Volume No. 5 Issue No.: 1 Page No.: 60-67 July-September 2010

 

COMPARATIVE STUDY OF HYDRO-MORPHOLOG-ICAL PARAMETERS EXTRACTED FROM DIGITAL ELEVATION MODEL (DEM) GENERATED FROM STEREO PAIR OF CARTOSAT- I SATELLITE DATA, SHUTTLE RADAR TOPOGRAPHIC MISSION (SRTM) AND GTOPO

 

Vishal Arora1 and Parmita Bose*2

1. Gujarat State Disaster Management Authority (GSDMA), Gandhinagar, (INDIA)
2. Center of Remote Sensing and GIS, SOS Earth Science, Jiwaji University, Gwalior, (INDIA)

 

Received on : February 13, 2010

 

ABSTRACT

 

Hydro-morphologic parameters such as the flow direction, flow accumulation and basin boundary are the most important for hydrological study of an area. Digital Elevation Model (DEM) is an important tool for delineation of hydro-morphologic parameters. Recent days there are various sources from where the Digital Elevation Model (DEM) data can be acquired. In the present study the hydro-morphologic parameter which has been derived from the DEM of Cartosat-1 stereo data has been compared with the parameter derived from the DEM of Shuttle Radar Topographic Mission (SRTM) and GTOPO data. The study shows that Cartosat -I data gives a better result for the extraction of Hydrological parameters as compared to SRTM and GTOPO.

 

Keywords : Digital Elevation Model (DEM), Cartosat -I stereo pair, RPC, Orthorectification, Sink Fill, Flow Direction, Flow Accumulation

 

 

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