Physiographic study of eastern Ahmednagar area by using remote sensing data
- 1Department of Geography, Abasaheb Kakade College, Bodhegaon, Maharashtra, India
- 2Department of Geography, Taywade College, Koradi, Nagpur, Maharashtra, India
- 3Department of Geography, Bar. Sheshrao Wankhede Mahavidyalaya, Mohapa, Kalmeshwar, India
Int. Res. J. Environment Sci., Volume 6, Issue (4), Pages 18-23, April,22 (2017)
The study of topography or physiography was based on visual interpretation of toposheet, aerial photographs, satellite images as well as doing by manually surveying, field visits and local observations. These study methods, somewhat called time consuming, required more human resources, and less accuracy oriented. Today, the trends of physiographic study have been changed and having a more scientific base due to Remote Sensing (RS) data and its incorporation in Geographical Information System (GIS) software. It is probably most used in spatial planning or surface planning with monitoring, mapping, and analysis of environmental parameters. The optical RS data help to generate the digital relief or digital elevation information of the earth surface at higher resolution with more scientific and visualize manner. On the earth surface, the presence of physiographical aspects can be noticed and could be possible to detect by automated or semi-automated techniques from the satellite derived ASTER DEM data. ASTER is Advanced Space borne Thermal Emission and Reflection Radiometer, which has a 30 M. spatial resolution which could be used in physiographic aspects micro level mapping and assessment. In the present study, the mapping of physiography along with slope, contour, aspects etc. parameters were carried out from ASTER DEM data and its incorporation in GIS software. It was proved and suggested that the ASTER data provide more accurate surface view of physiography than the traditional methods in the case of physiographic modelling and analysis. It is useful and resourceful for the earth scientists, researcher, regional planner, spatial planner in several decisions making and surface related planning process. Based on this physiographic analysis it was revealed that, the southern part of the study area is more undulating than the northern part.
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