木齐830011 |
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| 摘 要： | 选取距离于田Ms7．3震中最近的于田地震台记录，利用所记录的震源区附近112次ML3．0以上事件的数字波形资料，采用Brune圆盘模型计算了此次地震序列的应力降值，得到该序列的应力降时序变化曲线。经初步分析后认为，于田Ms7．3地震序列的应力降时序变化特征基本符合前主余型地震序列特征。根据目前余震应力降值的发展趋势，估计该序列今后余震的强度会逐渐走低，再次发生中强以上余震的可能性不大。
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| 关 键 词： | 于田地震序列 应力降 Brune圆盘模型 |
PRELIMINARY STUDY ON STRESS DROP VARIATION CHARACTERISTIC OF YUTIAN Ms7.3 EARTHQUAKE ON FEB. 12, 2014, XINJIANG |
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| XIA Ai-guo.PRELIMINARY STUDY ON STRESS DROP VARIATION CHARACTERISTIC OF YUTIAN Ms7.3 EARTHQUAKE ON FEB. 12, 2014, XINJIANG[J].Inland Earthquake,2014(2):138-141. |
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| Authors: | XIA Ai-guo |
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| Institution: | XIA Ai-guo ( Earthquake Administration of Xinjiang Uygur Autonomous Region, Urumqi 830011 , Xinjiang, China) |
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| Abstract: | Yutian earthquake sequence stress drop value was calculated with digital wave data of 112 ML3.0 earthquakes recorded by Yutian seismic station in the focal area of Yutian Ms7. 3 earthquake. The preliminary analysis showed that the stress drop value variation characteristic of Yutian Ms7.3 earthquake accorded with that of mainafter shock type. According to the stress drop value variation trend, the strength of future aftershock of this sequence will decline gradually. |
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| Keywords: | Yutian earthquake sequence Stress drop Brune circular disk model |
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