Geophysical Investigations on Gravity Gradiometry and Magnetic Data over the Wichita Uplift Region, Southwestern Oklahoma
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Date
2015-04
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Ohio State University. Division of Geodetic Science
Abstract
The Wichita uplift in southwestern Oklahoma is a unique region that shows strong gravity and
magnetic field anomalies. Detailed geologic data as well as structural cross sections are also
available for the region. This report includes a qualitative geophysical analysis of the airborne
gravity gradiometer profiles, and a quantitative analysis of an airborne magnetic field data
collected in the region. Two datasets were analyzed independently. Firstly, an effort has been
made by comparative analyses of different gravity gradient components with the gravity field
from EGM2008 side by side in order to understand the nature of the subsurface structural setting.
Secondly, a spectral analysis of magnetic field has been applied using the well-known power-law
behavior of the magnetic field. The resulting source intensity map delineates the areas with high
magnetic sources, and also is in agreement with the geologic findings in the region.
Description
This report was prepared by Dr. Kamil Erkan for work completed while on a post-doctoral fellowship at the School of Earth Sciences, Ohio State University, with support from research funds in the Geodetic Science Program.