日本Ms9.0地震前的连续重力观测异常
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摘要
日本Ms9.0地震后,检测了17台(套)gPhone重力仪和成都GS15连续重力观测仪震前3天的观测数据。发现:乌什、郑州台的gPhone重力仪和成都台的GS15重力仪分钟采样在震前3天出现了不明原因的高频异常现象。初步分析表明,成都、乌什在3月9日的日本Ms7.3地震前的16小时产生了纺锤状的隆起现象;郑州台在日本Ms7.3和Ms9.0地震震前出现了明显的柱状异常现象。其异常虽然可以排除热带气旋、人为干扰等因素的影响,但与日本地震的关系以及震前更长时间尺度的异常还有待进一步分析。
After Ms9.0 earthquake in Japan,the data of 17 gPhones and GS15 continuous relative gravimeters 3 days before the huge earthquake were analyzed.It is shown that there were some unknown gravity anomalies of gPhone and GS15 in Wushi,Zhengzhou and Chengdu station.The preliminay analysis shows that the records at Chengdu and Wushi stations had the type of spindle gravity disturbance 16 hours before the Ms7.3 earthquake of Japan in 2011-03-09.And the gravimeter's records in Zhengzhou station had the cylindrical gravity disturbance not only before the Ms7.3 earquake but also the Ms9.0 earquake in Japan.Although the tropical cyclones,the impact of human disturbance and other factor can be ruled out,the relationship between the gravity disturbance and the earthquake in Japan and the data of even more time scale are remained to be further analyzed.
After Ms9.0 earthquake in Japan,the data of 17 gPhones and GS15 continuous relative gravimeters 3 days before the huge earthquake were analyzed.It is shown that there were some unknown gravity anomalies of gPhone and GS15 in Wushi,Zhengzhou and Chengdu station.The preliminay analysis shows that the records at Chengdu and Wushi stations had the type of spindle gravity disturbance 16 hours before the Ms7.3 earthquake of Japan in 2011-03-09.And the gravimeter's records in Zhengzhou station had the cylindrical gravity disturbance not only before the Ms7.3 earquake but also the Ms9.0 earquake in Japan.Although the tropical cyclones,the impact of human disturbance and other factor can be ruled out,the relationship between the gravity disturbance and the earthquake in Japan and the data of even more time scale are remained to be further analyzed.
引文
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2胡小刚,郝晓光.汶川大地震宽带地震仪短临异常及成因初探[J].地球物理学报,2008,31(6):1 726-1 734.(HuXiaogang and Hao Xiaoguang.The short-term anomalies de-tected by broadband seismographs before the May 12 Wen-chuan earthquake,Sichuan,China[J].Chinese Journal ofGeophysics,2008,51(6):1 726-1 734)
3郝晓光,胡小刚,许厚泽.汶川大地震前的重力扰动[J].大地测量与地球动力学,2008,(3):129-131.(Hao Xi-aoguang,Hu Xiaogang and Xu Houze.Gravity disturbancebefore wenchuanMs8.0 earthquake[J].Journal of Geodesyand Geodynamics,2008,(3):129-131)
4郝晓光,胡小刚.宽带地震仪资料证实汶川大地震“震前重力扰动”[J].地球动力学进展,2008,23(4):1 332-1 336.(Hao Xiaoguang and Hu Xiaogang.Disturbance be-fore the Wenchuan earthquake detected by broadband seis-mometer[J].Progress in Geophysics,2008,23(4):1 332-1336)
5胡小刚,郝晓光.2009年3月19日Mw7.6汤加大地震的“震前扰动”现象[J].地球物理学进展,2009,24(2):866-870.(Hu Xiaogang and Hao Xiaoguang.Observation offore-seismic disturbance of the 2009/03/19Mw7.6 Tongaearthquake[J].Progress in Geophys,2009,24(2):866-870)
6胡小刚,薛秀秀,郝晓光.IRIS台网地震资料出现2010年1月12日海地大地震“震前扰动现象”[J].地球物理学进展,2010,25(1):134-136.(Hu Xianggang,Xue Xiuxiuand Hao Xiaoguang.Observation of microseism in IRIS re-cords before the 2010-01-02 Haiti earthquake[J].Progressin Geophys,2010,25(1):134-136)
7韦进,等.汶川地震前成都台重力的高频扰动[J].大地测量与地球动力学,2009,(增1):15-19.(Wei Jin,et al.Gravity disturbance of high frequcncy at Chengdu seismosta-tion before wenchuanMs8.0 earthquake[J].Journal of Ge-odesy and Geodynamics,2009,(Supp.1):15-19)
8胡小刚,郝晓光.强台风对汶川大地震和昆仑山大地震“震前扰动”影响的分析[J].地球物理学报,2009,52(5):1 363-1 375.(Hao Xiaoguang and Hu Xiaogang.Ananalysis of the influences of typhoon on anomalous tremorsbefore the great Wenchuan and Kunlunshan earthquakes[J].Chinese Journal of Geophysics,2009,52(5):1 363-1 375)
9郝晓光,胡小刚.汶川大地震“震前扰动”存在“第三类脉动”吗?[J].地球物理学进展,2009,24(4):1 213-1215.(Hao Xiaoguang and Hu Xiaogang.Are“third micro-seisms”in anomalous tremor before the great Wenchuanearthquake?[J].Progress in Geophys,2009,2009,24(4):1 213-1 215)
10 Riccardi U,et al.Comparison of the Micro-g LaCostegPhone-045 spring gravimeter and the GWR-C026 su-perconducting gravimeter in Strasbourg using a 300-daytime series[J].Metrologia,2011,22(2):1-12.
11刘子维,等.gPhone重力仪数据采集系统性能的改进[J].大地测量与地球动力学,2010,(增2):102-104.(Liu Ziwei,et al.Improvement in performance of data ac-quisition system of gPhone gravity meters[J].Journal ofGeodesy and Geodynamics,2010,(Supp.2):102-104)
12张雁滨,等.热带气旋引起的震颤波[J].地球物理学进展,2010,53(2):335-341.(Zhang Yanbing,et al.Thetropic cyclone aroused the tremor[J].Progress in geophys-ics,2010,53(2):335-341)
13 http://weather.unisys.com/hurricane/
2胡小刚,郝晓光.汶川大地震宽带地震仪短临异常及成因初探[J].地球物理学报,2008,31(6):1 726-1 734.(HuXiaogang and Hao Xiaoguang.The short-term anomalies de-tected by broadband seismographs before the May 12 Wen-chuan earthquake,Sichuan,China[J].Chinese Journal ofGeophysics,2008,51(6):1 726-1 734)
3郝晓光,胡小刚,许厚泽.汶川大地震前的重力扰动[J].大地测量与地球动力学,2008,(3):129-131.(Hao Xi-aoguang,Hu Xiaogang and Xu Houze.Gravity disturbancebefore wenchuanMs8.0 earthquake[J].Journal of Geodesyand Geodynamics,2008,(3):129-131)
4郝晓光,胡小刚.宽带地震仪资料证实汶川大地震“震前重力扰动”[J].地球动力学进展,2008,23(4):1 332-1 336.(Hao Xiaoguang and Hu Xiaogang.Disturbance be-fore the Wenchuan earthquake detected by broadband seis-mometer[J].Progress in Geophysics,2008,23(4):1 332-1336)
5胡小刚,郝晓光.2009年3月19日Mw7.6汤加大地震的“震前扰动”现象[J].地球物理学进展,2009,24(2):866-870.(Hu Xiaogang and Hao Xiaoguang.Observation offore-seismic disturbance of the 2009/03/19Mw7.6 Tongaearthquake[J].Progress in Geophys,2009,24(2):866-870)
6胡小刚,薛秀秀,郝晓光.IRIS台网地震资料出现2010年1月12日海地大地震“震前扰动现象”[J].地球物理学进展,2010,25(1):134-136.(Hu Xianggang,Xue Xiuxiuand Hao Xiaoguang.Observation of microseism in IRIS re-cords before the 2010-01-02 Haiti earthquake[J].Progressin Geophys,2010,25(1):134-136)
7韦进,等.汶川地震前成都台重力的高频扰动[J].大地测量与地球动力学,2009,(增1):15-19.(Wei Jin,et al.Gravity disturbance of high frequcncy at Chengdu seismosta-tion before wenchuanMs8.0 earthquake[J].Journal of Ge-odesy and Geodynamics,2009,(Supp.1):15-19)
8胡小刚,郝晓光.强台风对汶川大地震和昆仑山大地震“震前扰动”影响的分析[J].地球物理学报,2009,52(5):1 363-1 375.(Hao Xiaoguang and Hu Xiaogang.Ananalysis of the influences of typhoon on anomalous tremorsbefore the great Wenchuan and Kunlunshan earthquakes[J].Chinese Journal of Geophysics,2009,52(5):1 363-1 375)
9郝晓光,胡小刚.汶川大地震“震前扰动”存在“第三类脉动”吗?[J].地球物理学进展,2009,24(4):1 213-1215.(Hao Xiaoguang and Hu Xiaogang.Are“third micro-seisms”in anomalous tremor before the great Wenchuanearthquake?[J].Progress in Geophys,2009,2009,24(4):1 213-1 215)
10 Riccardi U,et al.Comparison of the Micro-g LaCostegPhone-045 spring gravimeter and the GWR-C026 su-perconducting gravimeter in Strasbourg using a 300-daytime series[J].Metrologia,2011,22(2):1-12.
11刘子维,等.gPhone重力仪数据采集系统性能的改进[J].大地测量与地球动力学,2010,(增2):102-104.(Liu Ziwei,et al.Improvement in performance of data ac-quisition system of gPhone gravity meters[J].Journal ofGeodesy and Geodynamics,2010,(Supp.2):102-104)
12张雁滨,等.热带气旋引起的震颤波[J].地球物理学进展,2010,53(2):335-341.(Zhang Yanbing,et al.Thetropic cyclone aroused the tremor[J].Progress in geophys-ics,2010,53(2):335-341)
13 http://weather.unisys.com/hurricane/
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