丹江口井网与日本M7.1地震同震响应分析  

Synchronous Response Analysis of the Danjiangkou Well Network to the M7.1 Earthquake in Japan

作　　者：李俊超[1,2] 李金泳 

机构地区：[1]中国地震局地震研究所(地震大地测量重点实验室),湖北 武汉 [2]湖北省地震局(地震预警湖北省重点实验室),湖北 武汉 [3]中铁工程装备集团盾构制造有限公司,河南 郑州

出　　处：《地球科学前沿（汉斯）》2024年第11期1402-1411,共10页Advances in Geosciences

摘　　要：分析了2020年至2024年丹江口井网(雷庄井,唐扒井,盛湾井)水位和水温的观测资料。得到每个资料的动态曲线,总结了2024年8月8日日本九州岛附近海域M4.3地震三口井的响应特征。探讨了出现同震响应的可能原因。结果表明:井网水位变化趋势与水库水位同步,水温较稳定,年平均变化为0.006˚C。对于日本地震同震效应,唐扒井水温在8月8日15时56分至16时08分有一个0.001˚C的阶跃上升变化,井水位在15时51分至16时03分有一个0.015 m的阶跃下降变化,雷庄井、盛湾井未发现明显的同震响应情况。地震发生前三口井未出现破年变现象,对日本M7.1地震预测效能不佳,可能与震中距太远有关。This study analyzes the observational data of water level and water temperature from the Danjiangkou well network (Leizhuang Well, Tangba Well, and Shengwan Well) from 2020 to 2024. Dynamic curves for each dataset were generated, and the response characteristics of the three wells during the M4.3 earthquake near Kyushu, Japan, on August 8, 2024, were summarized. The potential reasons for the synchronous response were explored. The results indicate that the trend of water level changes in the well network is synchronized with the reservoir water level, while the water temperature remains relatively stable, with an annual average change of 0.006˚C. In response to the earthquake, the water temperature in Tangba Well showed a step increase of 0.001˚C from 15:56 to 16:08 on August 8, while the water level decreased by 0.015 m from 15:51 to 16:03. No significant synchronous responses were observed in Leizhuang Well and Shengwan Well. Three wells did not show signs of breakage prior to the earthquake, suggesting that the prediction effectiveness for the M7.1 earthquake in Japan may be poor due to the distance from the epicenter being too far.

关 键 词：丹江口井网 日本地震 同震效应 

分 类 号：P31[天文地球—固体地球物理学]