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in earthquake     
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  在地震
     Application of ANSYS/LS-DYNA in earthquake engineering
     ANSYS/LS-DYNA在地震工程中的应用
短句来源
     Simple Research of SuperMap Object's Application in Earthquake Disaster Prediction
     SuperMap Object在地震灾害预估中应用浅析
短句来源
     DISCUSSION ON APPLICATION OF S-WAVE SPLITTING IN EARTHQUAKE PREDICTION
     S波分裂在地震预报中应用的讨论
短句来源
     APPLIED STUDY ON INFORMATION ENTROPY OF WEIBULL DISTRIBUTION IN EARTHQUAKE PREDICTION
     Weibull分布的信息熵在地震预报中的应用研究
短句来源
     Through a great deal of documentary work a summary is drawn on the history of seismic anisotropy and S-wave splitting studies, and comments are made on the mechanism, recent results, and its application of S-wave splitting in earthquake prediction, and the prospects of the concerned researches as well.
     通过对国内外大量有关文献的分析、比较和筛选,对无序的情报信息作了有序的浓缩加工,本文将看重概述地震各向异性与S波分裂研究领域的发展历史、S波分裂机理及近期研究成果、S波分裂在地震预报研究中的应用、以及各向异性与S波分裂研究的前景,并给予相应评述。
短句来源
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  地震
     Application of ANSYS/LS-DYNA in earthquake engineering
     ANSYS/LS-DYNA在地震工程中的应用
短句来源
     Conventional and Adaptive Pushover Analysis in Earthquake Engineering
     地震工程中的Conventional Pushover和Adaptive Pushover分析法
短句来源
     Simple Research of SuperMap Object's Application in Earthquake Disaster Prediction
     SuperMap Object在地震灾害预估中应用浅析
短句来源
     Application of Microsoft SQL Server 2000 in Earthquake Precursory Station Network Center of Tianjin City
     Microsoft SQL Server2000在天津市地震前兆台网中心的应用
短句来源
     The authors summarized the application effect of fuzzy clustering analysis method in earthquake prediction in range of Gansu province from 1993 to 1997. It is evaluated,in the Hexi Corridor zone and the northern segment zone of the South-North Earthquake Belt,that predicition capcity is 0. 55 and 0. 61 respectively,and that prediction successful rate is 0. 5 and 0. 58 respectively with deducted random probability.
     总结了1993~1997年应用模糊聚类分析方法对甘肃省地震预报的效果,通过评价得到对河西走廊地区和南北地震带北段地区的预报能力分别为0.55和0.61,扣除随机概率的预报成功率分别为0.5和0.58。
短句来源
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  对地震
     SCIENTFIC FOUNDATION FOR CONFIDENCE IN EARTHQUAKE PREDICTION RESEARCH
     对地震预测研究的信心的科学基础
短句来源
     The author suggests to set up two kinds of test site in earthquake prediction study.
     根据对地震前兆观测项目预测效能初步研究,作者建议“十一五”期间应该建设两种地震预测试验场。
短句来源
     FRACTAL FEATURES OF EARTHQUAKES AND ITS SIGNIFICANCE IN EARTHQUAKE PREDICTION
     地震活动的分形特征及其对地震预测的意义
短句来源
     This paper presents some results in evaluation and test on several popular computer languages used in earthquake engineering field , including FORTRAN, BASIC, PASCAL and C.
     本文对地震工程领域常用的几种计算机语言进行了评测,其中包括BASIC,FORTRAN,PASCAL和C。
短句来源
     The results are of significance in earthquake preduction and forecasting.
     研究结果对地震预报具有一定的意义。
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  于地震
     Some Problems of Seismicity Research and Its Application in Earthquake Prediction
     地震活动性研究及其应用于地震预测的一些问题
短句来源
     Meanwhile,we study PP -value of non-seismological precursory index in earthquake prediction.
     同时研究了非测震学前兆综合指标 PP值的确定和应用效果检验及其空间扫描的动态显示 ,尝试了震兆指标和前兆指标联合应用于地震预报的研究。
短句来源
     Generation of synthetic earthquake catalogs; applications in earthquake hazard and seismic risk assessment
     合成地震目录的生成:应用于地震灾害及危险性的评估
短句来源
     Currently, the technique of GIS have been applied extensively in earthquake science, such as earthquake forecasts, earthquake disaster prediction and assist decision, earthquake region layout, and so on.
     目前GIS技术广泛应用于地震分析预报、地震灾害预测和辅助决策、地震区划等地震学研究领域.
短句来源
     This paper applies the theory of stochastic vibration in the analysis in earthquake lique faction and points out the necissity of the application of the theoretical analysis in stochastic vibration. It has deduced a series of formulae for the calculation of foundation liquefaction in the light of the method of finile element and has solved the calculation problem of the nonlinear nalure of sild with the application of the method in equivalent linearization.
     本文将随机振动理论应用于地震液化的研究,并应用随机振动理论,结合有限元方法,导出了计算地基液化的一整套公式,用等价线性化方法解决了土的非线性性质的计算,结合平稳高斯窄带过程的峰值分布,导出了剪应力在地震持时[0,T]内的作用次数,用以代替地震荷载往返周数。 此方法较之目前地震液化研究中的通用方法在理论上更趋于严密。
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  in earthquake
The evolution of the concepts of the concentration criterion of fracture of solids, proposed by Zhurkov, in connection with its use for forecasting strong seismic events in earthquake source physics is considered.
      
Distinctions in the dynamics of earthquakes developing downward and toward the surface are examined and accounted for by a low density fluid phase present in earthquake sources.
      
A new insight into the problem of annual periodicity of the electric resistivity of the Earth's crust in earthquake prediction r
      
Overcoming obstacles to implementation: addressing political, institutional and behavioral problems in earthquake hazard mitigat
      
Investigation of earthquake mechanisms and their impact on certain basic concepts in earthquake engineering and seismology
      
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The main subjects in relation to the earthquake resistant design of earth dams such as the determination of seismic forces acting upon earth dams and their foundations,the evaluation of dynamic properties of soils under seismic actions,the method of analysis of seismic stability of earth dams and the engineering measures in earthquake resistant de- sign of earth dams are reviewed systematically based on literatures and data which are available to the author. The works done by Matumura,Mononobe,Hatanaka,Ambraseys...

The main subjects in relation to the earthquake resistant design of earth dams such as the determination of seismic forces acting upon earth dams and their foundations,the evaluation of dynamic properties of soils under seismic actions,the method of analysis of seismic stability of earth dams and the engineering measures in earthquake resistant de- sign of earth dams are reviewed systematically based on literatures and data which are available to the author. The works done by Matumura,Mononobe,Hatanaka,Ambraseys and Napetvaridze on the dynamic theories of seismic forces of earth dams are specially reviewed,also the prevalent practices in USSR,Japan,America,etc.about the method of calculation of seismic forces of earth dams are mentioned. On the subject of dynamic properties of soils under seismic actions the stress-strain relationship,damping characteristic,shear strength and pore pressure of the soil and soil mass are discussed. Following a brief review of the methods of analysis of seismic stability of earth dams the paper presents a table compiling records of the seismic behavior of thirty two earth dams in several earthquake regions of the world.According to the actual behavior of earth dams at earthquakes the author calls attention to the designers how and why it is necessary and important to take special engineering measures in earthquake resistant de- sign of earth dams,even though many of those measures may be entirely empirical at present stage of our knowledge. Finally,the author recaptulates a few topics for further research and future develop- ment.

本文对土坝抗地震设计中有关地震荷载、土的动力性质、土坝地震稳定分析方法和防震工程措施等方面的问题,进行了综合论述.在土坝地震荷载方面,着重介绍了日本松村、物部和畑中,英国恩伯拉散斯(N.N.Ambraseys)和苏联那比脱伐列齐等人所做的工作,以及目前在苏联、日本和美国等土坝设计中关于士坝地震荷载估算方面的实际执行情况.关于土在地震动力作用下的特性方面,文中主要介绍和讨论了目前上坝地震动力分析理论中所采用的土的应力应变关系和阻尼问题,以及土坝地震稳定分析中所需考虑的土的抗剪强度和孔隙压力问题.关于土坝地震稳定分析方法和防震工程措施方面,文中在简单介绍了目前一般采用的土坝地震稳定静力分析方法之后,又根据世界上若干地震区土坝实际情况的记载,提出土坝防震工程措施的重要性,和在地震区设计土坝时应注意的问题.文中最后并提出了今后研究工作的初步意见.

The theoretical analysis of normal variations of the 8 and P amplitude relation is given. The possibility and limitation for the use of the amplitude relation in earthquake prediction are discussed. For example, the observed anomalies of the S and P amplitude relation before and after the Sichi (西吉) earthquake (December 3, 1970, M=5.7) are shown.The preliminary results are: (1) the amplitude relation |Ws/Wp| of the vertical dis-placements of S and P waves is remarkably decreased before and after...

The theoretical analysis of normal variations of the 8 and P amplitude relation is given. The possibility and limitation for the use of the amplitude relation in earthquake prediction are discussed. For example, the observed anomalies of the S and P amplitude relation before and after the Sichi (西吉) earthquake (December 3, 1970, M=5.7) are shown.The preliminary results are: (1) the amplitude relation |Ws/Wp| of the vertical dis-placements of S and P waves is remarkably decreased before and after the largeearthquakes; (2) the |Ws/Wp| anomalies correspond approximately with the velocityanomalies both in spatial distribution and in time sequence.The method of earthquake prediction by means of amplitude relation anomalies is suggested, it is analogous to that by means of velocity anomalies.Finally, the physical implication of the anomalies of the 8 and P amplitude relation before and after large earthquakes is discussed.

本文对波振幅比的正常变化作了理论分析,讨论了利用波振幅比变化预报地震的可能性及其应用范围。作为具体实例,给出并分析了1970年西吉5.7级地震前后振幅比异常的实际观测结果。 得出的初步结论是:(1)较大地震前后波垂直向位移振幅比值|Ws/Wp|明显减小;(2)|Ws/Wp|异常在空间分布上与时间发展过程上都大致和波速异常相对应。 采用与研究波速异常完全类似的方法,提出了利用振幅比异常预报较大地震的一些初步途径。 本文最后简要地讨论了较大地震前后振幅比异常的物理实质。

Several features of the premonitory anomalous variations of the mean velocity ratio of the P and S seismic waves (VP0 /Vs0 ) before the Yongshan(永善)- Daguan(大关) earthquake (M = 7.1) in Yunnan Province on May 11, 1974 are found: (1)The VP0 /Vs0 ratio had a conspicuous decrease for a duration of about 8 years and 5 months before the occurrence of the earthquake. (2) The ratio reached the same maximum value both at the beginning and the end of the anomalous period. (3) After a long-period of decrease, the ratio...

Several features of the premonitory anomalous variations of the mean velocity ratio of the P and S seismic waves (VP0 /Vs0 ) before the Yongshan(永善)- Daguan(大关) earthquake (M = 7.1) in Yunnan Province on May 11, 1974 are found: (1)The VP0 /Vs0 ratio had a conspicuous decrease for a duration of about 8 years and 5 months before the occurrence of the earthquake. (2) The ratio reached the same maximum value both at the beginning and the end of the anomalous period. (3) After a long-period of decrease, the ratio in a large region around the epicenter started to increase again first in the peripheral area of that region, then gradually towards the epicentral area. (4) All earthquakes with M ≥ 5 in the region occurred near the beginning and the end of the anomalous period and with each such event having its corresponding to a velocity ratio increase of short duration. (5) Certain correlations seem to exist between the orientation of the region of the anomalous velocity ratio and the source mechanism of the Yongshan - Daguan earthquake. A discussion of the re-sults as well as their application in earthquake prediction has also been made.

本文简要地给出了1974年5月11日云南省永善—大关7.1级强震前(?)、(?)波平均速度比V_(p0)V_(s0)前兆异常变化的一些主要特性:(1)7.1级强震前八年零五个月期间波速比V_(p0)/V_(s0)明显减小;(2)V_(p0)/V_(s0)在异常过程开始之前达到一个极大值,在异常过程结束时又取同样的极大值;(3)经过长时期、大面积的减小之后,波速比V_(p0)/V_(s0)先在距震中较远的地区内回升,然后才在震中区内回升;(4)5级以上地震都发生在异常过程的初期及末期,且各自对应着波速比的临时短期增大;(5)波速异常区的定向与强震的震源机制间有一定的对应关系。文章对所得结果作了一些简单的讨论,并指出了在地震预报中的应用。

 
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