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1 Nov 12, 2021
GIS BASED FLOOD SUSCEPTIBILITY MAPPING USING FREQUENCY RATIO MODEL IN DAKSHINA KANNADA, KARNATAKA

This present study of flood susceptibility mapping was car-ried out in GIS. I have taken into consideration Dakshina Kannada District of Karnataka. The study area is mainly Dakshina Kannada (South Canara) which is the southern coastal district of Karnataka State. The area receives rain-fall mainly during south west monsoon season. The mon-soon has mainly affected agricultural lands, buildup lands and other natural and man-made structures. I have mainly taken into analyze the flood affected details in this district over the period of ten years (2009-2019). Yearly once this type of natural disaster or heavy rainfall (flood) has affect-ed this area. As Floods continue to pose greater threat to floura, fauna and properties a clear understanding and as-sessment is required to evaluate the flood prone areas. The Remote sensing and GIS were used to estimate the risk of flood susceptibility in this district. Frequency ratio model was used to derive the flood susceptibility map. ASTER DEM was used to generate the slope length. The Ten condi-tioning factors such as slope, aspect, elevation, Normalized difference vegetation Index (NDVI), Landuse/Landcover (LULC), distance from road, distance from river rainfall, soil types and Stream Power Index and Topographic Wet-ness Index and also flood inventory map were used....

Authors: Sakthivel R, M.Janaki, Manikandan N.

2 Nov 12, 2021
GENERAL LAND USE PATTERN IN THANJAVUR DISTRICT, TAMIL NADU: A GEOGRAPHICAL ANALYSIS

Thanjavur District is geographically located in the Cauvery delta area, and it is known as the "rice bowl" of Tamil Nadu State. Fruitful terrain was equally fertile ground for the creation of art, architecture, and culture. The study of the general land use pattern in Thanjavur District, Tamil Nadu, is an essential part of agricultural geography since it offers a solid foundation for the planning and development of the farming sector in the district. The agricultural industry is the most important source of revenue for the people of the Thanjavur District. Finally, this research discovers that the Thanjavur districts land use classifications have been determined taluk-by-taluk utilising the Geographic Information System (GIS). As a result, the current paper covers the overall land use pattern in Thanjavur District, Tamil Nadu: A Geographical Analysis....

Authors: Kalyani. V, Neelakantan. R.