Computer Science
Scientific paper
Mar 1989
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989e%26psl..92..234s&link_type=abstract
Earth and Planetary Science Letters (ISSN 0012-821X), vol. 92, no. 2, March 1989, p. 234-246.
Computer Science
50
Continental Shelves, Crustal Fractures, Earth Crust, Ocean Bottom, Plateaus, Airy Function, Seismology, Subtraction, Topography
Scientific paper
Using global topographic data and the assumption of Airy isostasy, it is estimated that the crustal volume of the continents is 7182 X 10 to the 6th cu km. The crustal volumes of the oceanic and continental submarine plateaus are calculated at 369 X 10 to the 6th cu km and 242 X 10 to the 6th cu km, respectively. The total continental crustal volume is found to be 7581 X 10 to the 6th cu km, 3.2 percent of which is comprised of continental submarine plateaus on the seafloor. An upper bound on the contintental crust addition rate by the accretion of oceanic plateaus is set at 3.7 cu km/yr. Subduction of continental submarine plateaus with the oceanic lithosphere on a 100 Myr time scale yields an upper bound to the continental crustal subtraction rate of 2.4 cu km/yr.
Sandwell David
Schubert Gerald
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