摘要
多目标区域地球化学编图是科学表达区域土壤地球化学分布和特征的图示方法,大区域的编图一般可能涉及到对不同的工作区、不同实验室和不同时间的测试数据,以及不同景观条件和网度的表层、深层土壤元素数据或不同分度带的网格数据分别进行拼接合并,因此区域编图对原始数据的整理和网格化处理不可避免。而不同的数据整理方法及其计算参数所形成的结果是非常不同的,数据本身的特点也对编图具有很大的影响。为了真实客观地反映区域内元素的地球化学分布特征,数据整理和处理的方法及技术参数的选择是关键技术问题。作者就化探数据处理中常用的几种插值方法进行了对比评价,并分别从网格间距及搜索半径大小等方面做比较,提出了自己在编图中采用的数据处理方法及选用的技术参数。
The multi-purpose regional geochemical mapping is a scientific expression of the regional soil geochemical distribution and characteristics by means of graphical representation, in the case of large area mapping, the data specification often varies greatly, they may come from different survey areas, or tested in different laboratories at different times, the gridding data may be based on element data from both surface and deep soil under different landscape conditions or grid spacing, sometimes with different zone methods. Data bridging and merging is inevitable in the regional geochemical mapping, the original data needs to be processed and gridding is prerequisite. Different datum processing methods and their arithmetic parameters will produce very different results, the characteristics of the data itself also have a certain effect on the map compilation. Therefore, in order to objectively reflect geochemical distribution characteristics of elements in a region, data collation and processing methods, as well as technical parameters must be carefully studied and selected from the technical point of view. The authors have tentatively compared several interpolation methods commonly used in geochemical data processing, in terms of grid spacing and search radius, and proposed data processing methods and relevant technical parameters used by the authors in the map compilation.
出处
《地质调查与研究》
2012年第3期214-220,共7页
Geological Survey and Research
基金
国家地质调查项目:海河流域多目标区域地球化学系列图编制与出版(1212010911010)
关键词
多目标区域地球化学
网格化
插值方法
网格间距
搜索半径
multi-purpose regional geochemical survey
gridding
interpolation method
grid space
searching radius
