重力数据处理中几种断裂构造识别方法的组合应用     

郇恒飞  郭灿文  孙守亮  李永飞  高铁  王洋 《地质与资源》1992,29(5):467-475

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广义球谐函数定积分计算方法的改进   总被引：1，自引：0，他引：1  

吴星张传定  赵德军宋明魁 《测绘学院学报》2005,22(1):17-20

运用球谐函数定积分的基本递推公式，推导了在重力场球谐综合与球谐分析中出现的广义球谐函数定积分的计算公式；给出了其适用于超高阶次的改良型递推公式。数值试验表明，该改良公式具有较高的计算精度和计算速度，解决了超高阶次广义球谐函数定积分计算的溢出问题，拓展了这类定积分的计算公式。他们的数值实现为利用位模型计算高分辨率扰动重力场元格网平均值、重力场球谐综合分析等奠定了基础。  相似文献   

Optimal Design of a Gravity Survey Network and its Application to Delineate the Jabera-Damoh Structure in the Vindhyan Basin,Central India     

Ravi Prakash Srivastava  Nimisha Vedanti  V. P. Dimri 《Pure and Applied Geophysics》2007,164(10):2009-2022

Fractal dimension analysis was carried out for optimal designing of 2-D gravity survey network and to determine an optimum range of gridding interval to generate least aliased Bouguer anomaly maps. As a test case, this method has been successfully applied to the Jabera-Damoh region of the Vindhyan Basin, which is considered as a potential hydrocarbon bearing area. In particular, we aim to delineate accurately the lateral extent of a possible hydrocarbon bearing structure. To achieve this aim, fractal dimension of survey network was computed using 2-D distributions of observation points in the planning phase of the survey so that the optimum station spacing for gravity survey can be obtained. A range of optimum gridding interval for the gravity data set was suggested using the box-counting method of fractal dimension determination. Bouguer anomaly maps of the region are prepared utilizing the optimum gridding interval. For the first time, these anomaly maps clearly outline the gravity evidence of an anomalous rifted structure, which is bounded by parallel faults on either side. This structure is interpreted as a favorable basin for the occurrence of hydrocarbons. Another finding of this study has been the delineation of an apparently small ridge-like structure running east-west, dividing this basin in two parts. A subsurface geological model along a profile across the Jabera structure has also been presented.  相似文献   

网格化数据管理在地图搜索服务应用中的研究     

曲鑫  姜丽丽  丁明柱  殷福忠 《测绘与空间地理信息》2007,30(6):59-62

研究在地图搜索服务网站运行中采用网格数据管理服务模式的技术路线和实现方法。生产网格数据,搭建示范系统,为后继地图搜索服务网站的建设提供了开发建设的模式,也为网站的信息数据更新、维护提供了一个良好的运行方式。  相似文献   

网格化数据管理在地图搜索服务应用中的研究     

曲鑫姜丽丽  丁明柱殷福忠 《东北测绘》2007,30(6):59-62

研究在地图搜索服务网站运行中采用网格数据管理服务模式的技术路线和实现方法。生产网格数据。搭建示范系统，为后继地图搜孝服务网站的建设提供了开发建设的模式，也为网站的信息数据更新、维护提供了一个良好的运行方式。  相似文献   

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孙文  吴晓平  王庆宾  李新星  朱志大 《大地测量与地球动力学》2015,35(2):342-345

?о?3????????????????????Kriging????????????????????????????????????????????3????????????????μ??????????????????????3????????????????????????????????仯??????????????????Kriging????????????CoKriging?????Shepard????  相似文献   

Gridding cropland data reconstruction over the agricultural region of China in 1820     

LIN Shanshan  ZHENG Jingyun  HE Fanneng 《地理学报》2009,19(1):36-48

Recent studies have demonstrated the importance of LUCC change with climate and ecosystem simulation, but the result could only be determined precisely if a high-resolution underlying land cover map is used. While the efforts based satellites have provided a good baseline for present land cover, what the next advancement in the research about LUCC change required is the development of reconstruction of historical LUCC change, especially spatially-explicit historical dataset. Being different from other similar studies, this study is based on the analysis of historical land use patterns in the traditional cultivated region of China. Taking no account of the less important factors, altitude, slope and population patterns are selected as the major drivers of reclamation in ancient China, and used to design the HCGM (Historical Cropland Gridding Model, at a 60 km×60 km resolution), which is an empirical model for allocating the historical cropland inventory data spatially to grid cells in each political unit. Then we use this model to reconstruct cropland distribution of the study area in 1820, and verify the result by prefectural cropland data of 1820, which is from the historical documents. The statistical analyzing result shows that the model can simulate the patterns of the cropland distribution in the historical period in the traditional cultivated region efficiently.  相似文献   

数据网格化的局部搜索算法   总被引：1，自引：0，他引：1  

贾雨  张嘉友  田润平 《物探化探计算技术》2000,22(3):271-273

作者在本文中提出一种数据网格化的快速算法－局部搜索算法。该算法利用目前计算机编程环境提供了动态存储分配功能,首先将需网格化的所有数据划分至各个子块中,网格化时在一个或几个子块中搜索网格点的相邻点,而不是对所有数据进行探索,提高了数据网格化的搜索效率,对于数据量较大的网格化问题可极大地提高效率。经实际应用证明,该方法稳定、可靠,是一种值得推广应用的快速算法。  相似文献   

A simple data transformation technique for pre-processing survey data at embayed beaches     

Mitchell D. Harley  Ian L. Turner 《Coastal Engineering》2008

This note explains a technique used for pre-processing three-dimensional survey data obtained at embayed beaches that exhibit distinct alongshore curvature. Using a log-spiral function fitted to the beach planform, the data is transformed from Cartesian into an alternative alongshore–cross-shore coordinate system. When undergoing this transformation, the curvature in the survey data is effectively removed. This greatly simplifies the application of standard interpolation methods, and in this transformed coordinate system the alongshore and cross-shore directions are now explicitly defined. Using a property unique to the log-spiral, the interpolated data is readily transformed back into the original Cartesian coordinate system for further analyses and interpretation. The practical application and advantages of this technique are then demonstrated using survey data from two embayed beaches in south-eastern Australia.  相似文献   

富钴结壳资源远景区圈定方法   总被引：2，自引：0，他引：2  

杨克红  初凤友  马维林  刘春秋  雷吉江 《海洋地质与第四纪地质》2007,27(6):125-130

提出了4种不同的富钴结壳资源远景区圈定方法,即水深法、工程间距外推法、网格微分法和综合法,对比了它们的优缺点,对同一研究区运用不同的方法圈定了不同的资源远景区并进行了资源评价,结果表明:这几种方法是层层递进、相辅相成的,水深法和工程间距外推法可以给出研究区资源远景的大致范围,网格微分法是圈定较为精确资源远景区的基础,但是,加入地质规律的综合法可以提供更接近真实情况的资源远景区。不同的方法适合不同的勘探程度和不同研究目的,并且有不同的精度。  相似文献