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The Gravity Module Assembly used in airborne full tensor gradiometry surveysNormal access

Author: G.J. Barnes
Journal name: Geophysical Prospecting
Issue: Vol 67, No 6, July 2019 pp. 1620 - 1625
DOI: 10.1111/1365-2478.12707
Organisations: Wiley
Language: English
Info: Article, PDF ( 9.6Mb )

Summary:
In airborne gravity gradiometry, the Gravity Module Assembly is an optional gravime-ter unit that is mounted on the same stabilized platform as the Full Tensor Gra-diometer. Direct measurements of the gravity field are needed from this device to constrain the long wavelengths when gradient data are integrated mathematically to form high-resolution gravity fields. The Gravity Module Assembly is, however, capable of providing independent gravity data with a specification approaching that expected from a dedicated airborne gravity system. Presented here is an error analysis of data from this instrument collected alongside the Full Tensor Gradiometer during an airborne survey. By having both gradiometry and gravity datasets, comparisons of the information content in these two types of measurement are made.

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