摘要
根据“中国大陆构造环境监测网络”基准站2011~2020年的连续观测资料,对新疆境内天山中段、南天山西段和西昆仑的47条GPS基线时间序列变化进行分析,讨论这些基线的趋势性变化运动特征,总结2016年11月25日阿克陶M_(S)6.7地震、2016年12月8日呼图壁M_(S)6.2地震、2017年8月9日精河M_(S)6.6地震和2020年1月19日伽师M_(S)6.4地震震中300 km范围内不同方向的GPS基线时间序列的异常变化特征和周边构造活动情况,通过对GPS基线异常特征变化的差异性分析,初步得出结论:地震前后基线变化的幅度和趋势跟地震的破裂方向有一定的关系。或许可为新疆未来M_(S)≥6.0强震可能发生地点提供一定的依据。
Based on the continuous observation data of“China Continental Tectonic Environment Monitoring Network”reference station from 2011 to 2020,the changes of 47 GPS baseline time series in the middle Tianshan Mountains,the western Southern Tianshan Mountains and the Western Kunlun Mountains in Xinjiang were analyzed,and the trend movement characteristics of these baselines were discussed.The epicenter of Aktao M_(S)6.7 earthquake on November 25,2016,Hutubi M_(S)6.2 earthquake on December 8,2016,Jinghe M_(S)6.6 earthquake on August 9,2017 and Jiashi M_(S)6.4 earthquake on January 19,2020 were summarized.The anomaly variation characteristics of GPS baseline time series in different directions and the surrounding tectonic activities within 300 km range were analyzed,and a preliminary conclusion was drawn that the amplitude and trend of baseline change before and after the earthquake were related to the earthquake rupture direction to a certain extent.It may provide some basis for the possible location of M_(S)≥6.0 strong earthquakes in Xinjiang in the future.
作者
丁宇
李桂荣
朱治国
李瑞
苏力坦·玉散
李杰
刘代芹
杨磊
赵磊
孙小旭
塔依尔·喀哈尔
DING Yu;LI Gui-rong;ZHU Zhi-guo;LI Rui;Sulitan Yusan;LI Jie;LIU Dai-qin;YANG Lei;ZHAO Lei;SUN Xiao-xu;Tael Khahar(Earthquake Agency of Xinjiang Uygur Autonomous Region,Urumqi 830011,Xinjiang,China)
出处
《内陆地震》
2022年第1期33-41,共9页
Inland Earthquake
基金
2020年自治区创新环境(人才、基地)建设专项—自然科学计划(自然科学基金)(2020D01A85)
中国地震局三结合课题(3JH-202002024)
新疆天山青年计划(杰出青年、优秀青年)基金项目(2017Q010、2017Q064)
中科院战略性先导科技专项(XDB18020201)
新疆地震局科技创新团队计划(XJDZCXTD2020-1)
新疆地震科学基金(201913).
关键词
新疆M_(S)≥6.0地震
基线时间序列特征
异常变化特征
Xinjiang M_(S)≥6.0 earthquakes
Characteristics of baseline time series
Anomaly variation characteristics
