| 2020-01-19伽师6.4级地震前后视应力变化 |
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| 引用本文： | 郭 寅,刘建明,高 荣.2020-01-19伽师6.4级地震前后视应力变化[J].大地测量与地球动力学,2022,42(10):1063-1066. |
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| 作者姓名： | 郭 寅 刘建明 高 荣 |
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| 摘 要： | 柯坪块体中强地震频发，为获得更多的震情判定依据，利用新疆区域地震台网提供的数字地震学波形资料，计算柯坪块体2010~2020年ML≥3.0地震的视应力值，讨论震源参数的标度关系，并分析柯坪块体5.0级及以上地震和伽师6.4级地震前后视应力的时空变化特征。结果表明，视应力和震级呈正相关关系；柯坪块体5.0级及以上地震前，视应力值在时间和空间上均出现不同程度的高值异常；伽师6.4级地震发生在视应力高值过程中，且震前5个月在震中区出现视应力高值异常。
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| 关 键 词： | 伽师6.4级地震 视应力 柯坪块体 高值异常 时空变化 |
Temporal-Spatial Variations of Apparent Stress before and after the January 19, 2020, Jiashi MS6.4 Earthquake |
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| GUO Yin,LIU Jianming,GAO Rong.Temporal-Spatial Variations of Apparent Stress before and after the January 19, 2020, Jiashi MS6.4 Earthquake[J].Journal of Geodesy and Geodynamics,2022,42(10):1063-1066. |
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| Authors: | GUO Yin LIU Jianming GAO Rong |
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| Abstract: | Moderate to strong earthquakes occur frequently in Keping block. To obtain more judgement basis of earthquakes, based on the earthquake data recorded by Xinjiang Digital Seismic Network, we calculate the apparent stress of ML≥3.0 earthquakes occurred in Keping block from 2010 to 2020. We discuss the scaling relationship of source parameters and analyze the temporal-spatial variations characteristics of apparent stress before and after M≥5.0 earthquakes and Jiashi MS6.4 earthquake. The results show that the apparent stress is positively correlated with magnitude. The apparent stress values show different degrees of temporal and spatial high anomalies before M≥5.0 earthquakes in Keping block. The Jiashi MS6.4 earthquake occurred in the process of high apparent stress, there was an abnormal area of high apparent stress in the epicenter area five months before the earthquake. |
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| Keywords: | Jiashi MS6 4 earthquake apparent stress Keping block high value anomaly temporal- spatial variations |
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