Gravity variations before the Menyuan Ms6.4 earthquake

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• 作者：Weifeng Liang ; ^{lwfbox@163.com" class="auth_mail" title="E-mail the corresponding author}Author Vitae ; Guoqing Zhang ; Yiqing Zhu ; Yunma Xu ; Shusong Guo ; Yunfeng Zhao ; Fang Liu ; Lingqiang Zhao
• 关键词：Mid-eastern of Qilian Mountain ; Gravity changes ; Menyuan Ms6.4 earthquake ; Lenglongling Fault ; Hexi
• 刊名：Geodesy and Geodynamics
• 出版年：2016
• 出版时间：July 2016
• 年：2016
• 卷：7
• 期：4
• 页码：223-229
• 全文大小：3135 K

文摘

In order to study the relationship between gravity variation and Menyuan Ms6.4 earthquake, gravity variation characteristics in mid-eastern of Qilian Mountain were analyzed based on the 2012–2015 relative gravity datasets. The results indicated that the gravity changes in mid-eastern of Qilian Mountain increased gradually, while gravity changes around Menyuan remarkably. Besides, great positive-negative gravity changing gradients appeared along the Lenglongling Fault which was located at the north of Menyuan, and the 2016 Menyuan Ms6.4 earthquake occurred near the junction of positive and negative gravity changes.