海南琼海加积井水位对远大震的同震响应特征研究
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摘要
本文收集整理了2001～2010年海南琼海加积井水位对震中距小于8000km、MS≥7.8的远大震的同震响应资料,统计了水位变化的形态,分析了同震响应水位变化的幅度与震级及井震距的关系,核实了出现水位变化时的地震波震相。结果表明,同震响应形态表现为以阶升为主,无振荡类型的变化;水位的变化幅度与井震距、震级有一定的关系;该井的同震响应表现出一定的方向性;引起同震响应的地震波大多为面波,有一部分为周期较长的S波。
In this study,we analyzed co-seismic responses of water level in the Jiaji well during the strong earthquakes(MS≥7.8) from 2001 to 2010 with the epicentral distance less than 8000km.We counted the co-seismic form of the water level,and analyzed the relationship among the amplitude of water level,the magnitude and the epicentral distance,and then checked the seismic wave phases during the changes of water level.It was shown that:(1) the co-seismic forms of water level mainly represented step-increase with no oscillation;(2) the amplitude of water level had a certain connection with epicentral distance and magnitude;(3) co-seismic responses of Jiaji well showed a certain direction,;(4) the most of co-seismic responses were caused by surface waves,some of which had long period.
In this study,we analyzed co-seismic responses of water level in the Jiaji well during the strong earthquakes(MS≥7.8) from 2001 to 2010 with the epicentral distance less than 8000km.We counted the co-seismic form of the water level,and analyzed the relationship among the amplitude of water level,the magnitude and the epicentral distance,and then checked the seismic wave phases during the changes of water level.It was shown that:(1) the co-seismic forms of water level mainly represented step-increase with no oscillation;(2) the amplitude of water level had a certain connection with epicentral distance and magnitude;(3) co-seismic responses of Jiaji well showed a certain direction,;(4) the most of co-seismic responses were caused by surface waves,some of which had long period.
引文
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付虹、刘强、邬成栋等,2007a,印尼8.7、8.5级远震对云南地区小震的激发和地下流体异常响应初探,地震研究,30(1),8～13。
付虹、邬成栋、刘强等,2007b,印尼巨大地震引起的云南水位异常记录及其意义,地震地质,29(4),873～881。
黄辅琼、迟恭财、徐桂明等,2000,大陆地下流体对台湾南投7.6级地震的响应研究,地震,20(增刊),119～125。
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汪成民、车用太、万迪堃等，1988,地下水微动态研究,81～93,北京:地震出版社。
杨竹转、邓志辉、赵云旭,2005,云南思茅大寨井水位同震阶变的初步研究,地震学报,27(5),569～574。
晏锐、黄辅琼,2009,黄骅井水位对苏门答腊5次地震的同震响应初步研究,中国地震,25(3),8～13。
郑江蓉、徐桂明、李鸿宇等,2005,2004年12月26日印尼8.7级强震后江苏地区同震效应分析,防灾减灾工程学报,25(1),105～113。
Cooper,H H,1965,The Response of Well—Aquifer sy stems to Seismic Waves,J Geophys Res,70(16),3915～3926.
Roeloffs,E A,1998,Persistent water level changes in a well near Parkfield,California,due to local and distant earthquakes,JGeophys Res,103(B1),869～889.
付虹、刘强、邬成栋等,2007a,印尼8.7、8.5级远震对云南地区小震的激发和地下流体异常响应初探,地震研究,30(1),8～13。
付虹、邬成栋、刘强等,2007b,印尼巨大地震引起的云南水位异常记录及其意义,地震地质,29(4),873～881。
黄辅琼、迟恭财、徐桂明等,2000,大陆地下流体对台湾南投7.6级地震的响应研究,地震,20(增刊),119～125。
刘耀炜、杨选辉、刘永铭等,2005,地下流体对苏门答腊8.7级地震的响应特征,见:中国地震局监测预报司,2004年印度尼西亚苏门答腊8.7大地震及其对中国大陆地区的影响,131～258,北京:地震出版社。
舒优良、张世民,2003,周至深井水震波数字化记录与地震波记录的对比分析,地震地磁观测技术与研究,24(5),26～31。
汪成民、车用太、万迪堃等，1988,地下水微动态研究,81～93,北京:地震出版社。
杨竹转、邓志辉、赵云旭,2005,云南思茅大寨井水位同震阶变的初步研究,地震学报,27(5),569～574。
晏锐、黄辅琼,2009,黄骅井水位对苏门答腊5次地震的同震响应初步研究,中国地震,25(3),8～13。
郑江蓉、徐桂明、李鸿宇等,2005,2004年12月26日印尼8.7级强震后江苏地区同震效应分析,防灾减灾工程学报,25(1),105～113。
Cooper,H H,1965,The Response of Well—Aquifer sy stems to Seismic Waves,J Geophys Res,70(16),3915～3926.
Roeloffs,E A,1998,Persistent water level changes in a well near Parkfield,California,due to local and distant earthquakes,JGeophys Res,103(B1),869～889.
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