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Accueil du site → Doctorat → Inde → 2016 → Assessment of climate change and its impacts on environment of Madurai District Tamil Nadu India using remote sensing and gis

The Gandhigram Rural Institute (2016)

Assessment of climate change and its impacts on environment of Madurai District Tamil Nadu India using remote sensing and gis

Suhatharahima, S

Titre : Assessment of climate change and its impacts on environment of Madurai District Tamil Nadu India using remote sensing and gis

Auteur : Suhatharahima, S

Université de soutenance : The Gandhigram Rural Institute

Grade : Doctor of Philosophy (PhD) 2016

Résumé
The present study is focused on the assessment of climate change impacts on environment of Madurai district, Tamil Nadu, India. This study has addressed the changes in climate parameters and its trend. Remote sensing techniques were adopted to study the environment. The changes in land and water resources were analysed through geographical information system. The study period is 1981-2014. The rainfall, temperature, water level and satellite data were procured and used to assess the climate change impacts. The Landsat imageries were used to study the past and present environmental conditions. The local climate also anlysed by retrieving surface temperature. The relationship between local climate parameters and global climate circulation were discussed in this study. The relationship between local climate and land use /land cover changes have also discussed. The changes in surface water bodies were investigated. Great reduction of surface water bodies were seen in the study area. The water level changes were quantified and the zones of different water level had identified. The annual mean water level was declined from 4-5 mbgl to 5-6 bgl. The water potential zones and rainfall zones were correlated with water level zones. The results showed that geology and land use / land cover of the region is highly influencing the water level. The rainfall has lower influence on insitu water level changes. The drought conditions were also analysed in this study for 1981-2014 period. There were very few meteorological droughts occurred but many hydrological drought years had identified. The correlation between meteorological and hydrological drought is very poor. The vegetative drought has increased during recent years and it is greatly influenced by the rainfall and air temperature. From overall, the environmental components were highly affected by the global warming. The seasonal rainfall distribution was highly changing but the annual mean is not reduced. This indicates the oscillation of Indian summer monsoon due to ENSO event. The surface water resources were decreased due to natural and anthropogenic impacts. The ground water level is not much affected by the climate change

Mots clés : Climate Change Diurnal Temperature Madurai Surface Air Temperature Tamil Nadu Temperature Rise Warming

Présentation et version intégrale (Shodhganga)

Page publiée le 25 avril 2021