赴美国康奈尔大学进行INDEPTH合作研究小结

本文扼要地介绍了美国康奈尔大学深地层反射剖面技术特点和中美双方合作研究采用的处理流程，以及对ＩＮＤＥＰＴＨ反射地震剖面的地质解释和主要认识。文章后半部分主要介绍了美国康奈尔大学与ＩＮＤＥＰＴＨ相关的若干学术活动和他们进行大陆岩石图研究的主要方法。     

Strong motion records and synthetic isoseismals of the Pyrgos,Peloponnisos, Southern Greece,Earthquake Sequence of March 26, 1993

In this work, several seismological observations are presented in order to explain characteristic features of the earthquake sequence which occurred in March 1993 in southwestern Greece, very close to the city of Pyrgos.Fault plane solutions of the largest fore- and aftershocks and the main shock, as well as the directions at which the maximum ground accelerations were recorded suggest that this earthquake sequence has been developed by rupturing three distinct focal planes with different focal mechanisms. The first focal plane, located in the off-shore area, strikes NW-SE, dips SE and includes most of the foreshock activity. The foreshock activity migrated to the northeastern part of the city of Pyrgos and took place on planes with a predominant direction NE-SW. The main shock ofM _x =5.5 occurred in a focal plane located between the two above-mentioned areas. Strong motion records of significant shocks of the sequence show peak acceleration values on components consistent with the relevant fault plane solutions.Furthermore, the observed macroseismic field has been compared with synthetic isoseismals computed by using a certain velocity model and the focal mechanism parameters of the main shock.     

高精度合成地震记录制作方法及应用

合成地震记录的精度直接影响到地震地质层位的准确标定。在总结前人工作的基础上，提出一套高精度合成地震记录的制作方法：（1）利用VSP资料能准确地反映地震波在地震中传播速度的变化规律的优点，进行漂移校正，以提高深－时转换的精度；（2）利用密度测井资料与声波时差曲线联合计算反射系数序列，以提高反射系数序列的精度；（3）利用分时窗提取子波技术，解决长期以来合成地震记录中存在的子波问题。将此方法用于合成地震记录的制作，在提高合成地震记录与地震剖面的吻合度和分辨率方面，都取得了较好的效果。     

正Q模拟与反Q滤波层位标定

作者应用Futterman模型的相速度频散关系式导出了地震记录的Q值正演模拟与反Q滤波层位标定方法，并将该方法分别应用到实际地震层位标定中，处理结果表明，这两种层位标定方法较目前常用的直接层位标定方法具有较明显的优点。     

考虑动力压力裂隙网络岩体渗流应力耦合分析

渗流对裂隙网络岩体的作用力包括渗透静水压力和渗透动力压力（裂隙壁切向拖曳力）两部分。较全面地引入渗流与应力之间的相互作用关系，同时考虑渗透静水压力和切向拖曳力的作用，以裂隙（等效）隙宽与岩体应变的关系为桥梁，建立隙裂网络岩体渗流场与应力场耦合分析的数学模型，并采用有限元数值方法进行某工程实例的双场耦合分析，验证所建立模型的可靠性。     

森林旅游资源综合评价体系的建立与应用研究

在参考大量森林旅游资源综合评价资料的基础上，提出森林旅游资源综合评价体系。根据专家咨询系统的反馈信息，应用层次分析法（Analytic Hierarchy Process，简称AHP）对所选的25个指标变量进行了比较判断矩阵的构建和计算，定量确定了各指标变量在森林旅游资源综合评价体系中的权重及重要性次序。     

A study of crust and upper mantle structure in Northeastern region of China by means of synthetic seismograms

In this paper, structure models of the crust and upper mantle beneath each station have been obtained by way of fitting synthetic seismograms with P waveforms of deep focus teleseismic records from the 11 stations in the Northeastern Region of China. We have studied the structure in the region based on those models. Our results show that the medium of the crust and upper mantle is a layered structure with alternate high and low velocity layers within about 100 km under the region. The crustal thickness is about 31.8–35.8 km. The Chinese version of this paper appeared in the Chinese edition ofActa Seismologica Sinica,13, 471–479, 1991. This work is one part of the project funded by the State Seismological Bureau of China.