天然气的无机元素的土壤化探元素预测指标的探索

通过德阳新场气田化探成果与气田上有机元素异常，物探异常和钻孔实际见气的对比，以及对成都地区，宜宾地区化探成果的综合研究，认为As,Sb,Hb,Ba,Mn五元素及Cu,Pb,Zn,Mo,Cd,Ni,V,P等是预测天然气的指标，用该指标对新场气田和成都地区实际勘察结果对照，证实预测指标是正确的，从而探索出一条利用化探无机元素异常寻找天然气的新路。     

都日木断陷化探普查成效分析

都日木断陷为二连盆地的中新生代单断型凹陷,其地表为腾格尔沙漠的一部分。根据地面化探测量结果,结合地质、地震等资料,指出了该断陷具有良好的含油气远景,最有利区为蒙古勒背斜,有利区为板新图断块和布拉格背斜。该工作为该区下一步勘探指明了方向,也为在沙漠区进行化探工作积累了经验。     

天然气化探异常机理探讨及其在勘探中的意义

天然气在地质体中运移过程中留下示踪痕迹，通过化探的方法，结合地质、地球物理方法，确定近地表地球化学效应或井下地球化学效应，为油气的进一步勘探提供地质资料和参考价值。     

地球重力模型及中国大陆重力场的计算

融多颗卫星数据、地面重力值和其它资料一起的地球重力模型EGM 96 ,为研究中国大陆的重力场及相关问题提供了一个高精度 36 0阶的球谐系数。在分析EGM 96的基础上 ,计算并简单解释了中国大陆的自由空气异常和布格重力异常。计算所得重力场的精度和分辨率大大高于常用的1∶140 0 0 0 0 0自由空气异常图及布格重力图     

地震勘探在山东蓬家夼金矿深部预测中的应用

在分析了石油地震与金属矿地震不同点的基础上，简介了地震勘探方法的基本原理，并通过在山东蓬家夼金矿的实际应用，得到了理想的效果，为隐伏矿床的精确定位预测提供了十分重要的地球物理资料。     

Recent applications of sliding block theory to geotechnical design

The sliding block theory was proposed by Newmark for determining the permanent displacement of embankments and dams under earthquake loading. This paper highlights recent applications of sliding block theory to different geotechnical structures. The equations to determine seismic factor of safety, yield acceleration and permanent displacement are given for rock block, soil slope, landfill cover, geosynthetic-reinforced soil retaining wall, and composite breakwater. The presented equations for seismic stability degenerate to that of static stability in the absence of earthquake. The permanent displacement for various structures can be obtained from that of a horizontal sliding block through a correction factor. A simplified procedure is included for the permanent displacement under vertical acceleration. The sliding block approach is rational for design under high seismic load.     

Seismic vulnerability of Kuwait and other Arabian Gulf countries: information base and research needs

This paper points to the need for seismic risk and vulnerability assessment of infrastructure systems, most notably tall structures and coastal facilities, in Kuwait and other Arabian Gulf countries. Building codes in the region currently lack seismic provisions, despite evidence of a potential threat from large-magnitude earthquakes originating from the southern part of the Zagros fold belt. The historical record of Iranian earthquakes that may have caused significant ground motion in the Gulf region is examined, as are reports of coastal damage from tsunamis. Various specific tasks, expected to constitute research priorities of a Joint Center for Risk Research, a cooperative research program involving Princeton and Kuwait Universities, are outlined.     

Post-earthquake investigation on several geosynthetic-reinforced soil retaining walls and slopes during the Ji-Ji earthquake of Taiwan

This paper gives an overview on the application of geosynthetic-reinforced soil structures in Taiwan. Taiwan has an unique topography and geotechnical conditions that rendered a less conservative and more challenging design compared to that of North America, Europe and Japan. The Ji-Ji (Chi-Chi) earthquake of 1999 gave an opportunity to examine the behavior of reinforced soil structures. The performance of several modular-block reinforced soil retaining walls and reinforced slopes at the vicinity of the fault was evaluated. Reinforced structures performed better than unreinforced soil retaining walls. The failure cases were highlighted and the cause of failure was identified. The lack of seismic design consideration could be a major cause of failure. The compound failure mode, the inertia force of the blocks, and the connection stiffness and strength relative to the large dynamic earth pressure, were among major items that would warrant further design consideration.     

河套华北地区旱涝的前期环流异常与大西洋海温的关系及其数值模拟

首先分析了河套华北地区旱涝的前期异常环流，然后探讨了这种异常环流形成的机制，最后采用了ＯＳＵ－ＡＧＣＭ作了大西洋地区热源异常强迫的数值试验。结果表明，大西洋地区海温异常强迫激发的定常波向上、下游的能量传播，造成的前期秋冬季环流异常与河套华北地区的夏季旱涝有较好的对应关系。     

浑江市幅区域化探异常遥感评价筛选研究

本文介绍了根据国家计委和地矿部的要求,应用遥感地质方法,即主要通过航卫片解译,结合本区已有地质矿产分布和物化探资料的综合分析,对吉林省浑江市幅区域化探异常进行遥感评价、筛选研究的概况。文中主要阐述了区内金、多金属矿成矿地质特征,论述了断裂构造和环状构造与金、多金属矿及化探异常的关系,简介了区域化探异常遥感评价筛选和野外验证结果以及圈定的若干找矿靶区的情况。