Journal ArticleDOI
Dissipation at tidal and seismic frequencies in a melt-free, anhydrous Mars
Francis Nimmo,Ulrich H. Faul +1 more
TLDR
In this paper, a modified Burgers model based on laboratory experiments on anhydrous, melt-free olivine was used to model viscoelastic dissipation inside a convective Mars.Abstract:
[1] The measured inward motion of Phobos provides a constraint on the tidal dissipation factor, Q, within Mars. We model viscoelastic dissipation inside a convective Mars using a modified Burgers model based on laboratory experiments on anhydrous, melt-free olivine. The model tidal Q is highly sensitive to the mantle potential temperature and grain size assumed but relatively insensitive to the bulk density and rigidity structure. Q thus provides a tight constraint on the Martian interior temperature. By fitting the observed tidal Q and tidal Love number (k2) values and requiring present-day melt generation, we estimate that for a grain size of 1 cm the current mantle potential temperature is 1625±75 K, similar to that of the Earth. This estimate is consistent with recent petrologically derived determinations of mantle potential temperature but lower than estimates in some thermal evolution models. The presence of water in the Martian mantle would reduce our estimated temperature. Our preferred mantle grain size of ≈1 cm is somewhat larger than that of the Earth's upper mantle. The predicted mantle seismic Q is about 130 and is almost independent of depth. The Martian lithosphere represents a high seismic velocity lid, which should be readily detectable with future seismological observations.read more
Citations
More filters
Journal ArticleDOI
The seismicity of Mars
Domenico Giardini,Philippe Lognonné,Philippe Lognonné,William B. Banerdt,William T. Pike,U. R. Christensen,Savas Ceylan,John Clinton,M. van Driel,Simon Stähler,Maren Böse,Maren Böse,Raphaël F. Garcia,Amir Khan,Amir Khan,Mark P. Panning,Clément Perrin,Don Banfield,Eric Beucler,Constantinos Charalambous,Fabian Euchner,Anna Horleston,A. Jacob,Taichi Kawamura,Sharon Kedar,Guenole Mainsant,John-Robert Scholz,Sue Smrekar,Aymeric Spiga,Aymeric Spiga,C. Agard,Daniele Antonangeli,S. Barkaoui,E. Barrett,P. Combes,Vincent Conejero,Ingrid Daubar,Mélanie Drilleau,C. Ferrier,T. Gabsi,Tamara Gudkova,K. Hurst,Foivos Karakostas,Scott D. King,Martin Knapmeyer,Brigitte Knapmeyer-Endrun,R. Llorca-Cejudo,Antoine Lucas,L. Luno,Ludovic Margerin,J. B. McClean,David Mimoun,Naomi Murdoch,Francis Nimmo,M. Nonon,Constanza Pardo,Attilio Rivoldini,J. A Rodriguez Manfredi,Henri Samuel,Henri Samuel,Martin Schimmel,Alexander E. Stott,Eléonore Stutzmann,Nicholas A Teanby,Tristram Warren,Renee Weber,Mark A. Wieczorek,C. Yana +67 more
TL;DR: The InSight (Interior Exploration using Seismic Investigations, Geodesy and Heat Transport) lander was deployed in Elysium Planitia on Mars on 26 November 2018 and fully deployed its seismometer by the end of February 2019 as mentioned in this paper.
Journal ArticleDOI
A geophysical perspective on the bulk composition of Mars
Amir Khan,Christian Liebske,Antoine Rozel,Attilio Rivoldini,Francis Nimmo,James A. D. Connolly,Ana-Catalina Plesa,Domenico Giardini +7 more
TL;DR: In this article, the authors invert the Martian tidal response and mean mass and moment of inertia for chemical composition, thermal state, and interior structure using phase equilibrium computations with a laboratory-based viscoelastic dissipation model.
Journal ArticleDOI
Planned Products of the Mars Structure Service for the InSight Mission to Mars
Mark P. Panning,Philippe Lognonné,W. Bruce Banerdt,Raphaël F. Garcia,Matthew P. Golombek,Sharon Kedar,Brigitte Knapmeyer-Endrun,Antoine Mocquet,Nicholas A Teanby,Jeroen Tromp,Renee Weber,Eric Beucler,J. F. Blanchette-Guertin,Ebru Bozdag,Mélanie Drilleau,Tamara Gudkova,Tamara Gudkova,Stefanie Hempel,Amir Khan,Vedran Lekic,Naomi Murdoch,Ana-Catalina Plesa,Atillio Rivoldini,Nicholas Schmerr,Y. Ruan,O. Verhoeven,Chao Gao,Ulrich R. Christensen,John Clinton,Véronique Dehant,Domenico Giardini,David Mimoun,W. Thomas Pike,Sue Smrekar,Mark A. Wieczorek,Martin Knapmeyer,James Wookey +36 more
TL;DR: The InSight lander will deliver geophysical instruments to Mars in 2018, including seismometers installed directly on the surface (Seismic Experiment for Interior Structure, SEIS) as discussed by the authors.
Journal ArticleDOI
Verifying single-station seismic approaches using Earth-based data: Preparation for data return from the InSight mission to Mars
Mark P. Panning,Eric Beucler,Mélanie Drilleau,Mélanie Drilleau,Antoine Mocquet,Philippe Lognonné,W. Bruce Banerdt +6 more
TL;DR: In this paper, the authors used a terrestrial dataset recorded at the Global Seismic Network station BFO, located at the Black Forest Observatory in Germany, to verify an approach for event location and structure determination based on recordings of multiple orbit surface waves.
References
More filters
Book
Deformation-Mechanism Maps: The Plasticity and Creep of Metals and Ceramics
H.J. Frost,Michael F. Ashby +1 more
TL;DR: Deformation-mechanism maps: the plasticity and creep of metals and ceramics as discussed by the authors, Deformation-Mechanism Maps of metal deformation: the deformation and the creep of metal and ceramic.
Book ChapterDOI
Rheology of the Upper Mantle and the Mantle Wedge: A View from the Experimentalists
Greg Hirth,David L. Kohlstedt +1 more
TL;DR: In this paper, the authors provide a critical review of flow law parameters for olivine aggregates and single crystals deformed in the diffusion creep and dislocation creep regimes under both wet and dry conditions.
Journal ArticleDOI
Temperatures in Ambient Mantle and Plumes: Constraints from Basalts, Picrites, and Komatiites
Claude Herzberg,Paul D. Asimow,Nicholas Arndt,Yaoling Niu,C. M. Lesher,J. G. Fitton,Michael J. Cheadle,Ad D. Saunders +7 more
TL;DR: In this paper, a new evaluation is made of parental magma compositions that would crystallize olivines with the maximum forsterite contents observed in lava flows, consistent with the plume model.
Journal ArticleDOI
Mantle solidus: Experimental constraints and the effects of peridotite composition
TL;DR: In this paper, a review of experiments on natural peridotites allows improved constraints on the location of the mantle solidus, with the best fit to the solidus between 0 and 10 GPa given by T(°C) = aP2 + bP + c where a = −5.104, b = 132.899, and c = 1120.
Book
The viscosity of the earth's mantle
TL;DR: In this article, the authors argue that the viscosity of the entire mantle is very close to 1022 poise, except for a low-viscosity channel, about 75 kilometers thick, in the uppermost mantle.
Related Papers (5)
Grainsize-sensitive viscoelastic relaxation in olivine: Towards a robust laboratory-based model for seismological application
Ian Jackson,Ulrich H. Faul +1 more