共查询到20条相似文献，搜索用时 593 毫秒
1.
Ａｃａｓｅｓｔｕｄｙ：ｃｒｏｓｓ－ｗｅｌｌａｃｏｕｓｔｉｃｔｏｍｏｇｒａｐｈｙｉｎＦｕｙｕｏｉｌ－ｆｉｅｌｄＲｕｉ．ＦＥＮＧ；（冯锐）ＲｕｉＹＡＮ；（＠２阎锐）ＹｉＴＡＮＧ；（汤毅）Ｚｈｏｎｇ－ＹｕａｎＷＡＮＧ；（王忠元）Ｊｉａｎ－ＰｉｎｇＷＵ；（吴... 相似文献
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ＲｅｄｉｓｃｕｓｓｉｏｎｏｎｔｈｅｓｅｉｓｍｉｃｒｅｇｉｍｅｎｅｔｗｏｒｋＺｅ－ＧａｏＷＡＮＧ（王泽皋）；Ｐｅｉ－ＱｉｎｇＳＵＮ（孙佩卿）；Ｊｉｎｇ－ＣｈｕｎＧＡＯ（高景春）；Ｓｈｕ－ＬｉａｎＬＩ（李淑莲）；ＸｕｅＺＨＡＮＧ（张雪）ａｎｄＹａｎＧＵＯ... 相似文献
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Ｅｆｆｅｃｔｓｏｆｍｉｎｉｎｇ－ｉｎｄｕｃｅｄｅａｒｔｈｑｕａｋｅｓｏｎｗａｔｅｒｔａｂｌｅｉｎｄｅｅｐｗｅｌｌｓＹｏｎｇ－ＴａｔＣＨＥ；Ｚｈｉ－Ｆｅｎｇ；Ｙｏｕ－ＰｅｉＷＡＮＧ；Ｊｉｎ－ＺｉＹＵ；Ｊｉ－ＧａｎｇＨＵＡＮＧａｎｄＱｉＷＡＮＧ（车用太，... 相似文献
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ＴｈｅｓｔｕｄｙａｎｄａｐｐｌｉｃａｔｉｏｎｏｆＰＴＲａｌｇｏｒｉｔｈｍｏｎｒｅｃｏｇｎｉｚｉｎｇｖａｒｉｏｕｓｓｔｒｕｃｔｕｒｅｓａｍｐｌｅｓＢｉ－ＱｕａｎＷＡＮＧ（王碧泉）；Ｈａｎ－ＭｉｎｇＨＵＡＮＧ（黄汉明）ａｎｄＨｏｎｇ－ＳｈｕｎＦＡＮ（范洪... 相似文献
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ＵｐｐｅｒｍａｎｔｌｅｆｌｏｗｂｅｎｅａｔｈｔｈｅＮｏｒｔｈｗｅｓｔｏｆＣｈｉｎａａｎｄｉｔｓｌｉｔｈｏｓｐｈｅｒｉｃｄｙｎａｍｉｃｓＪＩＡＮ－ＨＵＡＨＵＡＮＧＩ（黄建华）；ＸＩＡ－ＨＵＡＣＨＡＮＧＩ（常筱华）ａｎｄＲＯＮＧ－ＳＨＡＮＦＵＩ傅容珊）（... 相似文献
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（王椿镛，张先康，林中洋，李学清）ＣｈａｒａｃｔｅｒｉｓｔｉｃｏｆｃｒｕｓｔａｌｓｔｒｕｃｔｕｒｅｉｎｔｈｅＳｈｕｌｕｆａｕｌｔｂａｓｉｎａｎｄｉｔｓｖｉｃｉｎｉｔｙ￥Ｃｈｕｎ－ＹｏｎｇＷＡＮＧＩ；Ｘｉａｎ－ＫａｎｇＺＨＡＮＧ；Ｚｈｏｎｇ－ＹａｎｇＬ... 相似文献
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Ｔｈｅａｐｐｌｉｃａｔｉｏｎｏｆｍｉｃｒｏｗａｖｅｒｅｍｏｔｅｓｅｎｓｉｎｇｔｅｃｈｎｏｌｏｇｙｉｎｒｏｃｋ ｍｅｃｈａｎｉｃｓＮａｉ－ＧｕａｎｇＧＥＮＧ（耿乃光）；Ｚｈｅｎｇ－ＦａｎｇＦＡＮ（樊正芳）；Ｑｕａｎ－ＱｕａｎＪＩ（籍全权）；Ｃｈｅｎｇ－... 相似文献
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Ｒｅｓｅａｒｃｈｏｎｅａｒｔｈｑｕａｋｅｐｒｅｄｉｃｔｉｏｎｆｒｏｍｇｅｏｍａｇｎｅｔｉｃｐｕｌｓａｔｉｏｎ周军成，韩克礼，王培德，鲁跃Ｊｕｎ－ＣｈｅｎｇＺＨＯＵ；Ｋｅ－ＬｉＨＡＮ；Ｐｅｉ－ＤｅＷＡＮＧａｎｄＹｕｅＬＵ（ＩｎｓｔｉｔｕｔｅｏｆＧｅｏｐ... 相似文献
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ＲｅｓｅａｒｃｈｏｎｎｏｎｌｉｎｅａｒＲ／ＳｍｅｔｈｏｄａｎｄｉｔｓｐｐｌｉｃａｔｉｏｎｉｎｅａｒｔｈｑｕａｋｅｐｒｅｄｉｃｔｉｏｎＢｉ－ＱｕａｎＷＡＮＧ（王碧泉）；Ｈａｎ－ＭｉｎｇＨＵＡＮＧ（黄汉明）；Ｈｏｎｇ－ＳｈｕｎＦＡＮ（范洪顺）；Ｃｈｕｅｎ... 相似文献
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Tomographic determination of 3－D crustal structure──Joint inversion of explosion and earthquake data
Ｔｏｍｏｇｒａｐｈｉｃｄｅｔｅｒｍｉｎａｔｉｏｎｏｆ３－Ｄｃｒｕｓｔａｌｓｔｒｕｃｔｕｒｅ──Ｊｏｉｎｔｉｎｖｅｒｓｉｏｎｏｆｅｘｐｌｏｓｉｏｎａｎｄｅａｒｔｈｑｕａｋｅ ｄａｔａＸｉａｎ－ＫａｎｇＺＨＡＮＧ（张先康）；Ｚｈｕｏ－ＸｉｎＹＡＮＧ（杨卓... 相似文献
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Ultra low frequency electromagnetic wave anomaly and its spectrum characteristics before earthquakes 总被引：1，自引：0，他引：1
Jian-Guo Hao Yun-Fu Zhang Huai-Wen Pan De-Rui Li Tian-Ming Tang Xiao-Qin Liu 《地震学报(英文版)》1995,8(1):101-109
Many observations and researches show that abundant and intense ultra low frequency (ULF) electromagnetic anomalies appeare
before local earthquakes. In order to understand this phenomenon systematically, the transmission property and the formation
of the seismic-electric dipole are discussed in this paper. The results show that the vertical component of the ULF electric
anomaly before earthquake has the properties of better penetration, less disturbance and high signal-to-noise ratio. The signal
can be easily extracted and received. The anomaly should be an important way to seek for reliable short-term and imminent
earthquake precursors. After the spectrum analysis of the (ULF) electric field anomalies, we found that the periods of the
anomaly related to local earthquakes are from a few minutes to a dozens minutes. There is a relation between the spectrum
of the anomaly and the epicentral distance. The ULF electric field anomalies strongly rely on the orientation of the seismogenic
zone. The percolation electric field anomaly and its spectrum amplitude do not have obvious relation with the size of local
earthquakes.
Contribution No. 94A0097, Institute of Geophysics, SSB, China.
The English version is improved by Prof. Guo-Hua FAN, Institute of Geophysics, State Seismological Bureau. 相似文献
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大气电场异常作为地震短临预报标志研究进展 总被引：5，自引：0，他引：5
通过对华北地地区进行震前大气电场异常观测研究的较为全面分析和总结,验证和论述了震前大气电场异常的基本特征,用大量的震例证实了在每次较大的近场地震发生前都能观测到该类异常现象,以及当较长一段时间内观测不到该类异常时,近场近期也不会有较大地震发生的可能。 相似文献
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震前电磁场和大地自电位的异常是重要的地震前兆现象．在零磁空间对超低频段的磁场和自电位的变化进行了岩石破裂的实验研究，细致地揭示出电场、磁场出现异常变化的全过程，对深入认识超低频电磁信号的微观机理具有重要的意义．实验发现，岩石受力后应变、电位和磁场的缓慢变化在空间分布上是首先在近破裂源处出现，继而随裂纹的发展而改变位置；在时间序列上先出现自电位异常，然后是超低频磁场的变化；在异常形态上，超低频电磁信号呈现出早期、中期、晚期3个阶段的明显差异．研究表明，岩石微破裂引起裂隙尖端处的电荷分离. 静电荷在局部区域的积累和运移，导致了自电位的脉冲状变化；而在主破裂阶段，积累电荷的急速运动形成瞬间电流，激发了脉冲式的磁场异常．本文详细介绍了这一综合实验的技术步骤和观测结果，并对地震电磁前兆的微观机理进行了探讨． 相似文献
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The anomalies of electric-magnetic field and self-potential before earthquakes are important precursory phenom-ena.A simulating experiment study on the variations in ultra-low frequency(ULF)magnetic field and self-poten-tial during rock cracking was carried out in a magnetic field-free space.The results revealing in detail the whole process of the occurrences of electric and magnetic anomalises are significant for understanding the microscopic mechanism of ULF electric and magnetic signals.The experiment indicated that at the initial stage the slow changes in strain.self-potential and magnetic field with small amounts appeared firstly near the source of initial cracking,and then extended as the crack developed on.In the time domain,the self-potential anomaly emerged first and ULF magnetic field changes arose then.The shape of the ULF electric and magnetic anomaly varied ob-viously in early-,mid-and late-term of the test.The authors attributed the pulse-like changes of self-potential to the generationj and movement of the accumulated electric charges during the cracking caused by charge separation on the crack tips within the sample.While the magnetic pulses of shorter-period at the last stage of the test,may be induced by instantaneous electric current of the accumulated charege during the cracking acceleration.The technical method and the observational results of this experiment are given in detail and the microscopic mechanism of elec-tric and magnetic precursors before earthquake are discussd in the present paper as well. 相似文献
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ＡｐｏｓｓｉｂｌｅＵＬＦｓｅｉｓｍｉｃｅｌｅｃｔｒｏ－ｍａｇｎｅｔｉｃｅｍｉｓｓｉｏｎＸｉｎｇ－ＣａｉＬＩ；（李兴才）Ｈｕｉ－ＸｉｎＣＡＯ；（曹惠馨）Ｔｉｅ－ＨｏｎｇＹＵ；（俞铁宏）ａｎｄＺｈｉ－ＹｏｎｇＣＨＥＮ；（＠２陈智勇）（Ｉｎｓｔｉｔｕｔｅｏ... 相似文献
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空间电场信号异常识别是研究地震引起电离层扰动的重要内容。 将空间超低频电场电位数据看作随机数字信号, 以均值、 均方差、 偏度和峰度等四个指标进行描述, 采用“5·12”汶川大地震前空间超低频电场电位数据作为原始数据, 训练改进型BP神经网络, 建立了空间电场信号异常分类识别模型, 并以SOM神经网络进行验证。 计算结果显示, 空间超低频电场电位异常信号主要集中在5°~25°N, 88°~120°E之间的区域, 汶川大地震影响范围内的电离层扰动, 可能是汶川地震发生前引起的, 这与前人研究一致, 说明采用改进型BP神经网络异常分类识别模型研究地震引起的电离层扰动是可行的。 相似文献
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震前大气电场异常的区域性特征 总被引：4，自引：1，他引：4
在了近场每次较大地震发生前，均能观测到明显的大气电场负异常信息。在观测不到明显的大气电场负异常时，近场近期一般不会有较大地震发生的基础上，本文对北京及其附近地区为例，利用所观测到的在气电场异常资料及１９８５年后该地区所发生的８次Ｍｌ≥４地震资料，较深入地探讨了震前大气电场异常的空间分布特征，取得了一些规律性的认识：（１）异常多发生在距震中不太范围内，且随着震级的增大异常区的范围也增大。（２）较大地 相似文献
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本文分析了2010年10月-2011年3月云南通海ELF地震台站观测的电磁场资料,研究发现该资料变化与2011年发生在中国大陆"3·10"盈江5.8级及"3·24"缅甸7.2级地震存在以下关系,(1)470～1 Hz的磁场自功率密度谱(PSD)在2011年盈江5.8和缅甸7.2级地震前出现了脉冲丛集异常,异常幅度分别比正常月份变化约1～3个数量级.异常的幅度与观测点的电极方位和信号的频率有密切的关系.(2)2011年3月10日盈江地震的异常变化是先从地壳的深部向浅部发展,在震前25天2.6 km处的电阻率开始发生变化,震前10天400 m处的电阻率变化,出现了勺形的变化形态,阻抗相位同步变化.3月24日的缅甸7.2级地震,震前10天深部、浅部的电阻率同步发生了大幅度变化,阻抗相位发生转折,这可能是强震的变化特性. 相似文献