中国地－气系统净辐射的气候特征

根据ＥＲＢＥ和ＩＳＣＣＰ资料讨论了总云量等因子对地－气系统净辐射的影响，分析了地－气系统净辐射与其各分量及地表净辐射的相关联系。发现行星反射率和地气短波吸收辐射对地－气净辐射的影响最大，而云和纬度的作用主要通过该两因子变化表现出来，ＯＬＲ的作用则相对较弱。地－气净辐射与地表净辐射的相关性也较明显。文中还就地－气净辐射在全国的地理分布作了分析。各地区地－气净辐射的年变曲线均为简单的夏大冬小型，云等因素的影响主要造成最大值出现月份的推移。     

Bio-organic Geochemical Characteristics of Gold Deposits in Northwestern Guangxi and Their Metallogenetic Significance

The gold deposits of Triassic period in the northwestern Guangxi are all located in the marine, fine-grained ,fragmental rock series containing organic matter , i.e. the distribution districts of black rock series . The fine-grained gold deposits occur in organic matter-bearing C, D, E, or D, E divisions of the classical Bouma sequences. The evolution degree of organic matters through oil window stage reached the over-mature degree. Both the bio-sources of the organic matters and the distribution of gold in the organic matters disclose the close association between gold, living beings and organic matters. The thermal evolution of organic matters led to the gold to be activized , migrated and enriched , and finally formed gold deposits in the fault belt and crushed zone of black rock series.     

哈萨克斯坦下卡姆卡5-T号井前兆异常特征

介绍了哈萨克斯坦的下卡姆卡5-T井的水文地球化学环境,对其15年来的交换资料进行了初步的统计与分析。结果表明,在震中距300 km、400 km范围内,5、6级地震的异常项目比例可达71.4%、51.4%,而7级大震(或6级震群)远兆的异常比例则仅为7.2%,且5级、6级和7级地震(或6级震群)在异常时间、异常形态上各有其特点和差异,部分5级地震还存在异常叠加的现象。各个观测项目的映震能力存在一定的差异。     

Single-Column Model Intercomparison for a Stably Stratified Atmospheric Boundary Layer

The parameterization of the stably stratified atmospheric boundary layer is a difficult issue, having a significant impact on medium-range weather forecasts and climate integrations. To pursue this further, a moderately stratified Arctic case is simulated by nineteen single-column turbulence schemes. Statistics from a large-eddy simulation intercomparison made for the same case by eleven different models are used as a guiding reference. The single-column parameterizations include research and operational schemes from major forecast and climate research centres. Results from first-order schemes, a large number of turbulence kinetic energy closures, and other models were used. There is a large spread in the results; in general, the operational schemes mix over a deeper layer than the research schemes, and the turbulence kinetic energy and other higher-order closures give results closer to the statistics obtained from the large-eddy simulations. The sensitivities of the schemes to the parameters of their turbulence closures are partially explored.     

矿产勘查的理论基础及其方法的发展现状

矿产勘查工作综合性很强,所需要应用的知识非常广泛,不仅涉及到基础地质、成矿理论、勘查技术手段等地质学科知识,还要综合运用数学、化学、计算机等新方法、新技术。从板块构造、成矿背景以及成矿系列、成矿系统等方面介绍了其地质基础,并阐述了所用到的新方法、新理论的发展现状。     

青藏高原东缘龙门-锦屏造山带的崛起——大型拆离断层和挤出机制

龙门-锦屏山的东缘发育一系列逆冲断裂和飞来峰构造,逆冲作用使山体向东叠置在四川盆地之上。新的野外调查、显微构造分析和糜棱岩石英组构的EBSD测量表明,在龙门-锦屏山的前震旦纪变质杂岩体西缘(即青藏高原东缘)发育一条近NS向的大型韧性拆离断裂,被20Ma以来形成的NW—SE向鲜水河韧性走滑剪切带[1]左行错位80km。青藏高原东缘韧性拆离断裂中黑云母40Ar-39Ar测年获得112～120Ma的年龄,表明龙门-锦屏山的崛起可能与白垩纪开始的垂向挤出机制密切关联。结合四川前陆盆地的沉积及演化特征,认为晚三叠世时期羌塘/东昆仑/扬子陆块的碰撞形成松潘-甘孜造山带,晚三叠世—侏罗纪在其东南缘形成四川前陆盆地沉积;早白垩世龙门-锦屏山开始抬升,晚白垩世快速崛起,在四川前陆盆地沉积之上叠置白垩纪—第四纪再生前陆盆地的沉积。龙门-锦屏山的崛起与白垩纪以来扬子板块岩石圈对于松潘-甘孜地体的陆内俯冲作用有关,使位于中下地壳的变质基底岩石在挤出机制下隆起。     

关于公皋井地下流体数字化观测资料应用的思考与探讨

本文对朝阳地震台公皋井地下流体数字化资料进行了详细的分析,对如何将这些观测资料应用于地震预报进行了探讨。     

基于PSInSAR方法和ASAR数据监测天津地面沉降的试验研究

概述了PSInSAR方法的技术流程，阐述了定标ENVISAT ASAR数据对PS候选点（Persistent Scatterer Cadidate，PSC）筛选 的作用。研究表明：对ENVISAR ASAR 数据进行定标有助于筛选出更多的PS候选点；以定标得到的后向散射系数作为阈值，可以剔 除散射信号统计特性较稳定但散射强度低的像素点，从而避免可能由这些点引入的相位误差。在初步实现PSInSAR方法的基础上， 运用14景ENVISAT ASAR数据获得了天津地区的年均线性沉降速率，揭示的天津市地面沉降趋势与前人研究结果较为一致，获得的形 变速率值的准确性尚待数据量的增多而进一步提高。     

Reanalysis of western Pacific typhoons in 2004 with multi-satellite observations

Summary A pilot tropical cyclone reanalysis project was conducted to construct a reliable, high temporal and spatial resolution tropical cyclone dataset for selected western Pacific typhoons in summer 2004, with the application of the latest satellite observations and a 4-dimensional variational data assimilation method. Primary data used for the reanalysis include SSM/I rain rate, GOES-retrieved upper-level wind, QuikSCAT surface wind, Aqua AIRS/AMSU retrieved temperature and moisture profiles, and JTWC best track data. A regular reanalysis procedure was established and up to 12 western Pacific typhoons have been reanalyzed. The reanalysis period covers the entire life cycle of a tropical cyclone, from a few days prior to its genesis to its final decay stage. A preliminary analysis shows that the reanalysis product significantly improves typhoon intensity, structure, and track, compared to the NCEP operational final analysis. The validation of the TC structure against independent observations shows that the reanalysis reproduces well the asymmetric characteristics of TC rain bands and cloud bands. A further modeling experiment with an initial condition from the reanalysis product reveals a significant improvement in typhoon intensity forecast compared to a parallel experiment with an initial condition from the NCEP final analysis, which provides a further indication of quality of the tropical cyclone reanalysis. The reanalysis product and the raw observational data will soon be posted on the data server of the IPRC Asia-Pacific Data-Research Center () for public use.     

利用ERBE和ISCCP资料反演青藏高原地表短波吸收辐射场

利用ＥＲＢＥ和ＩＳＣＣＰ卫星辐射及总云量资料,结合青藏高原地面日射资料,讨论了并提出了该地区地表短波吸收气候反演方法,该法的似合精度较高,平均误差为９．８Ｗ．ｍ＾－２据此计算出７５°Ｅ－９５°豚２５°Ｅ－４０°Ｎ间２．５°＊２．５°经纬网格点和高原６３个站点的各月平均地面吸收辐射通量密度,给制出其在高原的分布图,揭示其基本特征。