Global relationship between oceanic geoid and seafloor depth New results

Details Global relationship between oceanic geoid and seafloor depth New results Global relationship between oceanic geoid and seafloor depth New results

Jan 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987georl..14....1c&link_type=abstract

Geophysical Research Letters (ISSN 0094-8276), vol. 14, Jan. 1987, p. 1-4.

Physics

12

Depth, Geochronology, Geoids, Ocean Bottom, Earth Crust, Transfer Functions, Wavelengths

Scientific paper

Using the crustal ages of Mauk (1977), and after removing the lithospheric cooling effects, new global transfer functions between oceanic geoid and seafloor depth for the 1000-4000 km wavelength range are derived which are systematically 30-40 percent lower than previous values. Admittances are found to be positive, reaching a maximim of about 5 m/km around 2750 km wavelength, and decreasing to about 2.5 m/km at shorter wavelengths. The present results do not exclude the possibility that part of the signal at the 2750 km wavelength is of convective origin.

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