湖南砂矿金刚石中顺磁氮的分配特点和金刚石归类问题

利用EPR检测了200多颗湖南砂矿金刚石。为53颗晶体测定了顺磁N的含量。阐明了砂矿金刚石中顺磁N分配的一般特点:具顺磁N信号者占30％,具较大顺磁N含量(10~(17)—10~(18)N原子/cm~3)者只占7％,属I_b型的晶体～2％。通过顺磋和红外光谱资料对比,发现了一些奇异现象,设想后者起因于混型晶的存在。为使金刚石正确归类,给出了一套测试方案,强调了紫外、红外光谱,紫外形貌照相和EPR等手段的联合使用。     

华北石炭—二叠系古地理沉积环境的初步分析

华北石炭—二叠系沉积发育于平缓地台构造背景上。古地理环境分析表明:太原组为潮坪、港湾三角洲、海湾、滨海沼泽及浅海沉积:山西组为潮坪、港湾三角洲、滨海沼泽,分流平原及分流河道沉积;石盒子组主要为河流冲积平原及河道间沼泽沉积。华北的南北尚有差异。华北已发现石炭—二叠纪气田及气显示,将成为找油气的新领域。     

行星边界层内扩散特征的一个数值研究

使用近年来PBL内实测平均风,湍流统计量和拉氏时间尺度随高度变化的结果,对用最简单的二阶闭合假设导出的三维定常物质连续方程作数值解,分析讨论了风速、风向和湍流统计特征量的垂直切变以及粗糙长度z_0对PBL内浓度分布的影响。本文的结果对PBL内湍流扩散本质的认识及污染模式的建立均有益处。     

太阳宁静区的高分辨率像复原

本文介绍在怀柔６０ｃｍ多通道太阳望远镜上运用斑点干涉像复原方法所取得的一些初步结果,对用短暴光方法（暴光时间不大于１０毫秒）获得的一系列“冻结”大气后的目标像用斑点干涉像复原方法进行处理,即可获得消除了地球大气影响的目标复原像,斑点掩模法即为斑点干涉像复原方法的一种,我们用它对日面中心的宁静区米粒进行处理,复原出了分率不劣于０．〃５的白光米粒象。     

面向对象三维有限元分析程序的研究和实现

计算分析在岩土工程应用和研究中占有相当大的比重。传统的结构化编程方式需花费大量工时 ,而且在可扩充性和代码可重用性方面也受到许多约束。因此 ,将面向对象编程技术应用于有限元程序编制正成为岩土工程计算程序设计的主流。将面向对象有限元方法引入三维有限元程序 ,用C ++语言编制了一个筏板基础与地基共同作用有限元分析程序 ,作为对有限元新方法的一次有益尝试     

Surface rupture zone of the 1303 Hongtong M=8 earthquake, Shanxi Province

Based on the latest displacement of Huoshan piedmont fault, Mianshan west-side fault and Taigu fault obtained from the beginning of 1990‘s up to the present, the characteristics of distribution and displacement of surface rupture zone of the 1303 Hongtong M = 8 earthquake, Shanxi Province are synthesized and discussed in the paper. If Taigu fault, Mianshan west-side fault and Huoshan piedmont fault were contemporarily active during the 1303 Hongtong M = 8 earthquake, the surface rupture zone would be 160 km long and could be divided into 3 segments, that is, the 50-km-long Huoshan piedmont fault segment, 35-km-long Mianshan west-side fault segment and 70-km-long Taigu fault segment, respectively. Among them, there exist 4 km and 8 km step regions. The surface rupture zone exhibits right-lateral features. The displacements of northern and central segments are respectively 6～7 m and the southern segment has the maximum displacement of 10 m. The single basin-boundary fault of Shanxi fault-depression system usually corresponds to M ≈ 7 earthquake, while this great earthquake (M = 8) broke through the obstacle between two basins. It shows that the surface rupture scale of great earthquake is changeable.     

2003年6月5日青岛崂山4.1级震群概述

2003年6月5日青岛崂山区发生4．1级震群。这次震群是青岛历史上少有的，青岛市普遍有感，造成了一定的社会影响。文章从地震影响、地质构造、历史及现代地震、序列特点及性质判定、地震应急等方面概述了本次震群。     

Study on the Relationship Between Recent Crustal Deformation and the Temporal-Spatial Distribution of Strong Earthquakes ( Ms ≥6.0) in the Sichuan-Yunnan Region

Analysis of deformation data measured across the faults, regional vertical deformation data and GPS measurements in the Sichuan-Yunnan region made since the 1980s permitted us to conclude that the crustal deformation in the region during this period of time was relatively weak and caused the occurrence of earthquakes (Ms≥6.0), which were not distributed along the major boundary active faults in the region after the 1981 I)awu Ms 6.9 earthquake and that the seismic activity is characterized by quasi-clockwise migration. Thus, it follows that earthquake prediction research should be focused on the central part of the Sichuan-Yunnan region in the coming years. Finally, a concept of temporal division of the region into active blocks is suggested and the preliminary result of the division is given in the paper.     

以铬为例试论环境自净资源的开发利用

环境自净能力是一种宝贵的资源，在我国国民经济高速发展的同时要保护好环境．应充分利用环境自净能力，以防为主，防重于治，在发展规划过程中就应考虑到环境的自净资源的利用和再生。地质地球化学场是决定环境自净能力的重要因素。自净能力可以通过添加催化剂等方式得以提高。对在伊利石存在条件下草酸还原Cr(Ⅵ)的动力学和机制进行研究，对环境自净资源的开发利用进行了讨论。     

Crust-Mantle Structures and Gold Enrichment Mechanism of Mantle Fluid System

Gold enrichment mechanism of ore-forming fluid is the essence of gold metallization.This paper summarizes the distinguishing symbols of mantle fluid and effect of crust-mantle structure on fluid movement. Fluid moving processes include osmosis, surge, gas-liquid alterna-tion and mutation of fluid speed. During fluid movement, gold will be enriched gradually. Final-ly, a layered circulatory system is illustrated in this paper.