Major research interests include the Earth’s gravity field and its relationship to isostasy, especially the phenomenon of lithospheric flexure and its implications for rheology, vertical crustal motions and sedimentary basin evolution. BSc. Geology and Physics, University College, London, 1967; Ph.D. Marine Geophysics, University of Durham, 1970; DSc. University of Oxford, 2003. Post-Doctoral Fellow, Bedford Institute of Oceanography, 1970-1971. Research Associate, Lamont-Doherty Geological Observatory of Columbia University, 1971-1976; Senior Research Associate, 1976-1981; Professor of Geological Sciences of Columbia University, 1981-1988; Arthur D. Storke Memorial Professor of Geological Sciences, 1989-1990. Visiting Professor, Institut de Physique du Globe de Paris, 1983; Universite Pierre et Marie Curie, 2004, 2006, 2010; University of Colorado, 2010 and Victoria University, 2011. Distinguished Crosby Visiting Professor, Massachusetts Institute of Technology, 1998 and Green Scholar, Scripps Institution of Oceanography, 2004-2005. Honours include American Association of Petroleum Geologists A. I. Levorsen Award, 1981; University of Miami Rosenstiel Award, 1982; American Geophysical Union (AGU) Fellow, 1985; British Geophysical Association Bullerwell Lecture, 1988; Geological Society of London (GSL) William Smith Lecture, 1992; GSL Murchison Medal, 1993; Member Academia Europaea, 1999; Geological Society of America (GSA) George P. Woollard Award, 2005; GSA Fellow, 2006; European Geophysical Union (EGU) Honorary Fellow, 2008; EGU Arthur Holmes Medal, 2008. Leader or co-leader of 20 oceanographic expeditions to the Atlantic and Pacific Oceans and the Mediterranean, Barents and Philippine Seas. Author or co-author of 181 refereed articles (40 in AGU publications) and 1 book entitled “Isostasy and Flexure of the Lithosphere”. AGU service includes associate editor, Journal of Geophysical Research, 1977-1980 and Maurice Ewing Medal Committee, 1984. Other service includes editor Geology, 1983-1986, Marine and Petroleum Geology, 1983-1995, Marine Geophysical Researches, 1984-1995, Tectonophysics, 1984-1988, Basin Research, 1987-1995. Administrative activities include Member US National Academy Sciences, Committee on Earth Sciences, 1979-1981; Chair Department of Geological Sciences, Columbia University, 1982-1985; Chair BIRPS Program Board, 1991-1994; GSL Council, Chair Science Committee, 2004-2007; Chair NSF Decadal Review of the US MARGINS Program, 2010.