English
 
Help Privacy Policy Disclaimer
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT
Add to Basket
  Local TagsRelease HistoryDetailsSummary

Released
Journal Article

Seismic detection of a deep mantle discontinuity within Mars by InSight

MPS-Authors
/persons/resource/persons239099

Scholz,  John-Robert
Department Planets and Comets, Max Planck Institute for Solar System Research, Max Planck Society;

External Resource

https://ui.adsabs.harvard.edu/abs/2022PNAS..11904474H
(Any fulltext)

Fulltext (restricted access)
There are currently no full texts shared for your IP range.
Fulltext (public)
There are no public fulltexts stored in PuRe
Supplementary Material (public)
There is no public supplementary material available
Citation

Huang, Q., Schmerr, N. C., King, S. D., Kim, D., Rivoldini, A., Plesa, A.-C., et al. (2022). Seismic detection of a deep mantle discontinuity within Mars by InSight. Proceedings of the National Academy of Science, 119, e2204474119. doi:10.1073/pnas.2204474119.


Cite as: https://hdl.handle.net/21.11116/0000-000C-B911-0
Abstract
The depth and sharpness of a midmantle seismic discontinuity, associated with the phase transition from mineral olivine to its higher-pressure polymorphs, provide essential clues to understanding the temperature and composition of Martian mantle. Using data from NASA's InSight mission, we examined five marsquakes located 3,400 to 4,400 km away from the InSight lander and observed triplications of the P and S waves that resulted from the interaction with a seismic discontinuity produced by the postolivine transition. Our observations indicate that the Martian mantle is more iron rich than Earth,and both planets have a similar potential temperature. Our geodynamic modeling further constrains the mantle composition and surface heat flow and indicates that the mantle was cold in the early Noachian.