Abstract
Abstract. One of the main tasks in 3D geological modeling is the boundary
parametrization of the subsurface from geological observations and
geophysical inversions. Several approaches have been developed for geometric
inversion and joint inversion of geophysical datasets. However, the robust,
quantitative integration of models and datasets with different spatial
coverage, resolution, and levels of sparsity remains challenging. One
promising approach for recovering the boundary of the geological units is
the utilization of a level set inversion method with potential field data.
We focus on constraining 3D geometric gravity inversion with sparse
lower-uncertainty information from a 2D seismic section. We use a level set approach to recover the geometry of geological bodies
using two synthetic examples and data from the geologically complex Yamarna
Terrane (Yilgarn Craton, Western Australia). In this study, a 2D seismic
section has been used for constraining the location of rock unit boundaries
being solved during the 3D gravity geometric inversion. The proposed work is
the first we know of that automates the process of adding spatially
distributed constraints to the 3D level set inversion. In many hard-rock
geoscientific investigations, seismic data are sparse, and our results
indicate that unit boundaries from gravity inversion can be much better
constrained with seismic information even though they are sparsely
distributed within the model. Thus, we conclude that it has the potential to
bring the state of the art a step further towards building a 3D geological
model incorporating several sources of information in similar regions of
investigation.
Funder
Australian Research Council
Subject
Paleontology,Stratigraphy,Earth-Surface Processes,Geochemistry and Petrology,Geology,Geophysics,Soil Science
Reference66 articles.
1. Aminzadeh, F.: 3D salt and overthrust seismic models: AAPG Studies in Geology No. 42 and SEG Geophysical Developments Series No. 5, 1996.
2. Anand, R. R. and Paine, M.: Regolith geology of the Yilgarn Craton, Western
Australia: implications for exploration, Aust. J. Earth Sci., 49, 3–162,
2002.
3. Blewett, R. S., Henson, P. A., Roy, I. G., Champion, D. C., and Cassidy, K.
F.: Scale-integrated architecture of a world-class gold mineral system: The
Archaean eastern Yilgarn Craton, Western Australia, Precambrian Res.,
183, 230–250, https://doi.org/10.1016/j.precamres.2010.06.004, 2010.
4. Boulanger, O. and Chouteau, M.: Constraints in 3D gravity inversion,
Geophys. Prospect., 49, 265–280, https://doi.org/10.1046/j.1365-2478.2001.00254.x,
2001.
5. Burger, M. and Osher, S. J.: A Survey in Mathematics for Industry A survey
on level set methods for inverse problems and optimal design, Eur. J. Appl.
Math., 16, 263–301, https://doi.org/10.1017/S0956792505006182, 2005.
Cited by
12 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献