地震前兆还是降雨干扰?——与“宁强5.7级地震前陕西定点形变的异常现象”作者商榷
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杨小林,男,高级工程师,主要从事地震学方面的工作。E-mail:yang-xiaolin123@163.com

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中国科学院战略先导B类专项(XDB41000000);大地测量与地球动力学国家重点实验室自主项目(S21L6403)


Earthquake precursor or rainfall interference?—Discuss with authors of the paper“Anomaly phenomenon of pointing deformation in Shaanxi Province before Ningqiang MS5.7 earthquake”
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    摘要:

    在宁强MS5.7地震(2008年5月27日)发生前2天,宝鸡台洞体应变NS和EW分量分别记录到了大幅应变异常,有研究认为该异常是宁强地震的短临前兆[1].为客观验证该结论的真伪性,本文采用重复地震检验和统计实证等方法,对该异常进行了较系统的归因分析,结果表明降雨干扰才是主因。

    Abstract:

    Approximately two days prior to the Ningqiang MS5.7 earthquake (May 27,2008), a large amount of cave strain anomalies were recorded in the NS and EW components at Baoji station. A previous study showed that these phenomena were short imminent earthquake precursors of the Ningqiang MS5.7 earthquake[1].By means of repeated earthquake tests and empirical statistics, the attribution of these anomalies was analyzed systematically to objectively verify the authenticity of this conclusion. Results showed that rainfall interference was the main cause of the remarkable strain anomalies.

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杨小林,丁晓光,杨锦玲,危自根.地震前兆还是降雨干扰?——与“宁强5.7级地震前陕西定点形变的异常现象”作者商榷[J].地震工程学报,2023,(1):138-144. YANG Xiaolin, DING Xiaoguang, YANG Jinling, WEI Zigen. Earthquake precursor or rainfall interference?—Discuss with authors of the paper“Anomaly phenomenon of pointing deformation in Shaanxi Province before Ningqiang MS5.7 earthquake”[J]. China Earthquake Engineering Journal,2023,(1):138-144.

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  • 在线发布日期: 2023-01-21