Remote Sensing Revealed Geomorphic Anomalies and Recent Earth Movements in Cauvery Delta, Tamil Nadu, India
- PDF / 5,859,169 Bytes
- 19 Pages / 595.276 x 790.866 pts Page_size
- 3 Downloads / 250 Views
RESEARCH ARTICLE
Remote Sensing Revealed Geomorphic Anomalies and Recent Earth Movements in Cauvery Delta, Tamil Nadu, India S. M. Ramasamy1 • J. Saravanavel1 Received: 29 March 2019 / Accepted: 5 October 2020 Ó Indian Society of Remote Sensing 2020
Abstract It has been convincingly demonstrated from all over the world that the recent earth movements have greater control over various natural disaster vulnerabilities like seismicity, landslides, floods and the accelerated vulnerabilities to flooding, storm surges, tsunami, sea level rise and erosion along the coasts. But, despite the recurrence of these disasters in the Indian Peninsula, not much of importance was given in the study of the earth movements in general and along the coastal/deltaic regions in particular. However, after the advent of modern satellite-based remote sensing technology, sporadic studies were carried out, which indicated the vulnerability of the Sothern part of the Indian Peninsula too, to recent earth movements. However, no comprehensive information is available on the coastal/deltaic areas, which are more prone to such tectonically induced disaster vulnerabilities. In this context, the scanning of the global literature shows that geomorphology has been used as one of the important tools in mapping the zones of active tectonics/recent earth movements. So, considering the significance of the Cauvery delta of south India on the natural resources, natural disaster vulnerabilities and the towering maritime history, the present study was carried out to bring out a comprehensive picture on the recent earth movements of Cauvery delta and its significance, integrating the faults and the hierarchy of fluvial /drainage anomalies interpreted from different satellite datasets. Keywords Remote sensing Geomorphic anomalies Faults and recent earth movements Coastal resources and disasters Submergence of ancient port cities Cauvery delta, Tamil Nadu, India
Introduction The active tectonics/recent earth movements have major control over various natural disasters like seismicity, landslides, land uplift and the sheet erosion, land subsidence and the vulnerabilities to flooding of the low-lying coasts, accelerated sea level rise, tsunami inundation, coastal erosion etc. However, despite the recurrence of the above disasters, the Indian Peninsula has all along been thought as stable and inert to recent earth movements. However, the studies carried out in the recent years, especially after the advent of modern satellite-based remote & S. M. Ramasamy [email protected] J. Saravanavel [email protected] 1
Department of Remote Sensing, Bharathidasan University, Tiruchirappalli 620023, India
sensing technology, have started showing that major part of the Indian Peninsula is prone to recent earth movements and the related various natural disasters (Grady 1971; Chandra 1977; Vemban et al. 1977; Ramasamy et al. 1987; Nair 1987; Nair and Subramanian 1989; Radhakrishna 1993; Subrahmanya 1994; Singh et al. 1996; Ramasamy and Karthikeyan 1998; Mandal 1999; Ra
Data Loading...
