Geomorphometric mapping of Zagros Ranges at regional scale

Miliaresis, GCh

dc.contributor.author	Miliaresis, GCh	en
dc.date.accessioned	2014-03-01T01:16:36Z
dc.date.available	2014-03-01T01:16:36Z
dc.date.issued	2001	en
dc.identifier.issn	0098-3004	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/14115
dc.subject	Digital terrain model	en
dc.subject	GTOPO30	en
dc.subject	Iran	en
dc.subject	Landscape characterization	en
dc.subject	Terrain feature extraction	en
dc.subject.classification	Computer Science, Interdisciplinary Applications	en
dc.subject.classification	Geosciences, Multidisciplinary	en
dc.subject.other	Algorithms	en
dc.subject.other	Geomorphology	en
dc.subject.other	Image segmentation	en
dc.subject.other	Stair-step topography	en
dc.subject.other	Mapping	en
dc.subject.other	digital terrain model	en
dc.subject.other	geomorphology	en
dc.subject.other	morphometry	en
dc.subject.other	Iran	en
dc.title	Geomorphometric mapping of Zagros Ranges at regional scale	en
heal.type	journalArticle	en
heal.identifier.primary	10.1016/S0098-3004(00)00168-0	en
heal.identifier.secondary	http://dx.doi.org/10.1016/S0098-3004(00)00168-0	en
heal.language	English	en
heal.publicationDate	2001	en
heal.abstract	A method for regional-scale geomorphometric mapping that is useful for morphotectonic studies is presented for the Zagros Ranges in Iran. The DEM-to-Mount transformation, a region-growing algorithm for terrain segmentation is implemented. To cope with the specific conditions in that compressional-morphotectonic context, the transformation was modified: region growing was not allowed for valley pixels: ridge pixels were used as seeds; and the growing criterion was based on gradient. The landscape was decomposed to two terrain classes (mount and non-mount) and to isolated mountain objects that were numerically represented on the basis of appropriate attributes (mean and maximum elevation. gradient, hypsometric integral, size). The domain of the attributes was sliced to intervals on the basis of geomorphometric criteria and their spatial occurrence. Finally, the landscape was characterized on the basis of mountain morphometry From the spatial distribution of the classes. The objects greatest in size were observed in the NW. Three distinct regions with respect to the mean elevation were spatially distributed in increasing mean elevation from SE to NW, producing stair-step topography at a regional scale. In the NW, the degree of dissection was less and objects with the highest gradient were observed. These observations suggest that at a regional scale the main NW topographic units have not been significantly downcut towards sea level, for a pattern of small isolated objects with lower mean elevation, gradient and hypsometric integral to be formed as those observed in the SE. (C) 2001 Elsevier Science Lid. All rights reserved.	en
heal.publisher	PERGAMON-ELSEVIER SCIENCE LTD	en
heal.journalName	Computers and Geosciences	en
dc.identifier.doi	10.1016/S0098-3004(00)00168-0	en
dc.identifier.isi	ISI:000169307900003	en
dc.identifier.volume	27	en
dc.identifier.issue	7	en
dc.identifier.spage	775	en
dc.identifier.epage	786	en