| 腾冲台地电场在中强地震前异常特征分析 |
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| 引用本文： | 起卫罗,曹舸斌,曾庆堂.腾冲台地电场在中强地震前异常特征分析[J].四川地震,2019(2):22-26. |
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| 作者姓名： | 起卫罗 曹舸斌 曾庆堂 |
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| 作者单位： | 云南省地震局 |
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| 摘 要： | 将腾冲台地电场2008~2011年观测资料与2008~2011年间云南腾冲及周边地区发生的多次中强地震进行震例对比分析,发现腾冲台地电场观测数据在震前出现了不同程度的异常变化,对这些异常变化进行深入分析总结,寻找规律和变化特征,异常主要表现为短期和临震异常:异常持续时间较短为1~100天,异常结束至发震时间1~80天;长极距异常幅度在11~50 mV之间,短极距异常幅度在7~30 mV之间。异常结束3个月内应注意5级左右地震发生。
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| 关 键 词： | 腾冲台 地电场 中强地震 异常特征 |
Analysis on Precursory Abnormal Characteristics of Geoelectric Field before the Modorately strong Earthquake at Tengchong Station |
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| QI Weiluo,CAO Gebin,ZENG Qingtang.Analysis on Precursory Abnormal Characteristics of Geoelectric Field before the Modorately strong Earthquake at Tengchong Station[J].Earthquake Research in Sichuan,2019(2):22-26. |
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| Authors: | QI Weiluo CAO Gebin ZENG Qingtang |
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| Institution: | (Yunnan Earthquake Agency,Yunnan Kunming 650224,China) |
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| Abstract: | In this paper,the observation data of the geoelectric in field are analyzed,and using the comparative analysis,many strong earthquakes are occurred around Tengchong from 2008 to 2011. These abnormal changes in-depth analysis summary, looking for regularity and variation characteristics,Founding, analysis and summary the abnormal changes in the electric field of Tengchong geoelectrical field before the earthquake. Mainly manifested as short-term and impending earthquake anomalies: the abnormal duration is shorter from 1 day to 100 days. Abend to earthquake time 1 day to 80 days, The long pole anomaly range is between 11 mV and 50 mV, short pole anomaly amplitude between 7 mV and 30 mV. An exception occurred within 3 months in ca/se of the M_L5. Looking for regularity and changing characteristics. In the future, the application of the geoelectrical field observation data to provide important basis for earthquake prediction, especially the short impending prediction. |
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| Keywords: | Tengchong Station geoelectrical field moderate-strong earthquake abnormal characteristics |
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