Drumlins are common elements of glaciated landscapes which can be easily identied by their distinct morphometric characteristics including shape, length/width ratio, elongation ratio, and uniform direction. To date, most researchers have mapped drumlins by tracing contours on maps, or through on-screen digitization directly on top of hillshaded digital elevation models (DEMs). e present study attempts to test object-oriented classication method available through Deniens Developer (V.7) to map drumlins. e Chautauqua drumlin eld in Pennsylvania and upstate New York, USA has been chosen as a study area. As it is huge (about 2500 sq. km.), small test areas have been selected for initial testing of the method. e manually digitized polygons were imported into Deniens Developer as thematic vector layer and object-oriented classication was performed. Drumlin parameters were then extracted from polygons and used to compare the manual digitization method with automated object-oriented method. Statistically, there was high agreement between drumlin parameters extracted by the two dierent methods indicating that Deniens has the ability to extract the appropriate data in a meaningful way.

Author Name: Dr. Kakoli Saha

URL: View PDF

Keywords: Drumlin, Glacial Debris, DEM, Definiens Developer, DRG, Arc-GIS

ISSN: 2249-3921

EISSN: 2249-4316

EOI/DOI:

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