高分辨区域输送模式中不同输送格式的对比试验

本文对两种输送格式在理论试验的基础上，引入19层高分辨区域输送模式EM3，由中尺度模式（MM4)提供实例输送风场，积分至13、18、30、50、70小时，作分析和对比数值试验。采用的两种格式是:二阶动量矩守恒的Prather格式（以下简称为SOM)及通量订正的Smolar格式。数值试验结果表明，高精度的SOM格式使数值扩散减小一个量级， 使输送物质（SO#-[2])中心浓度比Smolar格式增大3～4倍， 采用SOM格式还明显改进了浓度中心水平平均运动轨迹的模拟精度，选择高精度的平流格式是改进模拟结果的重要途径。     

场对场预报模型及其对降水的预报试验

用经验正交函数对预报因子场和预报对象场分别进行分解，将正交展开的时间系数作为预报因子和预报对象，提出了一种场对场预报模型，该模型考虑了预报系统的时变性，并利用云南５月份的雨量资料进行了预报试验。结果表明，用这种模型作区域性降水预报有一定的优越性。     

Induced seismicity at wujiangdu reservoir,China: a case induced in the karst area

To date 19 cases of reservoir-induced seismicity have been acknowledged in China and 15 of them are associated with karst. The Wujiangdu case is a typical one induced in the karst area. The dam with a height of 165 m is the highest built in a karst area in China. Seismic activity has been successively induced in five reservoir segments seven months after the impoundment in 1979. A temporary seismic network consisting of 8 stations was set up in one of the segments some 40 km upstream from the dam. The results indicate that epicenters were distributed along the immediate banks, composed of karstified carbonate, and focal depths were only several hundred meters. Most of the focal mechanisms were of thrust and normal faulting. It is suggested that karst may be an important factor in inducing seismicity. It can provide an hydraulic connection to change the saturation and pressure and also weak planes for dislocation to induce seismicity.     

StudyofCurieisothermalsurfaceinSichuanBasinandtheseismicareaonitswesternmar┐gin

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农田尺度土壤水分的监测

根据田间试验实测资料分析了田间土壤水分的空间变化特征和时间动态变化,探索了监测农田水分变化时如何确定其合理的取样数目,讨论了农田尺度的土壤水分应如何监测,为节水灌溉,提高田间用水管理水平提供科学依据。     

冀东地区油气微渗漏地植物的遥感基础研究

本文通过已知含油区及背景区地植物及地表土壤多种微量金属元素和吸附烃的综合分析,并利用遥感资料与物探资料作复合评价,讨论了冀东油气微渗漏地区的遥感植物地球化学标志。     

Numerical study on dry deposition processes in canopy layer

A coupling model between the canopy layer (CL) and atmospheric boundary layer (ABL) for the study of dry deposition velocity is developed. The model consists of six parts: chemical species conservation equation including absorptive factor; the species uptake action including detailed vertical variation of absorptive element in CL; momen-tum exchange in CL which is represented by a first-order closure momentum equation with an additional larger-scale diffusive term; momentum exchange in ABL which is described by a complete set of the ABL turbulent statistic parameters; absorptivity (or solubility or reflection) at the surface including effects of the physical and chemi-cal characters of the species, land type, seasonal and diurnal variations of the meteorological variables; and deposition velocity derived by distributions of the species with height in CL. Variational rules of the concentration and deposi-tion velocity with both height and time are simulated with the model for both corn and forest canopies. Results pre-dicted with the bulk deposition velocity derived in the paper consist well with experimental data.     

抚顺西露天矿北帮变形有限元分析

本文应用有限单元法对抚顺西露天矿北帮边坡及地表变形进行分析.确定了在地下开采当时、露天开采当时及不同充填类型地下采场当构造地应力降低时边坡及地表的变形特征.给出了不同情况下的位移场、应力场及塑性区的分布.并对不同情况下的变形、应力分布及塑性区特征进行了对比研究.     

安徽东至查册桥矿区金矿地质特征及找矿潜力分析

查册桥矿区位于江南过渡带，包括牛头高家金矿床、程檀金矿床、路源金矿点和东边金矿化点、杨梅尖金矿点.其中牛头高家金矿是安徽省首次发现的具一定规模的红土型金矿.研究区主体位于东至断裂与高坦断裂带交汇处及其两侧，三岗尖-杨美桥背斜核部及北翼.区内存在多个重要的赋矿层位，主要包括南华系休宁组、南沱组，震旦系蓝田组，寒武系黄柏岭组、杨柳岗组，奥陶系仑山组、东至组.高坦断裂带、兰程畈断裂带、奥陶系/志留系间的推覆-滑覆断层界面均是重要的控岩控矿构造，区内岩浆岩主要受其控制，物化探异常也主要沿其分布.通过对矿床地质特征总结，并结合前人研究成果，对找矿潜力进行分析，认为区内具有寻找低温热液型-叠改型、层控夕卡岩型、岩浆热液脉型金、铜、钨、钼、银、铅锌等矿化的潜力.