XDD03A型雷电探测系统地图文件的优化设置

通过对XDD03A型雷电探测系统地图文件的进一步优化设置,增加相应炮位信息,使雷电收测数据显示更为直观,方便进行人影指挥作业。     

从浅水陆架走向深水陆坡--南海深水扇系统的研究

南海深水扇系统是近年来在南海海域的重大发现,证实自30Ma以来深水扇系统密集地分布在我国的近海海域内,并以其宏大的规模、典型的结构及巨大的勘探前景引起国内外的关注。深入展开深水扇系统的研究将是我国油气界与科学界的重大任务。近20年来,深水扇系统已成为国际石油产量与储量增长的主体,已经有60多个国家进行深水扇研究,并在国际学术界获得高度重视。据认为:“深水浊流及其有关储层在今后至少25年内将成为油气勘探开发研究的前缘”。南海珠江口盆地深水扇系统发育区域的地质条件与国际上已有重大油气发现的深水扇系统发育区有许多重要的相似。古珠江大河充足的物源供应,长期沉降的深水凹陷与海平面周期性下降是纵向上呈良好叠置状态的深水扇系统发育的要素;而立足于精度较好,保真程度较高的高分辨地震剖面是识别层序界面,识别低水位体系域,辨识陆架坡折带的技术关键,这就使研究领域从浅水陆架进入到深水陆坡。应当给深水扇系统赋予科学的定义;然而国际学术界对深水扇系统的沉积物性质、类型及预测方法技术存在争议。但是,毫无疑义的是,深水扇系统具有可识别性,它对油气的运移、聚集、隐蔽圈闭的形成以及指导油气勘探有着重要的意义。     

Timing of Magma Mixing in the Gangdisê Magmatic Belt during the India-Asia Collision: Zircon SHRIMP U-Pb Dating

1 IntroductionIt is widely accepted that the collision of India withEurasia proceeded from "soft" to "hard" phases between c.65-70 Ma and c. 45 Ma (Yin and Harrison, 2000; Flower etal., 2001; Dong, 2002; Mo et al., 2003; Zhou et al., 2004,and references therein). Obviously, it is important tounderstand what kind of process took place at the depth ofthe Tibetan Plateau and its timing and geodynamicenvironment responding to the India-Eurasia continentalcollision. The giant Gangdise granito…     

南极中山站地区太阳辐射的某些特征分析

本文根据1990年1～2月南极中山站的太阳辐射的首次观测数据,分析了该地区太阳分光辐射的变化特征,着重讨论了紫外辐射的变化特征和云对太阳辐射各分量的影响。结果表明,南极中山站地区晴天条件下可见光、近红外和紫外辐射占总辐射的42.2％、53.3％和4.5％;总云量的变化和云类的变化对太阳辐射各分量具有显著的影响。     

Experimental determination of the hydrothermal solubility of ReS2 and the Re–ReO2 buffer assemblage and transport of rhenium under supercritical conditions

To understand the aqueous species important for transport of rhenium under supercritical conditions, we conducted a series of solubility experiments on the Re–ReO₂ buffer assemblage and ReS₂. In these experiments, pH was buffered by the K–feldspar–muscovite–quartz assemblage; in sulfur-free systems was buffered by the Re–ReO₂ assemblage; and and in sulfur-containing systems were buffered by the magnetite–pyrite–pyrrhotite assemblage. Our experimental studies indicate that the species ReCl₄ ⁰ is dominant at 400°C in slightly acidic to near-neutral, and chloride-rich (total chloride concentrations ranging from 0.5 to 1.0 M) environments, and ReCl₃ ⁺ may predominate at 500°C in a solution with total chloride concentrations ranging from 0.5 to 1.5 M. The results also demonstrate that the solubility of ReS₂ is about two orders of magnitude less than that of ReO₂. This finding not only suggests that ReS₂ (or a ReS₂ component in molybdenite) is the solubility-controlling phase in sulfur-containing, reducing environments but also implies that a mixing process involving an oxidized, rhenium-containing solution and a solution with reduced sulfur is one of the most effective mechanisms for deposition of rhenium. In analogy with Re, TcS₂ may be the stable Tc-bearing phase in deep geological repositories of radioactive wastes.     

粘土矿物碱耗协同效应研究

选择蒙脱石,高岭石,伊利石等三种在储层中最党风的储层粘土矿物,两两分别按２Ｌ：０,１：１,０：２质量配比组成复配物系列;在３０℃、５０℃温度下按１：５,１：８,１：１０（ｇ／ｍｌ）固／液比分别与１．６％的Ｎａ２ＣＯ３深液反应８ｈ,３６０ｈ;监测反应前后碱液浓度的变化;计算了各条件下各自的绝对碱耗量。结果表明三种粘土矿物中蒙脱石耗碱最大,高蛉石的耗碱量与伊利石的接近;随着固／液比减小和温度升高,矿物     

面向对象的GIS水文水资源数据模型设计与实现

分析和总结了地理信息系统(GIS)在水文水资源应用中存在的问题与挑战。在ArcHydro数据模型框架的基础上,对面向对象的GIS水文水资源数据模型的结构与实现进行了深入研究与探讨。面向对象的GIS水文水资源数据模型能够很好地表达水文对象的空间位置、特征属性、时间属性以及对象间的拓扑关系,能完整地描述水文现象在地理空间的运动过程,并在江西省中部清丰山流域地理信息系统建设中应用。应用结果表明,面向对象的GIS水文水资源数据模型为设计水文空间数据库提供了一个通用的结构框架,有助于推动GIS在水文学研究与水资源管理的深入应用。     

The integrated spatial databases of GeoStar

GeoStar is the registered trademark of GIS software made by WTUSM in China.By means of the GeoStar,multi-scale images,DEMs,graphics and attributes integrated in very large seamless databases can be created,and the multi-dimensional dynamic visualization and information extraction are also available.This paper describes the fundamental characteristics of such huge integrated databases,for instance,the data models,database structures and the spatial index strategies.At last,the typical applications of GeoStar for a few pilot projects like the Shanghai CyberCity and the Guangdong provincial spatial data infrastructure (SDI) are illustrated and several concluding remarks are stressed.     

岩石磁组构在断裂变形性状与期次研究中的应用——以广西博白-合浦断裂为例

岩石磁化率椭球体的三个轴与应变椭球体的三个轴方向相平行,并具有一定的共构关系.变形岩石的磁组构参数P、T、F、L以及磁化率椭球体主张量方向等可以用来定量地表征岩石变形的性状及期次.本文通过实测和计算27个样品的磁组构参数,研究了博白-合浦断裂带的变形性状与期次,结果表明:博白-合浦断裂带大致经历了三期构造变形作用,不同时期具不同性质的构造变形.变形性状分别表现为韧性、韧-脆性及脆性变形,应变行为分别表现为平面、非平面和线性应变.