Abstract
A three level classification system, based on the genesis of landforms, was used to map the geomorphology of the Goa state. The first level corresponds to the process that was responsible for landform generation, the second level or the intermediate level was assigned based on the morphography, and the third level corresponds to the individual landforms units identified based on the morphostructure. The map** was carried out using IRS-P6 LISS-III (23.5 m) satellite image as the primary data source. Ancillary data such as geological map, topographic map, digital elevation model (DEM), field data collected by global positioning system (GPS) and web portals for image visualisation, were also used for the map** purpose. A new software designed for map** landforms based on the genesis, was used in this study to create a seamless geomorphology and lineament database of the Goa state in a GIS environment. A total of 58 landforms within six types of genetic classes were mapped in this area. Similarly, structural and geomorphic lineaments were also delineated using the satellite data. The database created has multi-purpose usability such as environmental studies, mining activity assessment, coastal zone management and wasteland development, since the classification system used is focused on processes, not theme specific.
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Acknowledgments
This study was carried out as a part of the national geomorphological and lineament map** project. We thank Dr. V. K. Dadhwal, Director, NRSC, Dr. Y. V. N. Krishnamurthy, Deputy Director (RSA-A), NRSC, and Shri G. Behera, former Deputy Director (RSGIS-AA), NRSC for their encouragement and support to carry out this work. We are grateful to Shri V. Singaraju and Dr. L. P. Singh, Sr. geologists at GSI, Hyderabad, for their valuable suggestions. We gratefully acknowledge the help and facilities provided by the Goa State Remote Sensing Centre during the fieldwork
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Martha, T.R., Ghosh, D., Kumar, K.V. et al. Geospatial Technologies for National Geomorphology and Lineament Map** Project – A Case Study of Goa State. J Indian Soc Remote Sens 41, 905–920 (2013). https://doi.org/10.1007/s12524-012-0260-1
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DOI: https://doi.org/10.1007/s12524-012-0260-1