摘要
收集并分析了首都圈地区水温观测井对2007年9月12日印度尼西亚苏门答腊Ms8.5级大震有响应的4口井水温资料。在此次地震中,北京良乡井和塔院井出现了水温突降—缓升脉冲型同震响应现象,河北三马坊井出现了震后水温缓慢升高的现象,北京昌平井则表现为震后水温阶变下降的现象。针对不同的水温响应现象,总结了前人对其机理的研究成果。水温突降—缓升型的响应机理主要有气体逸出说、井内水体热弥散说和冷水下渗说3种,而观测井水温震后效应是由于地震波作用导致井—含水层系统内水流状态的变化所致。
The water temperature data of four wells, which responded to Sumatra earthquake occurred in Sep 10, 2007, were collected and analyzed. In the earthquake, Temperature of Liangxiang and Tayuan wells in Beijing showed a drop-ascend impulse, and temperature of Sanmafang well showed a slowly increasing after the earthquake, while temperature of Changping well represented as step-drop. There are three mechanisms for temperature sudden drop to slow raise, which are gas escape, heat dispersion and cold water seep. But the postseismic effect was caused by seismic wave.
出处
《华北地震科学》
2008年第1期35-40,共6页
North China Earthquake Sciences
基金
基本科研业务专项资金(ZDJ2007-21)
地震科学联合基金(A07084)
关键词
水温
同震响应
震后效应
机理
苏门答腊
water temperature
co-seismic response
postseismic effect
Sumatra
