Journal
EARTH PLANETS AND SPACE
Volume 73, Issue 1, Pages -Publisher
SPRINGER
DOI: 10.1186/s40623-020-01334-8
Keywords
EM induction; Mantle electrical conductivity; Swarm; CryoSat-2
Categories
Funding
- Grant Agency of the Czech Republic [20-07378S]
- Swarm DISC activities, ESA contract [4000109587]
- Ministry of Education, Youth and Sports from the Large Infrastructures for Research, Experimental Development and Innovations project IT4Innovations National Supercomputing Center [LM2015070, OPEN-18-46]
- Charles University
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This study used satellite data to establish mantle conductivity models, identifying degree 3 conductivity structures that partially overlap with the shape of the large low-shear velocity provinces in the lower mantle.
The electrical conductivity is an important geophysical parameter connected to the thermal, chemical, and mineralogical state of the Earth's mantle. In this paper, we apply the previously developed methodology of forward and inverse EM induction modeling to the latest version of satellite-derived spherical harmonic coefficients of external and internal magnetic field, and obtain the first 3-D mantle conductivity models with contributions from Swarm and CryoSat-2 satellite data. We recover degree 3 conductivity structures which partially overlap with the shape of the large low-shear velocity provinces in the lower mantle.
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