安图M3.7及柳树M4.3地震前后YRY-4钻孔应变观测曲线异常形态
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摘要
YRY-4钻孔应变观测作为一种重要的前兆观测手段,能有效地记录地震前后地应力应变变化。吉林安图境内M3.7级地震前后及辽宁营口柳树M4.3级地震前,吉林省敦化台及辽宁省营口台YRY-4钻孔应变观测分别观测到曲线异常。经对比分析,敦化台观测曲线异常形态为:异常-走平-发震-震后阶跃;营口地震台观测曲线异常形态为:异常-返回-发震。两次异常虽然形态各异,但提供了丰富的前兆信息,具有较好的时效性。
YRY-4 borehole strain observation,an important precursor method,can effectively record stress and strain changes before and after earthquakes.Before and after the M3.7 level earthquake in Antu of Jilin,and before M4.3 earthquake in Liushu of Yingkou,Liaoning,the YRY-4 borehole strains observed by the Dunhua Station of Jilin and Yingkou Station of Liaoning Province were separately shown in abnormal curves.Through comparative analysis,the abnormal curved morphology of Dunhua Station seismograph is: abnormal-going flat-earthquakepost earthquake steps;while the abnormal curved morphology in Yingkou Station seismograph is: abnormal-going back-earthquake.Although they are different,the fact still provided rich precursory information,which is significant for prediction in time on impending earthquake.
YRY-4 borehole strain observation,an important precursor method,can effectively record stress and strain changes before and after earthquakes.Before and after the M3.7 level earthquake in Antu of Jilin,and before M4.3 earthquake in Liushu of Yingkou,Liaoning,the YRY-4 borehole strains observed by the Dunhua Station of Jilin and Yingkou Station of Liaoning Province were separately shown in abnormal curves.Through comparative analysis,the abnormal curved morphology of Dunhua Station seismograph is: abnormal-going flat-earthquakepost earthquake steps;while the abnormal curved morphology in Yingkou Station seismograph is: abnormal-going back-earthquake.Although they are different,the fact still provided rich precursory information,which is significant for prediction in time on impending earthquake.
引文
[1]池顺良.钻孔应变观测及深井高频地震学:突破地震预报的希望[J].地球物理学进展,2007,22(4):1164-1170.CHI Shun-liang.Deep-hole broad-band strain-seismograph and high-frequency seismology:the hope to successful earthquake prediction[J].Progress in Geophysics,2007,22(4):1164-1170.
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[6]鞠楠,任云生,王超,等.吉林敦化大石河钼矿床成因与辉钼矿Re-Os同位素测年[J].世界地质,2012,31(1):68-76.JU Nan,REN Yun-sheng,WANG Chao,et al.Ore genesis and molybdenite Re-Os dating of Dashihe molybdenum deposit in Dunhua,Jilin[J].Global Geology,2012,31(1):68-76.
[7]苏恺之.地应变观测曲线的物理解释.钻孔地应变观测新进展[M].北京:地震出版社,2003:132-153.SU Kai-zhi.The physical interpretation of strain observation curve.The new progress of strain observation in drill hole[M].Beijing:Earthquake Press,2003:132-153.
[8]苏恺之,张钧,李秀环,等.钻孔环境在钻孔地形变观测中的作用[J].地震地磁观测与研究,2005,26(6):46-55.SU Kai-zhi,ZHANG Jun,LI Xiu-huan,et al.The effect of borehole environment at borehole deformation observation[J].Seismological and Geomagnetic Observation and Research,2005,26(6):46-55.
[9]毕永强,朴杰,姜城,等.敦化台YRY-4钻孔应变日常观测及异常时段数据处理[J].科技资讯,2011,(26):3-5.BI Yong-qiang,PIAO Jie,JIANG Cheng,et al.The daily observation and data processing in abnormal periods of Dunhua Station YRY-4 borehole strain[J].Science&Technology Information,2011(26):3-5.
[10]池顺良.日本9级大震前我国钻孔应变网测到两起地块强烈受压事件[J].地球物理学进展,2011,26(5):1583-1587.CHI Shun-liang.China's borehole strainmeter network observed two cases of strong compression on land block before Japan's Tokai M9.0 Mega-quake[J].Progress in Geophysics,2011,26(5):1583-1587.
[11]杨绍富,徐长银,李德成,等.日本9.0级地震对新疆钻孔应变的影响分析[J].地震地磁观测与研究,2012,33(5):221-224.YANG Shao-fu,XU Chang-yin,LI De-cheng,et al.Analysis on the influence of Japan M9.0 earthquake to the borehole strain of Xinjiang[J].Seismological and Geomagnetic Observation and Research,2012,33(5):221-224.
[12]马瑾,SHERMAN S I,郭彦双.地震前亚失稳应力状态的识别:以5°拐折断层变形温度场演化的实验为例[J].中国科学:地球科学,2012,42(5):633-645.MA Jin,SHERMAN S I,GUO Yan-shuang.Identification of meta-instable stress state based on experimental study of evolution of the temperature field during stick:slip instability on a 5°bending fault[J].Scientia Sinica(Terrae),2012,42(5):633-645.
[13]池顺良.日本东海9级地震前中国东北地应力压缩曲线和岩石压裂实验一致![DB/OL]//[2012-12-26 ].http://blog.sciencenet.cn/home.php?mod=space&uid=51667&do=blog&id=581481CHI Shun-liang.Before Japan Tokai earthquake,the stress compression curves and rock fracturing experiments are consistent in Northeast China[DB/OL][2012-12-26].http://blog.sciencenet.cn/home.php?mod=space&uid=51667&do=blog&id=581481
[14]汪建宇,刘志宏,李绪俊,等.吉林海沟金矿的构造应力场分析与变形期次[J].世界地质,2011,30 (4):593-599.WANG Jian-yu,LIU Zhi-hong,LI Xu-jun,et al.Analysis on structural stress field and deformation stages in Haigou gold deposit of Jilin[J].Global Geology,2011,30(4):593-599.
[15]池顺良,池毅,邓涛,等.从5.12汶川地震前后分量应变仪观测到的应变异常看建设密集应变观测网络的必要性[J].国际地震动态,2009(1):1-13.CHI Shun-liang,CHI Yi,DENG Tao,et al.The necessity of building national strain-observation network from the strain abnormality before Wenchuan earthquake[J].Recent Developments in Word Seismology,2009(1):1-13.
[2]邱泽华,张宝红,池顺良,等.汶川地震前姑咱台观测的异常应变变化[J].中国科学D辑:地球科学版,2010,40(8):1031-1039.QIU Ze-hua,ZHANG Bao-hong,CHI Shun-liang,et al.The observation of strain change before Wenchuan earthquake[J].Science in China(Ser.D):Earth Sciences,2010,40(8):1031-1039.
[3]雷建设,赵大鹏,苏金蓉,等.龙门山断裂带地壳精细结构与汶川地震发震机理[J].地球物理学报,2009,52(2):339-345.LEI Jian-she,ZHAO Da-peng,SU Jin-rong,et al.Fine seismic structure under the Longmenshan fault zone and the mechanism of the large Wenchuan earthquake[J].Chinese Journal of Geophysics,2009,52(2):339-345.
[4]牛安福,张凌空,闫伟,等.中国钻孔应变观测能力及在地震预报中的应用[J].大地测量与地球动力学,2011,31(2):48-52.NIU An-fu,ZHANG Ling-kong,YAN Wei,et al.Borehole strain measurement and application to earthquake prediction in China[J].Journal of Geodesy and Geodynamics,2011,31(2):48-52.
[5]汪志刚,牛继辉,朱文丰.吉林安图海沟金矿成矿流体特征及成矿机制[J].世界地质,2011,30(3):313-322.WANG Zhi-gang,NIU Ji-hui,ZHU Wen-feng.Oreforming fluid characteristics and metallogenic mechanism of Haigou gold deposit in Antu of Jilin[J].Global Geology,2011,30(3):313-322.
[6]鞠楠,任云生,王超,等.吉林敦化大石河钼矿床成因与辉钼矿Re-Os同位素测年[J].世界地质,2012,31(1):68-76.JU Nan,REN Yun-sheng,WANG Chao,et al.Ore genesis and molybdenite Re-Os dating of Dashihe molybdenum deposit in Dunhua,Jilin[J].Global Geology,2012,31(1):68-76.
[7]苏恺之.地应变观测曲线的物理解释.钻孔地应变观测新进展[M].北京:地震出版社,2003:132-153.SU Kai-zhi.The physical interpretation of strain observation curve.The new progress of strain observation in drill hole[M].Beijing:Earthquake Press,2003:132-153.
[8]苏恺之,张钧,李秀环,等.钻孔环境在钻孔地形变观测中的作用[J].地震地磁观测与研究,2005,26(6):46-55.SU Kai-zhi,ZHANG Jun,LI Xiu-huan,et al.The effect of borehole environment at borehole deformation observation[J].Seismological and Geomagnetic Observation and Research,2005,26(6):46-55.
[9]毕永强,朴杰,姜城,等.敦化台YRY-4钻孔应变日常观测及异常时段数据处理[J].科技资讯,2011,(26):3-5.BI Yong-qiang,PIAO Jie,JIANG Cheng,et al.The daily observation and data processing in abnormal periods of Dunhua Station YRY-4 borehole strain[J].Science&Technology Information,2011(26):3-5.
[10]池顺良.日本9级大震前我国钻孔应变网测到两起地块强烈受压事件[J].地球物理学进展,2011,26(5):1583-1587.CHI Shun-liang.China's borehole strainmeter network observed two cases of strong compression on land block before Japan's Tokai M9.0 Mega-quake[J].Progress in Geophysics,2011,26(5):1583-1587.
[11]杨绍富,徐长银,李德成,等.日本9.0级地震对新疆钻孔应变的影响分析[J].地震地磁观测与研究,2012,33(5):221-224.YANG Shao-fu,XU Chang-yin,LI De-cheng,et al.Analysis on the influence of Japan M9.0 earthquake to the borehole strain of Xinjiang[J].Seismological and Geomagnetic Observation and Research,2012,33(5):221-224.
[12]马瑾,SHERMAN S I,郭彦双.地震前亚失稳应力状态的识别:以5°拐折断层变形温度场演化的实验为例[J].中国科学:地球科学,2012,42(5):633-645.MA Jin,SHERMAN S I,GUO Yan-shuang.Identification of meta-instable stress state based on experimental study of evolution of the temperature field during stick:slip instability on a 5°bending fault[J].Scientia Sinica(Terrae),2012,42(5):633-645.
[13]池顺良.日本东海9级地震前中国东北地应力压缩曲线和岩石压裂实验一致![DB/OL]//[2012-12-26 ].http://blog.sciencenet.cn/home.php?mod=space&uid=51667&do=blog&id=581481CHI Shun-liang.Before Japan Tokai earthquake,the stress compression curves and rock fracturing experiments are consistent in Northeast China[DB/OL][2012-12-26].http://blog.sciencenet.cn/home.php?mod=space&uid=51667&do=blog&id=581481
[14]汪建宇,刘志宏,李绪俊,等.吉林海沟金矿的构造应力场分析与变形期次[J].世界地质,2011,30 (4):593-599.WANG Jian-yu,LIU Zhi-hong,LI Xu-jun,et al.Analysis on structural stress field and deformation stages in Haigou gold deposit of Jilin[J].Global Geology,2011,30(4):593-599.
[15]池顺良,池毅,邓涛,等.从5.12汶川地震前后分量应变仪观测到的应变异常看建设密集应变观测网络的必要性[J].国际地震动态,2009(1):1-13.CHI Shun-liang,CHI Yi,DENG Tao,et al.The necessity of building national strain-observation network from the strain abnormality before Wenchuan earthquake[J].Recent Developments in Word Seismology,2009(1):1-13.
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