Gutenberg Open Science: Multi-physics adjoint modeling of Earth structure : combining gravimetric, seismic, and geodynamic inversions

Please use this identifier to cite or link to this item: http://doi.org/10.25358/openscience-5780

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DC Field	Value	Language
dc.contributor.author	Reuber, Georg S.	-
dc.contributor.author	Simons, Frederik J.	-
dc.date.accessioned	2021-05-07T08:26:03Z	-
dc.date.available	2021-05-07T08:26:03Z	-
dc.date.issued	2020	-
dc.identifier.uri	https://openscience.ub.uni-mainz.de/handle/20.500.12030/5789	-
dc.description.abstract	We discuss the resolving power of three geophysical imaging and inversion techniques, and their combination, for the reconstruction of material parameters in the Earth’s subsurface. The governing equations are those of Newton and Poisson for gravitational problems, the acoustic wave equation under Hookean elasticity for seismology, and the geodynamics equations of Stokes for incompressible steady-state flow in the mantle. The observables are the gravitational potential, the seismic displacement, and the surface velocity, all measured at the surface. The inversion parameters of interest are the mass density, the acoustic wave speed, and the viscosity. These systems of partial differential equations and their adjoints were implemented in a single Python code using the finite-element library FeNICS. To investigate the shape of the cost functions, we present a grid search in the parameter space for three end-member geological settings: a falling block, a subduction zone, and a mantle plume. The performance of a gradient-based inversion for each single observable separately, and in combination, is presented. We furthermore investigate the performance of a shape-optimizing inverse method, when the material is known, and an inversion that inverts for the material parameters of an anomaly with known shape.	en_GB
dc.language.iso	eng	de
dc.rights	CC BY	*
dc.rights.uri	https://creativecommons.org/licenses/by/4.0/	*
dc.subject.ddc	550 Geowissenschaften	de_DE
dc.subject.ddc	550 Earth sciences	en_GB
dc.title	Multi-physics adjoint modeling of Earth structure : combining gravimetric, seismic, and geodynamic inversions	en_GB
dc.type	Zeitschriftenaufsatz	de
dc.identifier.doi	http://doi.org/10.25358/openscience-5780	-
jgu.type.dinitype	article	en_GB
jgu.type.version	Published version	de
jgu.type.resource	Text	de
jgu.organisation.department	FB 09 Chemie, Pharmazie u. Geowissensch.	de
jgu.organisation.number	7950	-
jgu.organisation.name	Johannes Gutenberg-Universität Mainz	-
jgu.rights.accessrights	openAccess	-
jgu.journal.title	GEM : international journal on geomathematics	de
jgu.journal.volume	11	de
jgu.pages.alternative	30	de
jgu.publisher.year	2020	-
jgu.publisher.name	Springer	de
jgu.publisher.place	Berlin u.a.	de
jgu.publisher.uri	https://doi.org/10.1007/s13137-020-00166-8	de
jgu.publisher.issn	1869-2680	de
jgu.organisation.place	Mainz	-
jgu.subject.ddccode	550	de
jgu.publisher.doi	10.1007/s13137-020-00166-8
jgu.organisation.ror	https://ror.org/023b0x485
Appears in collections:	JGU-Publikationen

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