新04井水位及水温同震响应特征分析
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摘要
应用新04井自2001年进行数字化改造以后的观测资料,对该井记录到的6次8.0级以上强震引起的同震变化特征进行了分析,得到以下认识:1)新04井对地震的同震响应在形态上,水位均表现为阶变上升,水温则表现为快速上升、快速恢复的突跳型变化。水温表现出的突跳型同震效应是新04井具有冷热两层地下水这种特殊水文地质条件所决定的;2)水位、水温对地震的响应存在明显的差异。无论是出现同震效应的次数还是效应的明显程度上水温都优于水位。表现出新04井水温反应地下应力应变较水位灵敏;3)新04井地下流体同震响应的明显程度与地震震级有明显的相关性。
Based on the Xin-04 well observation data since digitized transformation in 2001,the characteristics of coseismic variation caused by 6 strong earthquakes with magnitudes over 8.0 is analyzed.Some understandings are summarized as following: 1) The coseismic response shapes of water level and temperature of the Xin-04 well are different,the water level showing as stepping increase while water temperature behaving as sudden jump variation with a rapid increase and rapid recovery process.This sudden jump variation of the water temperature is determined by the special hydrogeology conditions that the Xin-04 well has two layers of cool and hot underground water.2) The response of water level and temperature to earthquakes exists obvious difference.The water temperature is always better than the water level both in the appearance times and changing degrees of coseismic response,indicating that water temperature is more sensitive to underground stress and strain than water level.3) The changing degrees of coseismic response of the Xin-04 are well correlated with the earthquake magnitudes.
Based on the Xin-04 well observation data since digitized transformation in 2001,the characteristics of coseismic variation caused by 6 strong earthquakes with magnitudes over 8.0 is analyzed.Some understandings are summarized as following: 1) The coseismic response shapes of water level and temperature of the Xin-04 well are different,the water level showing as stepping increase while water temperature behaving as sudden jump variation with a rapid increase and rapid recovery process.This sudden jump variation of the water temperature is determined by the special hydrogeology conditions that the Xin-04 well has two layers of cool and hot underground water.2) The response of water level and temperature to earthquakes exists obvious difference.The water temperature is always better than the water level both in the appearance times and changing degrees of coseismic response,indicating that water temperature is more sensitive to underground stress and strain than water level.3) The changing degrees of coseismic response of the Xin-04 are well correlated with the earthquake magnitudes.
引文
[1]杨竹转,邓志辉,陶京玲,等.北京塔院井数字化观测水温的同震效应研究[J].地震学报,2007,29(2):203-213.
[2]蔡祖煌.地震流体地学概论[M].北京:地震出版社,1980.
[3]刘耀炜,杨选辉,刘永铭,等.地下流体对苏门答腊8.7级地震的响应特征[G]∥中国地震局监测预报司.2004年印度尼西亚苏门答腊8.7级大地震及其对中国大陆地区的影响.北京:地震出版社,2005:131-258.
[4]陈大庆,刘耀炜,杨选辉,等.远场大震的水位、水温同震响应及其机理研究[J].地震地质,2007,29(1):121-131.
[5]石耀霖,曹建玲,马丽,等.唐山井水温的同震变化及其物理解释[J].地震学报,2007,29(3):265-273.
[6]杨竹转,邓志辉,刘春国,等.中国大陆井水位与水温动态对汶川MS8.0地震的同震响应特征分析[J].地震地质,2008,30(4):895-905.
[7]鱼金子,车用太,王爱英,等.水震波异常与中期强震危险性关系初探[J].地震,1993(8):30-37.
[2]蔡祖煌.地震流体地学概论[M].北京:地震出版社,1980.
[3]刘耀炜,杨选辉,刘永铭,等.地下流体对苏门答腊8.7级地震的响应特征[G]∥中国地震局监测预报司.2004年印度尼西亚苏门答腊8.7级大地震及其对中国大陆地区的影响.北京:地震出版社,2005:131-258.
[4]陈大庆,刘耀炜,杨选辉,等.远场大震的水位、水温同震响应及其机理研究[J].地震地质,2007,29(1):121-131.
[5]石耀霖,曹建玲,马丽,等.唐山井水温的同震变化及其物理解释[J].地震学报,2007,29(3):265-273.
[6]杨竹转,邓志辉,刘春国,等.中国大陆井水位与水温动态对汶川MS8.0地震的同震响应特征分析[J].地震地质,2008,30(4):895-905.
[7]鱼金子,车用太,王爱英,等.水震波异常与中期强震危险性关系初探[J].地震,1993(8):30-37.
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