Global Geoid and Gravity Anomaly Predictions Using the Collocation and Point Mass Techniques

Global Geoid and Gravity Anomaly Predictions Using the Collocation and Point Mass Techniques
Author: Robert P. Bessette
Publisher:
Total Pages: 28
Release: 1984
Genre: Altitudes
ISBN:

We previously described (14,14) spherical-harmonic global adjustments of satellite altimetry using the AFGL short-arc technique supplemented with point masses to allow incorporation of short-wavelength geoidal detail. Recently, we have also investigated another technique to enhance short-wavelength detail: least squares collocation with noise. Both methods provide a means to determine a high resolution gravity field on a local, regional or global scale. Statistical comparisons of these two methods have been made in selected areas and the results tabulated.

A Bouguer Gravity Anomaly Map of Africa

A Bouguer Gravity Anomaly Map of Africa
Author: Rolf L. Slettene
Publisher:
Total Pages: 38
Release: 1973
Genre: Gravity anomalies
ISBN:

A Bouguer Gravity Anomaly Map of Africa has been compiled using only terrestrial data. The map is a contoured representation of one degree x one degree mean anomaly values. Some one degree x one degree values are computed by conventional or statistical means directly from observed gravity data held at DMAAC in the DOD Gravity Library. The majority of the one degree x one degree values are predicted by geophysical-gravity correlation methods. The anomaly pattern shown on the map is discussed and evaluated with respect to regional and local tectonic and geologic patterns. The entire Bouguer anomaly map is computer generated and drawn by an electronic plotting device. (Author).