中国地区云对地气系统太阳短波吸收辐射强迫的气候研究

本文利用地球辐射平衡试验（ＥＲＢＥ）和国际卫星云气候计划（ＩＳＣＣＰ）提供的总云量、行星反射率资料,计算并分析了我国年、月平均云对地气系统太阳短波吸收辐射的强迫及其敏感性系数,揭示了它们之间的关系,最后绘制了地气系统短波辐射云强迫的全国分布图。结果表明：我国地气系统短波辐射云强迫及其敏感性系数都与总云量有较好的非线性相关,呈幂指数形式,且季节变化明显。短波辐射云强迫的地理分布与总量配合较好。     

基于本体与LDAP的空间信息网格资源管理机制

为了在网格计算中满足空间信息系统在语义方面的特殊要求,克服传统网格研究的数据格式很少涉及信息资源的语义内容的缺陷,把本体和轻量目录访问协议结合到一起,建立了基于语义的空间信息网格资源管理系统,使多源异构的地理信息系统组成了一个虚拟统一的逻辑组织,有效地实现了基于语义的空间信息系统集成和互操作。     

富P过铝质岩浆体系的研究现状及存在的问题

高度演化的富P过铝质岩浆体系,具有鲜明的、不同于其他体系的地球化学行为.富P过铝质熔体以富P,高ASI,贫Fe、Mg、Ca,强烈亏损REE、Th、Y以及具有W、Sn、Nb、Ta等金属的矿化为特征.富P过铝质岩浆体系中的碱性长石为富P长石,长石中P可以有效地指示过铝质岩浆体系的演化历程;在岩浆演化的晚期,P与Li具强的亲和性,形成锂辉石-磷铝锂石-羟磷铝锂石的组合.已有的实验研究揭示,P能降低简单花岗岩的液相线和固相线温度、粘度以及增加H2O在熔体中的溶解度.然而,这一体系还存在许多问题亟待研究,P能否促进过铝质岩浆的液态不混溶,能否促使等价不相容元素在过铝质岩浆演化过程中的分异,是否在稀有金属成矿过程中起作用等都是值得关注的问题.     

Regional Fault Systems of Qaidam Basin and Adjacent Orogenic Belts

The purpose of this paper is to analyze the regional fault systems of Qaidam basin and ad-jacent orogenic belts. Field investigation and seismic interpretation indicate that five regional fault sys-tans occurred in the Qaidam and adjacent nment.qin belts, controlling the development and evolution of the Qaidam basin. These fault systems are: (1)north Qaidam-Qilian Mountain fault system; (2) south Qaidam-East Kunhm Mountain fault system;（3）Altun strike-slip fault system; (4) Elashan strike-slip fault system, and (5) Gansen-Xiaochaidan fault system. It is indicated that the fault systems controlled the orientation of the Qaidam basin, the formation and distribution of secondary faults within the basin,the migration of depocenters and the distribution of hydrocarbon accmnulation belt.     

近岸海水质量量化方法及分类评价

近岸海域是陆地、海洋和大气之间各种过程相互作用最活跃的界面[1],沿海100km以内区域聚积着约60%的世界人口[2],其环境质量强烈受人类活动影响.对近岸海域进行水质环境管理,应依据海水物理、化学和生物学性质对海水进行分类评价[3,4].     

SCM链路中激光器对副载波调制频率的响应特性研究

着重讨论激光器对内调制模拟信号频率的响应特性，定量分析光子密度的幅值及相位对模拟激励信号频率的依赖关系，给出特征参数和曲线，供模拟系统设计者参考。     

基于移动端的“智慧城市与地理国情一张图系统”设计及其应用

系统把智慧城市建设与地理国情应用完美结合,形成时空一体、二三维一体的集成多源数据的一张图;开发IPAD版系统,把PC端的数据处理向移动端适时展现。系统具有国情普查数据的展示和分析、专题地图展示、电子地图、三维模型展示、轨迹记录,以及其他GIS基本功能。在屏幕上任意点取闭合图形,就会实时显示选定图形范围内的国情数据及统计分析数据。辅助决策者又好又快地进行科学决策。     

利用偏光显微镜反射光系统观察黑色生油岩电子探针薄片中的生烃母质特征

鄂尔多斯盆地上三叠统延长组长7油层组的黑色泥岩、油页岩等黑色生油岩薄片中的生烃母质,因黑色石油、沥青等黑色有机质的覆盖或不透明,导致其在偏光显微镜透射光系统下观察常局部或整体呈现为黑色。因此,建立一种黑色生油岩薄片中生烃母质有效观察的方法,对致密油、页岩油的生烃研究具有重要的理论和实际意义。本文提出了一种利用电子探针薄片和偏光显微镜的反射光系统观察黑色生油岩中生烃母质特征的方法。该方法能够克服黑色生油岩薄片中生烃母质因被黑色有机质覆盖或不透明,而在偏光显微镜的透射光系统下局部或整体呈黑色的弊端,能够对生烃母质的大小、形态、结构、分布和物质成分等特征进行整体且清晰的观察。实践表明,本文提出的利用偏光显微镜反射光系统观察黑色生油岩电子探针薄片中生烃母质特征的方法,简单有效,易在致密油、页岩油的生烃研究领域推广使用。     

Evolution of the Extensional Rifted Yunnan-Guizhou-Guangxi Oceanic Basin During the Late Hercynian to Middle Indosinian Stage

On the basis of exhaustive researches on the facies sequences and depositlonal evolutionary process of various depositional systems, the genetic stratigraphic framework of the extensional rifted oceanic basin, which has undergone strong structural destruction, has been reconstructed by means of dynamic genetic stratigraphic analysis. Five depositional episodes have been distinguished from various isochronous stratigraphic boundaries and stratigraphic sequences with the three-dimensional structure of each depositional episode analysed in detail. The tectonic paleogeographic environment corresponding to different stages of each depositional episode has been reconstructed for individual depositional system tracts. And the evolution history of this rifted basin has been divided into four stages' initial rifting and oceanization of continental crust, stretching and spreading of the basin, subduction and basin differentiation, and convergence and collision. A NNE-trending intracontinental soft collision sutur     

Subsurface Water Masses in the Central North Pacific Transition Region: The Repeat Section along the 18° Meridian

A repeat hydrographic section has been maintained over two decades along the 180° meridian across the subarctic-subtropical transition region. The section is naturally divided into at least three distinct zones. In the Subarctic Zone north of 46°N, the permanent halocline dominates the density stratification, supporting a subsurface temperature minimum (STM). The Subarctic Frontal Zone (SFZ) between 42°–46°N is the region where the subarctic halocline outcrops. To the south is the Subtropical Zone, where the permanent thermocline dominates the density stratification, containing a pycnostad of North Pacific Central Mode Water (CMW). The STM water colder than 4°C in the Subarctic Zone is originated in the winter mixed layer of the Bering Sea. The temporal variation of its core temperature lags 12–16 months behind the variations of both the winter sea surface temperature (SST) and the summer STM temperature in the Bering Sea, suggesting that the thermal anomalies imposed on the STM water by wintertime air-sea interaction in the Bering Sea spread over the western subarctic gyre, reaching the 180° meridian within a year or so. The CMW in this section originates in the winter mixed layer near the northern edge of the Subtropical Zone between 160°E and 180°. The CMW properties changed abruptly from 1988 to 1989; its temperature and salinity increased and its potential density decreased. It is argued that these changes were caused by the climate regime shift in 1988/1989 characterized by weakening of the Aleutian Low and the westerlies and increase in the SST in the subarctic-subtropical transition region. This revised version was published online in August 2006 with corrections to the Cover Date.