青海省温泉水库近场区活动断裂特征

在全面收集和总结前人工作资料的基础上，采用野外地震地质学研究方法，结合浅层地震勘探、断层气测量、开挖探槽、年代测样等丰富的第一手资料，综合分析总结了青海省格尔木市温泉水库近场区内活动断裂的特征及其古地震形变遗迹。特别是对穿越坝体的京昆仑活动断裂进行了更为详细的研究，总结出它是全新世以来经过多期强烈活动，水平位移达40～80m，平滑速率为7．5～9．5mm／a，是古地震遗迹十分状观的一条岩石围深大断裂。     

福建紫金山陆相火山岩型Cu－Au矿田区域地质地球化学异常结构模式

矿床模式是目前国内外的研究热点之一。各种各样的地质找矿模型与模式层出不穷，也建立了一些地球化学找矿模型。但是它们基本上是建立在矿床原生晕基础上的，以区域地球化学资料为基础建立的矿床或矿田区域地球化学异常模式尚属少见。本文以矿田为基础研究单元，以１：２０万区域化探扫面资料为基础，从矿田的区域地质背景特征和３９种元素的正、负区域地球化学异常分布规律出发，研究了成矿的区域地质环境和地球化学环境。发现成矿元素异常组合、指示元素异常组合和成矿环境元素异常组合的空间分布，在矿田上具有独特的结构特征，提出了异常结构模式的概念。进而总结出了紫金山矿田的区域地质地球化学异常结构模式。     

Construction and implementation of multisource spatial data management system of China''s coastal zone and offshore

To meet the increasing demand of national spatial database infrastructure construction and application, a concept model of China‘ s coastal zone scientific data platform is established based on the information feature analysis of a compound dataset, consisting of remote sensing data and conventional data. Based on this concept model, the detailed logical database structure and the storage strategy of remote sensing data and their metadata using ArcSDE are designed. The complicated technology of multisources data combination in this research is crucial to the future coastal zone and offshore database construction and practical running, which will provide intelligent information analysis and technological service for coastal zone and offshore investigation, research, development and management.     

Technical foundation research on high resolution remote sensing system of China’s coastal zone

1IntroductionCoastalzoneisthemostdynamicpartoftheearthsystem,andalsotheveryvulnerablere-gionofecosystembalance.Forthisreason,theChinesegovernmentattachesgreatimportancetotheproblemssuchaseco-environment,itsex-ploitationandutilization,aswellassustainabledevelopment.Asweknown,thelengthofcoast-lineofChinais18000kmintotal,andthenum-berofislandslargerthan500km2 isabout6500.Sincethemid-1980s,greateffortshavebeenmadebyChinatocarryoutregularnationwideinvestigationsofthetidal-flatresourcesofcoastalzo…     

台湾海峡中,北部棘皮动物的分布特点

本文根据1983年5月至1984年5月台湾海峡中、北部海洋综合调查资料,研究了该区棘皮动物的分布。结果表明,该区棘皮动物83种,初步鉴定到种的有61种;以亚热带种占优势,在组成上更接近于南海,与南海的共有种占62.7%;全区棘皮动物生物量6.18g/m~2,均较南海和东海的高;细颗粒沉积区中生物量较高,而粗颗粒沉积区种类多样性较高。     

水声信道高速率数据传输技术

本文介绍近年来水声信道高速率数所传输技术的一些研究进展，并结合本所研究的水声数据遥测，数字语音通讯和视频图像传输实验样机，讨论了具有抗多途干扰的声传输系统在调制信号设计及信号处理上所采用的关键技术。     

Seasonal and diurnal variations of COO in air: Initial observations from Pasadena, CA

The budget of atmospheric CO₂ is widely studied using records of temporal and spatial variations of concentrations, δ¹³C and δ¹⁸O values. However, the number and diversity of sources and sinks prevents these alone from fully constraining the budget. Molecules containing two rare isotopes can serve as additional tracers and potentially provide additional, independent, constraints. We present data documenting seasonal and diurnal variations of CO₂ having a mass of 47 u (mostly ¹³C¹⁸O¹⁶O) in air from Pasadena, CA. We report these data using the ‘mass 47 anomaly’ (Δ₄₇), which is defined as the deviation of R⁴⁷(=[47]/[44]) from that expected for a random distribution of isotopologues. Between February 2004 and December 2005, Δ₄₇ showed a seasonal pattern that differed significantly from that expected based on thermodynamic equilibrium. During the year 2004 Δ₄₇ was 0.76‰ in winter, increased to 0.87‰ in summer and gradually decreased through the autumn to 0.81‰ at the end of the year. Δ₄₇ then increased again through the winter and spring of 2005 to 0.97‰ in summer followed by a decrease to 0.88‰ at the end of 2005. The seasonal variations cannot be accounted for by variations in the relative contribution of local fossil fuel sources. Diurnal variations were the combined effect of both fuel combustion and respiration having Δ₄₇ values of 0.41‰ and ca. 0.77‰, respectively. The seasonal cycle may be interpreted as a competition between low Δ₄₇ values in respiration and higher Δ₄₇ values resulting from CO₂-water exchange in photosynthesis.     

基于地理数据库模型的流域数据模型设计

为实现水问题研究的信息化处理，必须做大量的基础性工作。解决现实对象抽象和信息化后的表达问题。基于物理联系，定义各种特征的连接关系，信息化前人研究成果的集成问题。分析了流域数据模型的特征、组成、结构，以及特征之间的相互关系，建立了流域数据模型，为我国流域数据模型的设计做了有益的探索。     

Changes of the Hailuogou Glacier, Mt. Gongga,China, against the Background of Global Warming in the Last Several Decades

Great change, associated with global warming, has occurred at the Hailuogou (海螺沟)has retreated 1 822 m in the past 106 years, with an annual mean retreat of 17.2 m, and the front elevation has risen by 300 m since 1823. Comparison of glacier variations and temperature fluctuations in China and the Northern Hemisphere, over the last 100 years, indicates that glacier retreat stages occurred during the warm phase, and vice versa. Mass balance records during 1959/60--2003/04 have shown that the glacier has suffered a constant mass loss of snow and ice. The accumulated mass balance, -10.83 m water equivalent, indicates an annual mean value of -0.24 m water equivalent. The correlation between the mass balance and temperature is significant, which also indicates that climate warming is the crucial cause of glacier loss.Local hydrological and climatic data demonstrate that runoff from the glacier has been increasing both seasonally and annually.The correlation analysis and trend analysis indicate that ice and snow melted water is the main cause of an increase in the runoff. As the climate has become warmer, changes in the glacier surface morphology have obviously occurred. These include a decrease in glacier thickness, enlargement of glacial caves, and reduction of the size of clefts on the glacier surface. The ablation period has lengthened and the ablation area has expanded. A variety of factors thus provide evidence that the Hailuogou glacier has suffered a rapid loss of snow and ice as a result of climatic warming.     

非数值型数据的数据库水印算法研究

分析了对非数值类型数据进行水印嵌入的特殊性,提出了基于非数值型数据水印的简单替换算法及其改进方法.为了减少水印嵌入对数据统计特性的改变,提出了一个统计特征控制算法,并设计了相关的实验,实验证明了算法的可用性和鲁棒性.