1. Equatorial Geophysical Research LaboratoryIndian Institute of Geomagnetism Tirunelveli India
2. Indian Institute of Geomagnetism New Panvel India
3. Department of Civil and Environmental EngineeringMassachusetts Institute of Technology Cambridge Massachusetts USA
4. Indian Institute of Tropical Meteorology Pune India
5. Department of PhysicsTripura University Agartala India