On the influence of kriging parameters on the cartographic output—A study in mapping subglacial topography
On the influence of kriging parameters on the cartographic output—A study in mapping subglacial topography
复制标题
克里格参数对地图输出的影响——冰下地形测绘研究
DOI：
--
复制
发表时间：
1993
期刊：
影响因子：
--
通讯作者：
P. Holmlund
中科院分区：
文献类型：
--
作者：
U. Herzfeld;M. Eriksson;P. Holmlund
地质统计学提供了一套方法，概括为克里金法，用于分析有限的数据集，以描述地球的连续属性。克里金方法包括移动窗口最佳估计技术，它基于最小二乘原理，并使用空间结构函数，通常是变异函数。克里金技术的应用越来越广泛，普通克里金和通用克里金是最流行的。然而，最终映射或模型对输入的依赖性通常不被理解。在这里，我们将展示如何在克里金参数和邻域搜索的变化影响制图结果。通过冰川学研究阐明了这些原则。目的是根据几套无线电回声探测和热水钻探，绘制瑞典北方Kebnekaise地块Storglaciären的冰厚和冰下地形图。新的地图被提交。
Geostatistics provides a suite of methods, summarized as kriging, to analyze a finite data set to describe a continuous property of the Earth. Kriging methods consist of moving window optimum estimation techniques, which are based on a least-squares principle and use a spatial structure function, usually the variogram. Applications of kriging techniques have become increasingly wide-spread, with ordinary kriging and universal kriging being the most popular ones. The dependence of the final map or model on the input, however, is not generally understood. Herein we demonstrate how changes in the kriging parameters and the neighborhood search affect the cartographic result. Principles are illustrated through a glaciological study. The objective is to map ice thickness and subglacial topography of Storglaciären, Kebnekaise Massif, northern Sweden, from several sets of radio-echo soundings and hot water drillings. New maps are presented.