IEDA: Marine Geoscience Data System IEDA
Subduction_Bassett Gravity:Anomaly:FreeAir
Residual Free-Air Gravity Anomalies at Global Subduction Zones (investigators Dan Bassett and Tony Watts)
This data set presents images showing residual free-air gravity anomalies for global subduction zones. Residuals are calculated by subtracting a regional spectral average of the trench-normal gravimetric expression across the subduction zone. This procedure removes the steep gradients associated with the seaward and landward trench-slopes, significantly improving the identification of short-wavelength lower-amplitude structure. The image files are in PDF format and were generated from gridded data files. The residual gravity is cited in Bassett and Watts, 2015a,b.
Dan, Bassett
Investigator
GNS
Watts, Anthony
Investigator
Dept of Earth Sciences, University of Oxford
Device Info
NotProvided
Platform
NotApplicable
Quality
2
The data have been processed/modified to a level beyond that of basic quality control (e.g. final processed sonar data, photo-mosaics).

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