Now available to download from the Geoscience Store! Southwest Africa Potential Field Datasets! The Southwest Africa Potential Field product is part of Frogtech’s range of low-cost, ArcGIS-ready Core and Enhanced potential field datasets available for immediate purchase and download from the Geoscience Store.
The South-West Africa Enhanced Potential Field product includes a full suite of gravity datasets that are based on the Sandwell and Smith Satellite Free-Air gravity v24.1 dataset from the Scripps Institution of Oceanography (SIO). Frogtech Geoscience have calculated the Bouguer and Isostatic correction and applied it to the Free-Air data. A Low-pass filter with a cut-off wavelength of 35 km has been applied to the onshore data.
Frogtech Geoscience have applied their proprietary Compound Anomaly and Low Magnetic Latitude correction to EMAG2 v3 TMI data to accurately position and represent structurally the magnetic anomalies in this challenging area. The region to the south is at a higher magnetic latitude so Frogtech Geoscience have applied a variable reduction to the pole to the data as well.
The digital elevation data has been produced from the 1 km grid cell size SRTM30 Plus v11 DEM data from SIO offshore stitched with SRTM3 v1 data from NOAA onshore. Both datasets were regridded to a grid cell size of 500 m to ensure there are no gridding artefacts when the datasets were stitched.
Frogtech specialises in rapid, high-quality custom potential field processing and geologically-constrained magnetic and gravity modelling.