Spectral Correlation of Satellite and Airborne Geopotential Field Measurements for Lithospheric Analysis

Dissertation Abstract
By
Jeong Woo Kim, Ph.D.
The Ohio State University, 1996
Dr. Ralph R. B. von Frese, Adviser

Spectral correlation analysis was investigated for improving the use of satellite and airborne measurements of gravity and magnetic anomalies in geological applications. Procedures were developed to enhance the recovery of geological components from orbital observations in satellite magnetic and altimetry-derived gravity. In particular, improved geodetic referencing of the orbital observations enhances track-to-track correlation analysis for geologic components. Also, track leveling noise is minimized in geological applications by reconstructing the wavenumber transform from the transforms of the ascending and the descending data sets of polar-orbiting satellites. These procedures were implemented on satellite magnetic and altimetry data for the Arctic, and correlative geologic components between regional magnetic and gravity anomalies, as well as aeromagnetic and satellite magnetic observations were identified by spectral correlation analysis. Spectral correlation analysis was also implemented on well-determined topographic, gravity, and magnetic anomaly observations of Ohio to obtain new constraints on thickness variations, neotectonics, and magnetoisostatic effects of the crust. Spectral correlation analysis was found to enhance greatly the combined use of geopotential field data, and hence the utility of these data for solving geological problems.

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