Shahriar Md Arifur RahmanAssistant Professor & ChairmanDepartment of Environmental Science and Disaster ManagementRoom- 611Academic Building-2 (5th Floor) Noakhali Science and Technology University (NSTU)Sonapur, Noakhali- 3814, Bangladesh.Email: shahriar.arif@gmail.com s.rahman@nstu.edu.bdPhone: