
TY  - JOUR
A1  - Andy Kass, M. 
A1  - Davis, Kristofer 
A1  - L, Yaoguo 
T1  - Rapid gravity gradiometry terrain correction via adaptive quadtree mesh discretization
JF  - ASEG Extended Abstracts
JO  - ASEG Extended Abstracts
Y1  - 2010
VL  - 2010
IS  - 1
SP  - 1
EP  - 4
KW  - 
UR  - https://doi.org/10.1071/ASEG2010AB197 
N2  - We present a method for modelling the terrain response in gravity gradiometry surveys utilizing an adaptive quadtree mesh discretization. The data-dependent method is tailored to provide rapid and accurate spatial terrain corrections for ground, seaborne, or draped airborne surveys. The surface used in the modelling of terrain effect at each datum is discretized automatically to the largest cell size that will yield the desired accuracy, resulting in much faster modelling than full-resolution calculations. The largest cell sizes within the model occur in areas of minimal correction and at large distances away from the data location. We show synthetic and field examples for proof of concept. The adaptive quadtree method reduces the computational cost of the field example by performing 99.7% fewer calculations than the full model would require while retaining an accuracy of one Eötvös for the gradient data. 
ER  -

