期刊
REMOTE SENSING
卷 13, 期 14, 页码 -出版社
MDPI
DOI: 10.3390/rs13142810
关键词
morphometry; DEM; LiDAR; ArcGIS; GIS toolbox; concave landforms; erosion-denudation valleys
类别
资金
- Faculty of Geographical and Geological Sciences, Adam Mickiewicz University in Poznan, Poland
The study developed a GIS toolbox for automatically extracting 26 morphometric characteristics of concave landforms, successfully applied to 21 erosion-denudation valleys in a glacial area, showing a 12% average level difference in volume parameter assessment.
The rapid development of remote sensing technology for obtaining high-resolution digital elevation models (DEMs) in recent years has made them more and more widely available and has allowed them to be used for morphometric assessment of concave landforms, such as valleys, gullies, glacial cirques, sinkholes, craters, and others. The aim of this study was to develop a geographic information systems (GIS) toolbox for the automatic extraction of 26 morphometric characteristics, which include the geometry, hypsometry, and volume of concave landforms. The Morphometry Assessment Tools (MAT) toolbox in the ArcGIS software was developed. The required input data are a digital elevation model and the form boundary as a vector layer. The method was successfully tested on an example of 21 erosion-denudation valleys located in the young glacial area of northwest Poland. Calculations were based on elevation data collected in the field and LiDAR data. The results obtained with the tool showed differences in the assessment of the volume parameter at the average level of 12%, when comparing the field data and LiDAR data. The algorithm can also be applied to other types of concave forms, as well as being based on other DEM data sources, which makes it a universal tool for morphometric evaluation.
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