Upward Continuation of Surface Gravity Anomalies.
Abstract
Investigations on the upward continuation of gravity anomalies given on the surface of the earth's visible topography are reported. Results are compared for three upward continuation procedures: first, the direct Poisson integration of the original terrain-uncorrected surface anomalies; second, the direct Poisson integration of terrain-corrected (i.e., Faye) surface anomalies; and third, the so-called indirect method. In the indirect method the original anomaly field is basically split into three frequency ranges that are then modeled separately: the low frequencies are modeled by spherical harmonics; the medium frequencies are modeled by Poisson integration of residual surface anomalies with long-wavelength terrain correction applied; and the high frequencies are modeled by prism integration of the gravitational effects of certain shallow topographic masses of assumed constant density. Keywords include: Poisson Integration, Surface Free-Air Anomalies, Spherical Harmonics, Topographic Mass Effects.
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 01, 1984
- Accession Number
- ADA154973
Entities
People
- J. Y. Cruz
- P. Laskowski
Organizations
- Ohio State University