Rapid gravity and gravity gradiometry terrain corrections via an adaptive quadtree mesh discretization

2011 ◽  
Vol 42 (1) ◽  
pp. 88-97 ◽  
Author(s):  
Kristofer Davis ◽  
M. Andy Kass ◽  
Yaoguo Li
Keyword(s):  
Gravity Gradiometry ◽  
Terrain Corrections ◽  
Quadtree Mesh

DEM sourcing guidelines for computing 1Eö accurate terrain corrections for airborne gravity gradiometry

2017 ◽  
Vol 136 ◽  
pp. 335-342
Author(s):  
Maria Annecchione ◽  
David Hatch ◽  
Shane W. Hefford
Keyword(s):  
Airborne Gravity ◽  
Gravity Gradiometry ◽  
Terrain Corrections ◽  
Airborne Gravity Gradiometry

Airborne gravity gradiometry: Terrain corrections and elevation error

Geophysics ◽  
2009 ◽  
Vol 74 (5) ◽  
pp. I37-I42 ◽  
Author(s):  
Mark Dransfield ◽  
Yi Zeng
Keyword(s):  
Power Law ◽  
Data Interpretation ◽  
Relative Magnitude ◽  
Terrain Correction ◽  
Flying Height ◽  
Airborne Gravity ◽  
Gravity Gradiometry ◽  
Correction Error ◽  
Terrain Corrections ◽  
Airborne Gravity Gradiometry

Terrain corrections for airborne gravity gradiometry data are calculated from a digital elevation model (DEM) grid. The relative proximity of the terrain to the gravity gradiometer and the relative magnitude of the density contrast often result in a terrain correction that is larger than the geologic signal of interest in resource exploration. Residual errors in the terrain correction can lead to errors in data interpretation. Such errors may emerge from a DEM that is too coarsely sampled, errors in the density assumed in the calculations, elevation errors in the DEM, or navigation errors in the aircraft position. Simple mathematical terrains lead to the heuristic proposition that terrain-correction errors from elevation errors in the DEM are linear in the elevation error but follow an inverse power law in the ground clearance of the aircraft. Simulations of the effect of elevation error on terrain-correction error over four measured DEMs support this proposition. This power-law relation may be used in selecting an optimum survey flying height over a known terrain, given a desired terrain-correction error.

Rapid gravity and gravity gradiometry terrain correction via adaptive quadtree mesh discretization

2010 ◽  
Author(s):  
Kristofer Davis ◽  
M. Andy Kass ◽  
Yaoguo Li
Keyword(s):  
Terrain Correction ◽  
Gravity Gradiometry ◽  
Quadtree Mesh

scholarly journals Rapid gravity gradiometry terrain correction via adaptive quadtree mesh discretization

2010 ◽  
Vol 2010 (1) ◽  
pp. 1-4
Author(s):  
M. Andy Kass ◽  
Kristofer Davis ◽  
Yaoguo Li
Keyword(s):  
Terrain Correction ◽  
Gravity Gradiometry ◽  
Quadtree Mesh

Underground Structures and Gravity Gradiometry

2002 ◽  
Author(s):  
M. W. Maier
Keyword(s):  
Gravity Gradiometry ◽  
Underground Structures

scholarly journals Massively parallel 3D inversion of gravity and gravity gradiometry data

Preview ◽  
2011 ◽  
Vol 2011 (152) ◽  
pp. 29-34 ◽  
Author(s):  
Glenn Wilson ◽  
Martin Čuma ◽  
Michael S. Zhdanov
Keyword(s):  
Massively Parallel ◽  
Gravity Gradiometry ◽  
3D Inversion

A Monte Carlo approach to constraining uncertainties in modelled downhole gravity gradiometry applications

2017 ◽  
Vol 48 (3) ◽  
pp. 305-315
Author(s):  
Samuel J. Matthews ◽  
Craig O’Neill ◽  
Mark A. Lackie
Keyword(s):  
Monte Carlo ◽  
Gravity Gradiometry ◽  
Monte Carlo Approach

On the Resolvability of Steam Assisted Gravity Drainage Reservoirs Using Time-Lapse Gravity Gradiometry

2017 ◽  
Vol 174 (11) ◽  
pp. 4119-4136 ◽  
Author(s):  
E. Judith Elliott ◽  
Alexander Braun
Keyword(s):  
Time Lapse ◽  
Gravity Drainage ◽  
Gravity Gradiometry ◽  
Steam Assisted Gravity Drainage
Sign in / Sign up

Export Citation Format

Share Document