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|  | | 为了更好的帮助您理解掌握查询词或其译词在地道英语中的实际用法,我们为您准备了出自英文原文的大量英语例句,供您参考。 | |
Geoacoustic location of earthquake preparation areas
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The ground-based ionosondes made it possible to detect an insignificant anomalous decrease in foF2 within the zone of earthquake preparation a few days prior to the earthquake.
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In this paper, these observations are used to solve inverse problems of the theory of earthquake preparation in relation to the prediction problem.
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And it plays the triggering role for the occurrence of strong earthquake in the later stage of earthquake preparation.
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This difference may be helpful to interpret the characteristics (including the area) of earthquake preparation of different tectonics, and further to interpret the difference of the precursors between plate edge and intraplate.
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Tectonic forces from the relative movements between plates are transmitted into the continental crust, and then they create the earthquake generating stress field there.
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On the relation of the imminent sudden change in earth resistivity to the active fault and earthquake generating stress field
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The structure features of stick-slip mechanism of the strike-slip earthquake generating structure in the interior of the Chinese
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This is the third one of the paper series on the strike-slip earthquake generating structure in the interior of the Chinese mainland.
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The above characteristics have been preliminarily explained qualitatively and half-quantitatively by applying the strong body earthquake generating model and the hard inclusion theory.
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| | During the preparatory periods of the Haicheng earthquake and Tangshah earthquake, the occurrences of the stronger earthquakes in the precursory field were related to the moon's phase, the M_L≥4.5 earthquakes of the near-focus field in the trend precursory periods and the M_L≥4.0 earthquakes of the whole precursory field in the periods of the fast-changing precursors tended to occur around syzygy or quarter. The similar relationships existed for the main series of Haicheng earthquake and Tangshan earthquake... | | 海城和唐山地震的孕震期间,前兆异常区域内的较强地震趋于发生在朔望和上下弦,海城和唐山地震的主序列以及前兆异常区域内1900年以来发生的六级以上强震与月相也存在类似的相关。这些关系可以在地震预报中作参考。本文还对触发机制作了初步的探讨。 | | 文摘来源 | | In this paper the complexity of the short-term and impending earthquake precursors is studied with the anisotropic and quasi-elastic medium model and the source-composite model by using the finite-element numerical simulation. The result shows that the exhibitory degree depends on the closed degree of the observational site to the seismogenic structure. The closer the distance between the observational site and seismogenic structure, the more obvious the anomaly is. For the temporal distribution, the anomal... | | 本文选用各向异性的准弹性介质模型和震源组合模型,应用有限元数值模拟方法,研究了短临阶段地震前兆的复杂性。给出:临震异常的显现程度取决于观测点距发震构造的贴近程度。观测点越接近发震构造,异常越明显。在时间分布上,异常先在外围出现后在震中区出现,呈现为异常从外围向震中传播的特征。此外,对于在同一观测点上的多手段(多种物理量)观测,由于不同物理量各自依赖于孕震过程中不同的变化因子,因此,同一观测点上的不同物理量监测,其异常显示的情况往往也有明显的差异。 | | 文摘来源 | | In this paper the features of comprehensive variation of the short-term and impending anomlies are induced based on analysis of various short-term and impending anomlies befor 16 moderate strong esrthquakes in North China. The authors proposed two quantitative comprehensive marks of seismogenic process transited from the medium-term to the short-term on basis of the comprehensive feature of the short-term and impending anomlies; at same time authors studied that if it can issue comprehensive prediction indi... | | 本文对华北16次中强以上地震前多种前兆短临异常进行了分析,归纳出短临异常的综合变化特征。依据短临异常的综合特征,提出在中期异常背景上孕震过程由中期向短期过渡的两个定量化综合标志。研究了孕震后期在观测到较多数量短临异常情况下,能否发布5级以上地震预报意见的预报指标。作为本文结果的检验,计算了8次地震前的综合标志和预报指标。本研究工作在短临预报中具有一定的实用价值。 | | 文摘来源 | |   | | << 更多相关文摘 |
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