期刊
COMPUTERS & GEOSCIENCES
卷 35, 期 6, 页码 1214-1223出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.cageo.2008.06.006
关键词
Hypsometric curve; GIS extension; Active tectonics; Sierra Nevada; Betic Cordillera
资金
- Spanish Ministry of Education [TOPO-IBERIA CONSOLIDER-INGENIO CSD2006-00041]
- [BTE2003-01699]
- [CGL2004-03333/BTE]
We present the GIS extension CalHypso to automatically extract multiple hypsometric curves from digital elevation models (DEM). This extension is programmed in Visual Basic 6 and uses the ArcObjects architecture of ArcGIS. It employs a new and easy methodology to extract the hypsometric curve by using the integer data-model properties of ArcGIS and summations algorithms. This provides an optimal integration within the program environment, allowing the representation and comparison of curves directly within the GIS main program. The CalHypso extension can also calculate the main statistics related to the hypsometric curve by applying polynomial fits. We have tested this tool in several basins of the eastern border of the Sierra-Nevada dome in the Betic Cordillera (SE Spain), showing important differences in the north- and south-slope hypsometric Curves. These variations are probably related to the tectonically controlled drainage evolution of the Southern border of Sierra Nevada. An eastward decrease in tectonic-driven erosion is also suggested by the hypsometric curves analyzed. (C) 2008 Elsevier Ltd. All rights reserved.
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