Joint modeling of lithosphere and mantle dynamics: Evaluation of constraints from global tomography models
With the advances in technology, seismological theory, and data acquisition, a number of high-resolution seismic tomography models have been published. However, discrepancies between tomography models often arise from different theoretical treatments of seismic wave propagation, different inversion...
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ftiiscindia:oai:eprints.iisc.ernet.in:53659 2023-05-15T16:50:45+02:00 Joint modeling of lithosphere and mantle dynamics: Evaluation of constraints from global tomography models Wang, Xinguo Holt, William E Ghosh, Attreyee 2015 application/pdf http://eprints.iisc.ernet.in/53659/ http://eprints.iisc.ernet.in/53659/1/Jou_Geo_Res_120-12_8633_2015.pdf https://doi.org/10.1002/2015JB012188 unknown AMER GEOPHYSICAL UNION http://eprints.iisc.ernet.in/53659/1/Jou_Geo_Res_120-12_8633_2015.pdf Wang, Xinguo and Holt, William E and Ghosh, Attreyee (2015) Joint modeling of lithosphere and mantle dynamics: Evaluation of constraints from global tomography models. In: JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH, 120 (12). pp. 8633-8655. Centre for Earth Sciences Journal Article PeerReviewed 2015 ftiiscindia https://doi.org/10.1002/2015JB012188 2016-04-15T22:13:41Z With the advances in technology, seismological theory, and data acquisition, a number of high-resolution seismic tomography models have been published. However, discrepancies between tomography models often arise from different theoretical treatments of seismic wave propagation, different inversion strategies, and different data sets. Using a fixed velocity-to-density scaling and a fixed radial viscosity profile, we compute global mantle flow models associated with the different tomography models and test the impact of these for explaining surface geophysical observations (geoid, dynamic topography, stress, and strain rates). We use the joint modeling of lithosphere and mantle dynamics approach of Ghosh and Holt (2012) to compute the full lithosphere stresses, except that we use HC for the mantle circulation model, which accounts for the primary flow-coupling features associated with density-driven mantle flow. Our results show that the seismic tomography models of S40RTS and SAW642AN provide a better match with surface observables on a global scale than other models tested. Both of these tomography models have important similarities, including upwellings located in Pacific, Eastern Africa, Iceland, and mid-ocean ridges in the Atlantic and Indian Ocean and downwelling flows mainly located beneath the Andes, the Middle East, and central and Southeast Asia. Article in Journal/Newspaper Iceland Indian Institute of Science, Bangalore: ePrints@IIsc Indian Pacific Journal of Geophysical Research: Solid Earth 120 12 8633 8655 |
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Indian Institute of Science, Bangalore: ePrints@IIsc |
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Centre for Earth Sciences Wang, Xinguo Holt, William E Ghosh, Attreyee Joint modeling of lithosphere and mantle dynamics: Evaluation of constraints from global tomography models |
topic_facet |
Centre for Earth Sciences |
description |
With the advances in technology, seismological theory, and data acquisition, a number of high-resolution seismic tomography models have been published. However, discrepancies between tomography models often arise from different theoretical treatments of seismic wave propagation, different inversion strategies, and different data sets. Using a fixed velocity-to-density scaling and a fixed radial viscosity profile, we compute global mantle flow models associated with the different tomography models and test the impact of these for explaining surface geophysical observations (geoid, dynamic topography, stress, and strain rates). We use the joint modeling of lithosphere and mantle dynamics approach of Ghosh and Holt (2012) to compute the full lithosphere stresses, except that we use HC for the mantle circulation model, which accounts for the primary flow-coupling features associated with density-driven mantle flow. Our results show that the seismic tomography models of S40RTS and SAW642AN provide a better match with surface observables on a global scale than other models tested. Both of these tomography models have important similarities, including upwellings located in Pacific, Eastern Africa, Iceland, and mid-ocean ridges in the Atlantic and Indian Ocean and downwelling flows mainly located beneath the Andes, the Middle East, and central and Southeast Asia. |
format |
Article in Journal/Newspaper |
author |
Wang, Xinguo Holt, William E Ghosh, Attreyee |
author_facet |
Wang, Xinguo Holt, William E Ghosh, Attreyee |
author_sort |
Wang, Xinguo |
title |
Joint modeling of lithosphere and mantle dynamics: Evaluation of constraints from global tomography models |
title_short |
Joint modeling of lithosphere and mantle dynamics: Evaluation of constraints from global tomography models |
title_full |
Joint modeling of lithosphere and mantle dynamics: Evaluation of constraints from global tomography models |
title_fullStr |
Joint modeling of lithosphere and mantle dynamics: Evaluation of constraints from global tomography models |
title_full_unstemmed |
Joint modeling of lithosphere and mantle dynamics: Evaluation of constraints from global tomography models |
title_sort |
joint modeling of lithosphere and mantle dynamics: evaluation of constraints from global tomography models |
publisher |
AMER GEOPHYSICAL UNION |
publishDate |
2015 |
url |
http://eprints.iisc.ernet.in/53659/ http://eprints.iisc.ernet.in/53659/1/Jou_Geo_Res_120-12_8633_2015.pdf https://doi.org/10.1002/2015JB012188 |
geographic |
Indian Pacific |
geographic_facet |
Indian Pacific |
genre |
Iceland |
genre_facet |
Iceland |
op_relation |
http://eprints.iisc.ernet.in/53659/1/Jou_Geo_Res_120-12_8633_2015.pdf Wang, Xinguo and Holt, William E and Ghosh, Attreyee (2015) Joint modeling of lithosphere and mantle dynamics: Evaluation of constraints from global tomography models. In: JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH, 120 (12). pp. 8633-8655. |
op_doi |
https://doi.org/10.1002/2015JB012188 |
container_title |
Journal of Geophysical Research: Solid Earth |
container_volume |
120 |
container_issue |
12 |
container_start_page |
8633 |
op_container_end_page |
8655 |
_version_ |
1766040858330660864 |