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Geoid height versus topography for oceanic plateaus and swells
- Source :
- Journal of Geophysical Research. 94
- Publication Year :
- 1989
- Publisher :
- United States: NASA Center for Aerospace Information (CASI), 1989.
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Abstract
- Gridded geoid height data (Marsh et al.l, 1986) and gridded bathymetry data (Van Wykhouse, 1973) are used to estimate the average compensation depths of 53 oceanic swells and plateaus. The relationship between geoid height and topography is examined using Airy and thermal compensation models. It is shown that geoid height is linearly related to topography between wavelengths of 400 and 4000 m as predicted by isostatic compensation models. The geoid/topography ratio is dependent on the average depth of compensation. The intermediate geoid/topography ratios of most thermal swells are interpreted as a linear combination of the decaying thermal swell signature and that of the persisting Airy-compensated volcanic edifice.
- Subjects :
- Geophysics
Subjects
Details
- Language :
- English
- ISSN :
- 01480227
- Volume :
- 94
- Database :
- NASA Technical Reports
- Journal :
- Journal of Geophysical Research
- Notes :
- NAG5-787
- Publication Type :
- Report
- Accession number :
- edsnas.19890056768
- Document Type :
- Report