应用遥感影像预测皖南细微浸染型金矿的认识     

周栗 《安徽地质》1997,(1)

本文详细论述了安徽省细微浸染型金矿成矿带的地质背景，利用遥感影像对其地质背景进行了解译，结合地质、物化探等多种手段，提出了２个细微浸染型金矿的成矿远景区  相似文献   

大尺度山地上空臭氧亏损及其变化趋势     

邹捍  郜永祺 《山地学报》1997,(4)

通过对卫星资料的分析,揭示了全球大尺度山地上空有大气臭氧亏损,其极大值出现在春季或初夏,线性回归分析表明:在1979～1991年中,全球大尺度山地上空的臭氧总量呈下降趋势。  相似文献   

Near-source characterization of the seismic wavefield radiated from quarry blasts     

Sharon K. Reamer  Klaus-G. Hinzen  Brian W. Stump 《Geophysical Journal International》1992,110(3):435-450

  相似文献   

A ROBUST PLS PROCEDURE   总被引：1，自引：0，他引：1  

I.N.WAKELING  H.J.H.MACFIE 《地理学报(英文版)》1992,(4)

A robust partial least squares(PLS)regression algorithm is developed.This is achieved by substitutionof the univariate regression steps in the iterative PLS2 algorithm by a robust alternative.The anglebetween loading vectors from both perturbed and unperturbed solutions is used as a measure ofrobustness.By means of a perturbation study on a structure-activity data set,it is demonstrated thatthe stability of the robust method is superior to standard PLS.  相似文献   

数字近景摄影测量系统PV-1的几何精度     

徐青 《测绘学院学报》1991,(2)

本文系统地介绍了所建立的一个数字近景摄影测量系统PV—1的检校方法,并得出了该系统的点定位精度。初步实验表明。运用直接线性变换法进行点定位精度评定,物方坐标的中误差为:M_x=0.247mm,M_y=0.158mm,M_z=0.272mm,象方坐标的中误差为0.2像元,相对精度为1/6000。  相似文献   

农业系统地图在区域经济布局及规划中的应用     

祝国瑞  张根寿 《武汉大学学报(信息科学版)》1991,(2)

本文探讨了利用农业系统地图直接对区域经济布局及发展作出规划与预测,并将分析和解译地图的结果直接用于指导生产实践的可行性。结果表明,地图就是客观实际的科学模拟,可以揭示出自然与经济、经济系统内部的规律,是研究农业生产合理的规划和布局,发展区域经济和科学预测的极为有效的科学工具。  相似文献   

RESPONSES OF SUMMER RAINFALL OVER CHINA TO ANOMALIES OF SEA SURFACE TEMPERATURE IN THE NORTH PACIFIC          下载免费PDF全文

Huang Jiayou 《Acta Meteorologica Sinica》1991,5(1):79-89

The temporal and spatial responses of summer(June—August)rainfall (SR) over China to anomalies of sum-mer sea surface temperature (SST) in the North Pacific is investigated by using regression analysis and prin-cipal component analysis in this paper.The results show that the responses of SR over China to SST anomalyin the eastern North Pacific in middle latitudes are more sensitive than the others.The strong response areasof SR to SST are generally located in the Changjiang River valley,west:rn North of China,and South China.The spatial pattern of responses of SR to SST manifests in the spatial pattern of the first principal componentnamely,the domain shape with negative-positive-negative anomalies along south-north direction,thus the signof anomalies in the Changjiang River valley is contrary to that of its North or South.  相似文献   

STUDY ON APPLICATIONS OF C-BAND DUAL LINEAR POLARIZATION RADAR IN METEOROLOGY   总被引：4，自引：0，他引：4       下载免费PDF全文

徐宝祥  王致君  蔡启铭  刘黎平  张鸿发  楚荣忠 《Acta Meteorologica Sinica》1991,(3)

Theoretical study and development of a dual linear polarization weather radar in China are briefly presented.Also discussed are the potential uses of the new radar system in improving the accuracy of areal rainfall measure-ments and analysing the spacial structure of storms and distribution of hydrometecrs in clouds based on theradar observational data from the field experimcnts during the summers of 1987—1989. The results indicatethat a C-band dual polarization weather radar, after considering the microwave attenuation correction, may beemployed to quantitatively measure rainfall and to monitor heavy rain and flood events and becomes an impor-rant means to study storm structure.  相似文献   

全球定常波对大尺度地形的线性响应     

田永祥  Duncan  C.N.  雷兆崇 《高原气象》1991,(3)

本文应用一个定常态线性原始方程三维谱模式模拟出全球200 hPa定常波的结构特征。同时还考察了模式大气对大尺度地形的线性响应。  相似文献   

大洋玄武质岩石元素间的线性关系及其应用     

万渝生 《吉林大学学报(地球科学版)》1991,(2)

批式熔融是大洋玄武质岩石形成的主要机制之一。本文建立了批式熔融作用中元素间的线性关系模型,并应用于北秦岭宽坪群变玄武质岩石化学分析资料的研究,对变异图解、相关矩阵、源区成分计算和估计等问题作了讨论。给出了一些具体应用的方法。  相似文献