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利用福州电磁波观测资料,对给定时段内、范围内的闽台地区地震进行相关分析,找出福州电磁波异常与地震的相关系数,探讨福州电磁波异常信息的映震效能,为今后利用电磁波观测资料异常信息进行临震预报提供科学依据。 相似文献
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单台电磁波异常与地震短临预报的研究 总被引:5,自引:0,他引:5
对河南省濮阳市地震台电磁波的观测资料进行了研究,总结了其异常变化特征。结果表明电磁波观测作为一种地震前兆短临观测项目,在地震短临预报中具有较好的效果 相似文献
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中国地震局监测预报司 《国际地震动态》2009,(7):1-1
为推进地震前兆观测技术和分析预报方法创新,广泛听取各方面对我国地震预报发展的意见和建议,中国地震局监测预报司与中国地震局地球物理研究所、地震预测研究所、中国地震学会电磁专业委员会于2008年11月29—30日在北京联合举办了“地震电磁波前兆观测技术与分析预报方法论坛”。 相似文献
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内蒙古通辽波的映震特征 总被引:1,自引:0,他引:1
分析了内蒙古通辽电磁波的观测资料,发现该观测项目异常与中强地震有明显的对应关系,并有一定的映震规律性。得出利用电磁波似可进行台预报地震的结论。 相似文献
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分析了DWMJ—89A型电磁波记录仪的观测资料及其映震的关系,对用电磁波脉冲异常数值天数预报未来地震强度的方法进行了研究,结果表明电磁脉冲异常数值与地震强度有一定的关系。 相似文献
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MDCB型地震前兆监测仪映震效果分析 总被引:3,自引:1,他引:3
对MDCB-Ⅱ型地震前兆监测仪观测获得的类地应力值,异常频度和8方位异常值等参数进行了比较深入的分析及其与地震关系的研究。资料反映的事实表明,在一定距离,一定强度的地震的短临阶段,确定存在着电磁波异常现象,其动态趋势,变化次数,异常突变和异常方向性反映等参数,可为地震预测预报研究提供科学判据。 相似文献
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介绍了平安台地温,电磁波观测点基本概况以及该点地温与电磁波在2000年6月6日甘肃景泰地震前的短临异常特征,初步探讨了异常形成的机理,认为平安台2种观测手段互初性好,有一定的映震能力,利用其同步异常信息对一定范围内的地震做出一定程度的预报是可能的。 相似文献
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电磁波异常与相关地震的探讨 总被引:2,自引:0,他引:2
在对地震电磁波产生机理基础的分析上,结合近年来观测实践,深入具体的分析了震前电磁波的短临异常与相关地震的对应关系,同时也总结了观测仪器的有效使用与技术改进,从而展示了电磁波预报地震所具有广阔发展前景。 相似文献
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Zhang Ping Zhao Guoze Tang Ji Liu Feng Sun Weihuai Han Bing Wang Lifeng Zhang Li 《中国地震研究》2018,32(2):254-264
This paper summarizes the layout of the Yunnan seismic ELF electromagnetic observation network, site selection, ELF electromagnetic instrument system, data processing and other construction. The principle and method of using the ELF electromagnetic wave technique to monitor and predict earthquakes are expounded. The long term monitoring of ELF electromagnetic fields is carried out in the Yunnan earthquake prone area, and at the same time, the changes in electrical parameters and spatial electromagnetic fields of the regional crustal medium structure are monitored. The functions such as automatic, quasi real time, remote monitoring, network monitoring, data processing specialization, data service, data sharing and industrialization of the ELF electromagnetic observation data have been realized. In order to capture the deep electromagnetic precursory information of the earthquakes, service for earthquake prediction research, which has broad application prospects and development potential. Through the research of the seismicity of Yunnan in the trial run period of the project, the preliminary results of the extreme low frequency electromagnetic observation of the Yunnan earthquake in recent years are given. The electromagnetic precursors and the electromagnetic effects of the Yangbi earthquake are recorded. In the 3-month period before the earthquake, the power spectrum of the electric and magnetic fields, the apparent resistivity and the impedance phase in the observed signals are all abnormal, and gradually increased with time. The maximum value is reached 20 days before the earthquake, and an earthquake occurs when the change is restored to normal. 相似文献
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几次中强地震前电磁波异常的初步分析 总被引:1,自引:0,他引:1
2008年新疆新建轮台、喀什、阿图什3个电磁波观测台站,经过1年多的观测,喀什、阿图什2个台站资料较为连续、可靠。台站400 km范围内的5次5级以上地震前,电磁波具有明显的短临异常特征。阿图什、喀什2个台站电磁波最大值的异常图像虽有一定差异,但均有重复性。阿图什电磁波异常形态为上升—下降的高值变化过程,而喀什电磁波异常形态主要为高值突跳。异常时间一般出现在震前10 d内,具有较好的临震指示意义。 相似文献
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再论MDCB地震监测仪的映震效果 总被引:2,自引:0,他引:2
分析了 M D C B 型地震监测仪在廊坊连续42 个月观测期间, 所记录的类地应力值、8 方位异常值和异常频度等14 种电磁波地震前兆异常参数的动态趋势、方向性反映、临震变化与一定范围内一定强度地震的对应关系, 并得出了电磁波前兆异常参数与地震数量关系的初步结果。 相似文献
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Dynamic tracing of space-time evolution pattern of wave velocity ratio before the Lijiang earthquake with M=7.0 occurred on February 3, 1996 in northwestern Yunnan. We compared the Ninglang earthquakes with M=6.7 and M=6.4 which occurred on November 7 and December 13. 1976, 90 km away from the Lijiang earthquake. We found that the space-time evolution patterns of velocity that various authors' studied at different times are very similar.Anomaly areas of wave velocity ratio with high values appeared in the seismogenic areas 5 -7 years before the strong earthquake. Anomalies with low values in large areas appeared 3-4 years before the earthquake. Once again the anomaly areas of wave velocity ratio with high values appear in a lower range 1 ~2 years before. The strong earthquake occurred in the overlapping area of two high value anomaly areas, surrounded by the anomaly areas with low values. The monthly mean values of wave velocity ratio before the two strong earthquakes had maintained low value anomalies 相似文献