SM.Ramasamy: Director, Centre for Remote Sensing and Coordinator, School of Geosciences, Bharathidasan University,Tiruchirappalli, Tamil Nadu, IndiaC.J.Kumanan: Senior Faculty, Centre for Remote Sensing, Bharathidasan University, Tiruchirappalli, Tamil Nadu, India.BRIG. R.Sivakumar: NRDMS Division, Department of Science and Technology,Misnistry of Science and Technology,Govt.of India, New Delhi,IndiaBhoop Singh: NRDMS Division,Department of Science and Technology,Misnistry of Science and Technology,Govt.of India, New Delhi,India