摘要
根据南天山西段采集的地震波数据并结合多台和达法,通过定量分析2020年1月19日新疆伽师M_(S)6.4地震前后波速比的变化,结果表明:①就空间状态而言,在本次地震发生之前,波速比的区域中有EW走向椭圆状低值异常区,长半轴和短半轴长分别为30 km与20 km。②就时间进程而言,伽师M_(S)6.4地震前无出现波速比低值异常,震前无呈现降低—恢复—平静—发震模式。
Based on the seismic wave data collected in the western section of Southern Tianshan Mountain and combined with the multi-platform and Dawei method,the wave velocity ratio before and after the Jiashi M_(S)6.4 earthquake in Xinjiang on January 19,2020 was quantitatively analyzed.The results show that:①In terms of spatial state,before the earthquake occurred,there was an elliptic low-value anomaly area of EW trend in the region of the wave velocity ratio,and the long and short semi-axis were about 30 km and 20 km,respectively.②In terms of time progression,the low-value anomaly of wave velocity ratio occurred nearly two months before the Jiashi M_(S)6.4 earthquake,and the pattern of decreasing,recovering,calming and generating occurred before the earthquake.
作者
祖丽皮亚·巴克
张琳琳
阿布都热依木江·巴克
海仁沙·司拉木
古丽孜娜提·依德热斯
高朝军
Zulipiya Bake;Zhang Lin-lin;Abudureyimujiang Bake;Hairensha Silamu;Gulizinati Yideresi;Gao Chao-jun(Kashi Earthquake Monitoring Central Station,Kashigar 844000,Xinjiang,China;Earthquake Agency of Xinjiang Uygur Autonomous Region,Urumqi 830011,Xinjiang,China)
出处
《内陆地震》
2023年第4期420-424,共5页
Inland Earthquake
基金
新疆地震青年科学基金(202208).
