钻孔应变仪在地震前的记录及地震预测

１９８５年以来,在新疆进行了钻孔应变连续观测,已积累了大量可贵资料,曾多次记录到地震前的应变异常变化。将这些资料用之于地震预测,取得了一定的成效。本给出了其中７个地震前的记录实例,并简要介绍了地震预测的情况。     

伊兹米特地震地表破裂带和发震构造特点

１９９９年伊慈米特７．４级地震地表破裂带表现清楚。在几何学特点上,它基本上由４个破裂段斜裂组合而成,沿破裂段可见不同的构造组相样式。在破裂段的阶区,主要发育张性构造。破裂段的最在工为５１ｍ,在运动学上,以右旋走滑运动为主,最大位错３．８ｍ‘走滑段最大垂直位错０．６ｍ。向观震中与地表最大位理合,基本上处于破裂带中间地段。地城寺表破裂带的动力学和几何学特征与震源机制解反映出来的结果相一致。     

1999年辽宁省岫岩5.4级地震的临震预报及其地震活动研究

１９９９年１１月２９日１２日１０分（北京时间）,中国辽宁省岫岩地区发生一次５．４级地震。这次地震前,在震区记录到丰富的中小地震活动,组成了完整的地震系列。该系列具有小震频度随时间增多,震级上升,ｂ值较低,地震位置集中和地震Ｐ波被动一致,将其判断为震前系列,并抓住了前震活动从密集突然变为相对平静这一大震即将发生的特征,作出了临震预报,于１１月２８日晚入震意见通报给辽宁省地震局有关部门。这次地震的预报     

对中国西部大开发战略中防震减灾工作的思考

阐述了防震减灾工作在中国西部大开发战略中的地位和作用 ,做好西部大开发战略中防震减灾工作的指导思想以及西部防震减灾工作的现状、问题和建议     

从第22届IUGG大会看地震预测研究

1999年 7月 19～ 3 0日 ,第 2 2届 IUGG大会在英国伯明翰大学举行。从提交的论文中可以看出 ,有关地震预测和地震灾害的研究仍是地学界关注的热点问题。文章介绍了这次大会反映出的有关地震预测研究的情况。     

俄罗斯减轻地震灾害的政策,计算和管理的分析（1994～1998）

根据近年来俄罗斯科学院与俄罗斯紧急情况和减轻自然灾害后果部的有关资料 ,叙述了该国减轻地震灾害的情况和成果 ;分析了相关的政策、计划和管理中的一些问题 ,并提出了若干参考建议 ,供有关部门研究     

Nucleation of earthquakes and its implication to precursors

IntroductionIn the middle of 1990s, the argument about nucleation phase occurred. Ellsworth and Beroza(1 995) studied the wave records of 30 earthquake events, which initiated slowly. Ellsworth, et al calledthem as nucleation phase. They discussed the relationship between their moment, duration time andthe relationship with the main shock behind. Scherbaum (1997a, b) proposed his different view andsuggested that some of the recording of the long period initial of seismic wave was misinterpret…     

Study on coupling between deep and shallow structures of Xingtai area and some significant questions

IntroductionIn order to gain a clear idea of the deep tectonic environment of Xingtai earthquake area,three wide-angle deep seismic renectionlrefraction profiles have been conducted through the are4they are Yuanshi--Ji'nan profile, Renxian--Wuqing profile and Tat' an--LongyaM inzhou profi I e.The Yuanshi--Ji'nan profile passes through the epicenter of the Ms=7.2 main shock andTat' ~ongyaO--X inzhou profi ie passes through the ep icenter of the Ms=6. 8 earthquake. Duringthe "Eighth Five-…     

Characteristics of teh seismic source stress field in teh joint region of Xianshuihe ,Long Monitoring the horizontal movement along the Shanxi faults

Twenty-two earthquakes (M _L=2.2–3.7) in the joint region of Xianshuihe, Longmenshan and An’ninghe faults are studied in this paper. The source mechanism solutions of these events are obtained using P-wave first motion method, and the characteristics of the source stress field and rupture in the joint region are summarized preliminarily with some results of other researchers. Being strongly extruded by the approximately horizontal regional stress with the direction from north-west to south-east and the effect of the complex tectonics in the region, the source stress field has complex and variable characteristics. The earthquakes mainly show normal or strike-slip faults in Yajiang, North-triangle and west of Chengdu-block areas, indicating that the vertical forces have been playing an important role in the source stress fields, while the earthquakes mainly show reverse or strike-slip faults in Baoxing-Tianquan area, with the horizontal components of the principal pressure stress axes identical to the south-west direction to which the shallow mass is moving. We think that the manifold combinations of earthquake faults are the micro-mechanism based upon which the large regional shallow crust mass has been moving continually.     

山西侯马—河津一带西汉初期的强烈地震

1989年至1987年间,在国家地震局招标合同项目《全新世古地震的研究方法和确定标志》工作中,笔者在山西省侯马至河津一带,发现了大规模地震断层和许多古地震遗迹。本文就是在此基础上,对黄土中的古地震遗迹进行了总结,分析研究了古地震的分布和特征,讨论了侯马至河津一带西汉初期强震的规模和震中。