1. Department of Physics, Geophysics Research Group, Akwa Ibom State University, Ikot Akpadem , Mkpat Enin Local Government Area , Akwa Ibom State, Nigeria
2. Applied Geophysics Programme, Department of Physics, University of Calabar, PMB 1115 Calabar, Cross River State, Nigeria
3. Physics Department, Obong University, Obong Ntak, Akwa Ibom State, Nigeria