| Citation | Distinguished for his many innovative contributions to theoretical studies in geophysics, including the geometry of plate tectonics but especially the development and applications of inverse theory. He has devoted most attention to interpreting electro-magnetic data and his work is marked by outstandingly clear exposition of a difficult subject.
He is a stimulating teacher and supervisor of graduate students. He has been professor of geophysics at the I.G.P.P. since 1975, he was a Sloan Foundation Fellow in 1969 - 1971, a Guggenheim Memorial Fellow in 1975 and received the James B Macelwane Award in 1976. |