用气象卫星资料推算黑河地区地表特征参数   总被引：7，自引：5，他引：7  

陈添宇  陈乾 《高原气象》1992,11(4):431-439

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汕头市历史地震影响烈度的分析   总被引：1，自引：0，他引：1  

贾素娟 《华南地震》1992,12(1):57-63

本文将所论地震事件视为随机事件。按全概率定理分析了地震对场地的地震动影响(A)和超越给定值的概率P:对地震烈度序列进行了极值统计分析,得到汕头市地震平均重现期及其对应的烈度值。  相似文献   

多项地震前兆观测数据的综合参数     

赵卫明  李根起 《内陆地震》1992,6(1):19-24

根据中强地震前前兆观测资料的异常特征和各种前兆异常可信度的差异,考虑到单项观测数据和多项观测数据的相互联系,提出了用综合参数S描述多项前兆观测数据整体变化。结果表明,与单项前兆观测数据比较,综合参数S有变化平稳、震前异常反应明显等优点,可以作为地震预报实践中识别前兆异常的方法之一。  相似文献   

A data collection and analysis system for research on rock fracturing     

Cantao Zhuang  Su Xu  Weixue Zhang  Zhaoyong Xu  Shirong Mei 《地震学报(英文版)》1992,5(3):609-615

We have made a data collection and analysis system for recording microcracks in rock to study the three dimensional pattern of fracture and the dynamic properties of rock during pressurization. This system, with 8 channel data detection, records in real-time, from the initial microcracks to the final vibration waveform excited by the master fracture. The detected data are recorded digitally at the hard disk of an IBM computer (or 286, 386 personal computer) as well as transmitted to disk. The sampling rate for each channel is 10 MHz. Collecting every acoustic emission events in the loaded rock sample with 8 channels by this system, mathematically modelling the AE event travel time, and taking the coordinates of the AE event hypocenter and the three components of P wave velocity as unknown parameters, we set up a set of residual equations for joint inversion, so that the three dimensional localization of AE event hypocenters can be completed under variable velocities, which will lay foundations for the research on rock fracture clearly. The Chinese version of this paper appeared in the Chinese edition ofActa Seismological Sinica,13, 489–495, 1991. The design and development of the system, and the experiments are sponsored by the Chinese Joint Seismological Science Foundation.  相似文献   

松潘地区岩金统计成矿予测中泛克立格法的应用     

刘智光  汪西鸣 《矿物岩石》1992,(1)

川西北地区是国内重要的岩金普查靶区。本文对松潘地区的地质特征,泛克立格法原理,及在本区的应用情况作了介绍,对主要计算步骤,给出基本结果,对计算获得的有意义异常区,进行地质解释,并将此方法与趋势面分析进行对比。  相似文献   

抚顺西露天矿北帮变形有限元分析     

佴磊 《吉林大学学报(地球科学版)》1992,(3)

本文应用有限单元法对抚顺西露天矿北帮边坡及地表变形进行分析.确定了在地下开采当时、露天开采当时及不同充填类型地下采场当构造地应力降低时边坡及地表的变形特征.给出了不同情况下的位移场、应力场及塑性区的分布.并对不同情况下的变形、应力分布及塑性区特征进行了对比研究.  相似文献   

钻井岩心定向或岩石露头定向样品的古地磁数据处理程序     

顾心如 《吉林大学学报(地球科学版)》1992,(4)

本程序适用的范围很广,包括钻井岩心采样,岩石露头采样.坐标系则包括样品坐标,层面坐标与地理坐标.处理内容则包括逐步退磁结果数据表;退磁曲线;正交矢量图,赤平极射投影及其放大图.  相似文献   

重、磁数据处理和图象显示FORTRAN程序库     

许惠平  李庆宣  孙运生 《吉林大学学报(地球科学版)》1992,(2)

重、磁常规数据处理在地质上得到广泛应用,我们建立了一个标准的常规数据处理工具库:HKl.LIB,同时,在库中加入图形函数,使得能够使用FOR-TRAN语言编制绘图软件。  相似文献   

Sediment shear Q from airgun OBS data   总被引：2，自引：0，他引：2  

P. D. Bromirski  L. N. Frazer  F. K. Duennebier 《Geophysical Journal International》1992,110(3):465-485

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The Reliability of Using the Iterative Proportional Fitting Procedure*     

David W. S. Wong 《The Professional geographer》1992,44(3):340-348

This paper demonstrates the utility of the iterative proportional fitting procedure (IPF) in generating disaggregated spatial data from aggregated data and evaluates the performance of the procedure. Estimates of individual level data created by IPF using data of equal-interval categories are reliable, but the performance of the estimation can be improved by increasing sample size. The improvement usually is enough to offset the increase in error created by other factors. If the two variables defining the cross-classification have a significant interaction effect and the number of categories in each variable is larger than two, then IPF is preferred over an independent model.  相似文献