Free-air anomalies in the western Pacific from the viewpoint of wave number spectrum |
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| Authors: | Hiromi Fujimoto Yoshibumi Tomoda Hayato Shoji |
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| Affiliation: | (1) Ocean Research Institute, University of Tokyo, Minamidai, Nakano-ku, 164 Tokyo, Japan |
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| Abstract: | Free-air anomalies in the western Pacific consist of the two groups of wavelengths 200–500 km and longer than 1,000 km. This is the reason why the patterns of short wavelength geoidal undulation and those of free-air anomalies in the western Pacific look alike with earch other. The gravity anomalies of shorter wavelengths can be explained by tectonics related with thickness of the lithosphere. Positive free-air anomalies of longer wavelengths may be explained by relics of the subsided lithosphere. |
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