| 利用GPS高频信号分析玛多地震产生的动态位移特征 |
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| 引用本文： | 张彩红,谭凯,王东振,李瑜,赵斌.利用GPS高频信号分析玛多地震产生的动态位移特征[J].大地测量与地球动力学,2022,42(3):231-233. |
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| 作者姓名： | 张彩红 谭凯 王东振 李瑜 赵斌 |
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| 作者单位： | 中国地震局地震大地测量重点实验室,武汉市洪山侧路40 号,430071,中国地震台网中心,北京市三里河南横街 5 号,100045 |
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| 摘 要： | 为研究玛多地震对周围地表动态位移的影响，利用超长基线模式解算震中距400 km范围内的11个高频GPS观测数据，并对各站水平方向的位移时间序列进行分析。结果表明，玛多地震对震中距最近的青海玛多站的东西向产生约25 cm的位移，并且没有恢复到震前状态；对青海玛沁站和甘肃玛曲站的南北向产生约27 cm的位移，但很快恢复到震前状态；玛多地震对周围各站位移产生的影响，尤其对南北向位移的影响，与站点的方位角有很大的相关性。
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| 关 键 词： | 玛多地震 高频GPS 超长基线 动态位移 |
Analysis on the Features of Dynamic Displacements Caused by Madoi Earthquake Based on GPS High Rate Signal |
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| ZHANG Caihong,TAN Kai,WANG Dongzhen,LI Yu,ZHAO Bin.Analysis on the Features of Dynamic Displacements Caused by Madoi Earthquake Based on GPS High Rate Signal[J].Journal of Geodesy and Geodynamics,2022,42(3):231-233. |
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| Authors: | ZHANG Caihong TAN Kai WANG Dongzhen LI Yu ZHAO Bin |
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| Institution: | (Key Laboratory of Earthquake Geodesy,CEA,40 Hongshance Road,Wuhan 430071,China;China Earthquake Networks Center,5 Nanheng Street,Sanlihe,Beijing 100045,China) |
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| Abstract: | To study the influence of the surrounding surface dynamic displacements caused by Madoi earthquake,using ultra long baseline modewe process 11 high rate GPS observations within 400 km of the epicenter and then analyze the time series of the horizontal displacements.The results indicate that the Madoi earthquake caused a displacement of about 25 cm at QHMD station on the eastward and did not recover to the preseismic status.On the northward,it caused about 27 cm at QHMQ and GSMA stations but recovered to preseismic status quickly.The influence of the earthquake on the dynamic displacements of the surrounding stations,especially on the northward displacement,has a high correlation with the relative azimuth of the stations to the epicenter. |
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| Keywords: | Madoi earthquake high rate GPS ultra-long baseline dynamic displacement |
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