Geomorphometric relief classification with the κ-median method in the Silesian Upland,southern Poland  

作　　者：Bartlomiej SZYPULA Malgorzata WIECZOREK 

机构地区：[1]Institute of Earth Sciences,Faculty of Natural Sciences,University of Silesia in Katowice,Sosnowiec 41-200,Poland [2]Department of Geoinformatics and Cartography,Faculty of Earth Sciences and Environment Management,University of Wroclaw,Wroclaw 50-137,Poland

出　　处：《Frontiers of Earth Science》2020年第1期152-170,共19页地球科学前沿（英文版）

摘　　要：The aim of this study is geomorphometric relief classification of a temperate latitude upland area in Central Europe.The Silesian Upland represents diversified structural relief which contains a fan-shaped configuration of long thresholds and wide erosion depressions.A 20 m × 20 m digital elevation model(DEM)provided input data for the analysis.The κ-median method was applied to examine morphometric variables of the relief.The aim of these activities was to identify clusters with objects of similar mathematical characteristics.These clusters were the basis of landform classification.Smaller numbers of clusters 4 transparently show hypsometric relationships.Key elements of the morphology of the area were clearly visible.The division into 6 clusters gives the best results-a detailed but clear image of the morphological diversity by distinguishing characteristic landform elements.The results for 8 clusters show significant background noise and are ambiguous,which makes them diflBcult to identify.Our research has confirmed that the κ-median method is a useful tool for landform classifications.We determined optimal parameters of this method(filtering window size,DEM resolution,number of clusters,aspect influence).

关 键 词：κ-median METHOD RELIEF CLASSIFICATIONS digital elevation model(DEM) GEOMORPHOMETRY Silesian UPLAND 

分 类 号：P931[天文地球—自然地理学]