Increased density of large low-velocity provinces recovered by seismologically constrained gravity inversion

Szwillus, Wolfgang; Ebbing, Jörg; Steinberger, Bernhard

doi:https://doi.org/10.5194/se-11-1551-2020

Articles | Volume 11, issue 4

https://doi.org/10.5194/se-11-1551-2020

© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/se-11-1551-2020

© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 11, issue 4

Research article

|

26 Aug 2020

Research article |

| 26 Aug 2020

Increased density of large low-velocity provinces recovered by seismologically constrained gravity inversion

Wolfgang Szwillus, Jörg Ebbing, and Bernhard Steinberger

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Final revised paper (published on 26 Aug 2020)
Supplement to the final revised paper
Preprint (discussion started on 24 Feb 2020)

Interactive discussion

Status: closed

AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment

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- Supplement

RC1: 'Referee comments', Anonymous Referee #1, 08 Mar 2020
- AC1: 'Reviewer 1 Response', Wolfgang Szwillus, 03 Jun 2020
RC2: 'Review of "Increased LLVP density recovered by seismologically constrained gravity inversion"', Anonymous Referee #2, 18 Mar 2020
- AC2: 'Reviewer 2 Response', Wolfgang Szwillus, 03 Jun 2020

Peer-review completion

AR: Author's response | RR: Referee report | ED: Editor decision

AR by Wolfgang Szwillus on behalf of the Authors (10 Jun 2020)

ED: Referee Nomination & Report Request started (26 Jun 2020) by Taras Gerya

RR by Anonymous Referee #1 (30 Jun 2020)

RR by Anonymous Referee #2 (02 Jul 2020)

ED: Publish as is (02 Jul 2020) by Taras Gerya

ED: Publish subject to technical corrections (03 Jul 2020) by Susanne Buiter (Executive editor)

AR by Wolfgang Szwillus on behalf of the Authors (10 Jul 2020) Manuscript

Short summary

At the bottom of the mantle (2850 km depth) two large volumes of reduced seismic velocity exist underneath Africa and the Pacific. Their reduced velocity can be explained by an increased temperature or a different chemical composition. We use the gravity field to determine the density distribution inside the Earth's mantle and find that it favors a distinct chemical composition over a purely thermal cause.