[1] SHUATS, Ctr Geospatial Technol, Allahabad, UP, India
[2] Fed Univ Gashua, Dept Geog, Gashua, Yobe State, Nigeria
[3] Univ Allahabad, K Banerjee Ctr Atmospher & Ocean Studies, Nehru Sci Ctr, IIDS, Allahabad 211002, Uttar Pradesh, India
[4] Durban Univ Technol, Civil Engn Midlands, POB 101112, ZA-3209 Imbali, South Africa