震(前)兆远场异常与德令哈6.6级地震临震特征分析
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摘要
简要叙述了 2 0 0 3年 4月 17日发生在青海德令哈 6 6级地震及异常台站概况。采用甘肃省内11个地电台共 6 1个测项 (其中电阻率 2 8个测项、自然电位 2 8个测项、大地电场 5个测项 )及地震活动空间扫描图像 (频度场、b值、GL值 )进行筛选 ,从中检索到了 15项异常指标。经对数据的处理与临震异常特征分析 ,结果表明 :震 (前 )兆异常信息的出现为 6 6级地震事件的发生提供了临震异常判据 ;这些异常判据也可为将来地震的预测预报提供一定的参考依据。
We have studied the Apt. 17, 2003 M S6.6 Delingha, Qinghai earthquake and the seismic abnormality using the data of the geo-electricity recorded in the 11 stations with 61 measure methods (including 28 geo-risistivity methods, 28 potential methods, 5 geo-electric field methods) and of seismicity special distribution (including seismic frequency field, b, GL). We picked out 15 abnormal indexes. The result shows that the long-distance field anomalous information of the geo-risistivity and the seismicity are the characteristic of short term and critical before the M S6.6 event, and they are usfull can apply reliable foundation to the earthquake prediction.
We have studied the Apt. 17, 2003 M S6.6 Delingha, Qinghai earthquake and the seismic abnormality using the data of the geo-electricity recorded in the 11 stations with 61 measure methods (including 28 geo-risistivity methods, 28 potential methods, 5 geo-electric field methods) and of seismicity special distribution (including seismic frequency field, b, GL). We picked out 15 abnormal indexes. The result shows that the long-distance field anomalous information of the geo-risistivity and the seismicity are the characteristic of short term and critical before the M S6.6 event, and they are usfull can apply reliable foundation to the earthquake prediction.
引文
①甘肃省2003年年中震情趋势会商报告,甘肃.兰州,200305,P31～33
②中国地震局分析预报中心,地电场观测技术研究2001
燕明芝,徐辉,白亚平,魏德红2002甘肃地区地电阻率前兆异常信息的映震效果[J].地震地磁观测与研究, 23(5):14～32
②中国地震局分析预报中心,地电场观测技术研究2001
燕明芝,徐辉,白亚平,魏德红2002甘肃地区地电阻率前兆异常信息的映震效果[J].地震地磁观测与研究, 23(5):14～32
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