7级以上强震前水温月超差个数异常分析
|
摘要
选取近年来中国大陆及周边3次7级以上地震,对周边地震一定范围内"十五"数字化水温台站的月超差个数进行统计分析。结果表明,2010年玉树7.1级地震前,周边700km以内77%的水温台站出现月超差个数的向上突跳异常。2011年缅甸7.2级地震前,未发现此项异常。2013年芦山地震前,周边700 km内仅有13%的水温台站出现此项异常。这3次7级以上地震,震前不同的月超差个数异常特征,应与每次地震不同的发震构造和孕震过程有关。目前,此项异常震例较少,且仅在青藏高原有明显的前兆意义。
In this paper,taking three earthquakes M_S≥7.0 as example,the anomaly of month overproof number of water temperature data recorded by digital stations around the epicenter are analyzed.It is found that the 77%of month overproof number of water temperature showed anomaly with impulse jumps within 700 km from the epicenter before Yushu M_S 7.1 earthquake,2010,however,it seemed that there was-no such anomaly before Burma M_S 7.2earthquake,2012,as well as there were only 13%of month overproof number of water temperature showed such anomaly before Lushan M_S 7.0 earthquake,2013.The anomaly of month overproof number of water temperature data before such three large earthquake should be related to their causative structure and pregnant process.The earthquake cases with such anomaly are not too many,and it is showed that the anomaly of month overproof number of water temperature data has some precursor significance in Qinghai-Tibetan plateau at present.
In this paper,taking three earthquakes M_S≥7.0 as example,the anomaly of month overproof number of water temperature data recorded by digital stations around the epicenter are analyzed.It is found that the 77%of month overproof number of water temperature showed anomaly with impulse jumps within 700 km from the epicenter before Yushu M_S 7.1 earthquake,2010,however,it seemed that there was-no such anomaly before Burma M_S 7.2earthquake,2012,as well as there were only 13%of month overproof number of water temperature showed such anomaly before Lushan M_S 7.0 earthquake,2013.The anomaly of month overproof number of water temperature data before such three large earthquake should be related to their causative structure and pregnant process.The earthquake cases with such anomaly are not too many,and it is showed that the anomaly of month overproof number of water temperature data has some precursor significance in Qinghai-Tibetan plateau at present.
引文
车用太,王基华,林元武,等.张北、尚义地震前的地下流体异常及其跟踪预报[J].地震地质,1998,20(2):99-104.
陈亚红,董春勇,张军,等.2010.荷泽地震前流体中短期异常分析[J].华北地震科学,28(2):37—40.
李纲,刘杰,王博,等.2010年玉树7.1级地震趋势预测研究回顾[J].地震,2011,31(3):64—76.
李滔,马建新,樊春燕,等.玉树地震前的地震下流体观测井温度数据超差异常及其与地震关系研究[J].中国地震,28(3):328—334.
刘云华,单新建,屈春燕,等.青海玉树M_S 7.1地震地表形变场特征研究[J].中国科学·地球科学,2010,40(10):1 310—1 320.
钱晓东,秦嘉政.2011年缅甸7.2级地震及震后云南强震趋势分析[J].华南地震,2011,31(4):40-50.
应丹琳,李忠权,曾庆,等.“4.20”芦山地震与“5.12”汶川地震发震断裂初析[J].成都理工大学学报(自然科学版),201 3,40(3):250—256.
张立.2011年缅甸7.2级地震前云南地下流体异常特征分析[J].地震,2013,33(1):120-126.
陈亚红,董春勇,张军,等.2010.荷泽地震前流体中短期异常分析[J].华北地震科学,28(2):37—40.
李纲,刘杰,王博,等.2010年玉树7.1级地震趋势预测研究回顾[J].地震,2011,31(3):64—76.
李滔,马建新,樊春燕,等.玉树地震前的地震下流体观测井温度数据超差异常及其与地震关系研究[J].中国地震,28(3):328—334.
刘云华,单新建,屈春燕,等.青海玉树M_S 7.1地震地表形变场特征研究[J].中国科学·地球科学,2010,40(10):1 310—1 320.
钱晓东,秦嘉政.2011年缅甸7.2级地震及震后云南强震趋势分析[J].华南地震,2011,31(4):40-50.
应丹琳,李忠权,曾庆,等.“4.20”芦山地震与“5.12”汶川地震发震断裂初析[J].成都理工大学学报(自然科学版),201 3,40(3):250—256.
张立.2011年缅甸7.2级地震前云南地下流体异常特征分析[J].地震,2013,33(1):120-126.
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心