Abstract:

(1)Dr .El-Sayed Mohamed Abdelrahman Professor of Geophysics ,Cairo University ,Egypt . His pri mary researchinterests are poten-tial field methods . His research has focused on gravity , magnetic ,self-potential methods including depth and shape determination . He hasbeen awarded 5 prizes between 1992 and 2003 ,including the state prize in Earth sciences ,the state prize in advanced technological sciencesand the others . (2)Dr . Norman Bleistein Emeritus Professor of Geophysics ,Colorado School of Mines , U...