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Comparing gravity and gravity gradient surveys
Author(s) -
Barnes Gary J.,
Lumley John M.,
Houghton Phill I.,
Gleave Richard J.
Publication year - 2011
Publication title -
geophysical prospecting
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.735
H-Index - 79
eISSN - 1365-2478
pISSN - 0016-8025
DOI - 10.1111/j.1365-2478.2010.00900.x
Subject(s) - gradiometer , geology , gravimeter , geodesy , gemology , noise (video) , geophysics , remote sensing , seismology , engineering geology , physics , computer science , tectonics , volcanism , casing , magnetometer , quantum mechanics , artificial intelligence , magnetic field , image (mathematics)
Noise levels in marine and airborne full tensor gravity gradiometer surveys together with conventional land, marine and airborne gravity surveys are estimated and analysed in gridded form, resulting in relations that detail how these different survey systems can be compared analytically. After defining survey parameters including line spacing, speed and instrument bandwidth, the relations estimate the noise levels that result on either grids of gravity (gz) or gravity gradient (Gzz) as a function of the spatial filtering often applied during geological interpretation. Such comparisons are believed to be a useful preliminary guide for survey selection and planning.