Multiple seismo-anomalies associated with the M6.1 Ludian earthquake on August 3, 2014

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題名:	Multiple seismo-anomalies associated with the M6.1 Ludian earthquake on August 3, 2014
作者:	劉正彥;Zeng, Xiaoping;Lin, Yunfang;Chen, Weisheng;Bai, Zhiqiang;Liu, Jann-Yenq;Chen, Chieh-Hung
貢獻者:	地球科學學院太空科學與工程學系
關鍵詞:	Earthquake forecast;Electromagnetic field;Groundwater;Radon;Total electron content;Water temperature
日期:	2015-12-15
上傳時間:	2026-04-23 11:05:12 (UTC+8)
出版者:	Elsevier Ltd.;Elsevier Ltd
摘要:	摘要： •7 physical parameters are integrated to examine their earthquake-related anomalies.•Isolated anomalies are eliminated and the common ones are joined via mechanisms.•The lithosphere–atmosphere–ionosphere coupling is applied to earthquake forecasts. Multiple geophysical parameters including groundwater level, water temperature, water radon, crustal deformation, electromagnetic waves and total electron contents (TEC) in the ionosphere, are examined together to investigate pre-earthquake anomalous phenomena associated with the Mw6.1 Ludian earthquake on August 3, 2014. Cross-parameter comparison eliminates anomalies that are detected in one parameter only and examine earthquake-related phenomena in various fields, simultaneously. Retrieved anomalies show that abnormal decreases of water temperature and radon concentration related to anomalous uplift of groundwater levels appeared about 1–8days before the earthquake even without contributions from rain. Significant step-like changes are observed from data recorded by strainmeters on July 31 and are consistent with water-related anomalies in timing. No significant anomalies can be found from electromagnetic data through the preliminary observation. In contrast, TEC appeared positive anomalies 1–3days before the Ludian earthquake. Although causal mechanisms of the TEC anomalies from stressed rocks are not fully understood, multiple-parameter examination can increase credibility of determination regarding pre-earthquake phenomena. 出版者： Elsevier Ltd 出版日期： 2015-12-15 出處： Journal of Asian earth sciences, 2015-12, Vol.114, p.352-361 資源來源： Elsevier ScienceDirect Journals Complete 版權： 2015 Elsevier Ltd 識別號： ISSN: 1367-9120 識別號： EISSN: 1878-5786 識別號： DOI: 10.1016/j.jseaes.2015.04.027
顯示於類別:	[太空科學與工程學系] 期刊論文

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