江西茅排金矿床地质特征及找矿方向

茅排金矿是我省近年发现、探明的又一小—中型岩金矿床。震旦纪—早古生代火山沉积建造提供主要成矿物质,多期次构造活动为成矿主要的控制因素,同期岩浆活动也促进了矿化富集。可注意沿北东—北北东向韧－脆性断裂带旁侧,多期次构造－岩浆发育地段寻找类似金矿。     

上新世湖相纹泥及其环境信息与时间标尺记录

纹泥反映了湖相沉积物中特有的沉积韵律,是气候的季节变化和年际变化的产物。山西榆社张村地区上新世晚期的湖心相沉积中发育了极为完好的纹泥剖面。纹泥深浅相间形成清晰的纹理,分别代表夏秋和冬春。一深一浅组成一对,代表一年。纹泥层的单层厚度平均为0．12～0．25mm／条,薄者＜0．1mm／条,厚者可达0．3mm／条。暗色纹泥层的厚度大于浅色纹泥层。暗色纹泥的有机质含量丰富,木本植物孢粉占优势,同时CaO的含量低;浅色纹泥恰好相反。湖相纹泥具有建立高分辨率时间标尺和环境演化序列的特殊优越条件。     

长治水泥厂区域地震地质环境评价

长治水泥厂位于山西隆起区南部长治盆地, 长治盆地属中强潜在震原区。场地附近晋获断裂现代活动相对较弱, 晚更新后断裂基本停止活动, 对水泥厂场地无直接影响。     

高速公路路基性态反分析及沉降预报

本文用三元件粘弹性流变模型模拟路基土体的流变特性, 根据施工期实测资料, 采用粘弹性有限元和非线性二乘法阻尼优化方法, 反演路基土体的地质力学参数, 然后计算路面铺筑后的工后沉降, 编制了土体粘弹性有限元正反分析程序, 并对沪宁高速公路某路段进行了反分析计算, 得到了满意的结果。     

A statistical analysis of the power law and the logarithmic law using wind data from a 164 m tower

The wind speed distribution with height is analysed by using hourly data for a full year recorded at 6 levels of a 164 m tower at Nanjing. A statistical error analysis shows that power law and logarithmic law are best applicable when the wind is strong. For the height range from 16 to 164 m, the power law represents the actual speed distribution better than does the logarithmic law.     

应变-滑劈理的结构分析

应变-滑劈理(Strain-slip cleavage)一词,早在1886年提出。后来的研究者提出了相应的术语,诸如滑劈理(Slip cleavage)、皱劈理(Runzel cleavage)、剪劈理(shearcleavage)、锯齿形劈理(Crenulation cleavage)等。     

The numerical simulation on the PBL structure and its evolution over small-scale concave terrain

A high-resolution, nonhydrostatic, three-dimensional diagnostic PBL model over small-scale concave terrain was established in this paper. A two-dimensional prognostic model was developed based on the diagnostic model. The hydrostatic approximation was abandoned and the simple energy (E-ε) closure scheme was used in both mod-els. Using the two models, characteristics of PBL structure and its evolution were fully studied. The main characteris-tic of the PBL is the circulation, and it fairly affects the distribution of the pollutant in the pit.     

1873—1996年东亚冬,夏季风强度指数及其主要特征

用１８７３￣１９９６年／１９９７年资料,延长计算了东亚冬夏季风强度指数,研究了指数的年际及年代际变化的主要特征。指出该指数与我国的冬、夏季天气的年际变化、年代际变化关系密切。还指出,该指数与印度季风强度正相关,并且能解释季风的准两年振荡。     

对流层平流层气溶胶粒子的形态和化学组成

分析研究了１９９３年和１９９４年的８月、９月在香河地区上空采集的单个气溶胶粒子的形态及化学元素和化合物的组成。结果表明：１９９３年,在对流层大气中的气溶胶颗粒经常出现不规则形的粒子,可能是土壤粒子;而在平流层大气中的颗粒以具有“卫星”结构的硫酸粒子为主;硫酸铵粒子则经常出现在对流层的中、下部。香河地区上空颗粒物的化学元素组成比较复杂,单一化学元素组成的粒子较少,粒子主要含有Ｓｉ,Ｆｅ,Ａｌ和Ｓ等元素。气溶胶的化合物有硫酸盐、硅酸盐、硝酸盐和磷酸盐等     

SIMULATION OF MONTHLY CLIMATIC MEAN FIELD IN JANUARY AND JULY IN QINGHAI-XIZANG PLATEAU AND NORTHWESTERN CHINA

In this paper,we simulate the regional climate in summer and winter in northwestern part ofChina and the Qinghai-Xizang Plateau with regional climate model(MM4)nested with GFDLdata,and compare the simulated results with observed data and GFDL data.The results show thatthe regional model reproduces the regional climate systems,such as the high pressure on theplateau and the low pressure in the north of the plateau in winter,the warm-low pressure over theplateau and pressure ridge in south and north of the Qinghai-Xizang Plateau in summer.Theseregional climate features could not be distinguished by the GCM.The simulations of precipitationdistribution are reasonable.But differences between the simulated and observed precipitationvalues in some places are obvious.The precipitation in south of the Qinghai-Xizang Plateau isunderestimated,and in north of the Qinghai-Xizang Plateau,the precipitation is overestimated.The simulation of height field is better than temperature field.