Initial results from the InSight mission on Mars
W. Bruce Banerdt
,
Suzanne E. Smrekar
,
Don Banfield
,
Domenico Giardini
,
Matthew Golombek
,
Catherine L. Johnson
,
Philippe Lognonné
,
Aymeric Spiga
,
Tilman Spohn
,
Clément Perrin
,
Simon C. Stähler
,
Daniele Antonangeli
,
Sami Asmar
,
Caroline Beghein
,
Neil Bowles
,
Ebru Bozdag
,
Peter Chi
,
Ulrich Christensen
,
John Clinton
,
Gareth S. Collins
,
Ingrid Daubar
,
Véronique Dehant
,
Mélanie Drilleau
,
Matthew Fillingim
,
William Folkner
,
Raphaël F. Garcia
(1)
,
Jim Garvin
,
John Grant
,
Matthias Grott
,
Jerzy Grygorczuk
,
Troy Hudson
,
Jessica C. E. Irving
,
Günter Kargl
,
Taichi Kawamura
,
Sharon Kedar
,
Scott King
,
Brigitte Knapmeyer-Endrun
,
Martin Knapmeyer
,
Mark Lemmon
,
Ralph Lorenz
,
Justin N. Maki
,
Ludovic Margerin
,
Scott M. Mclennan
,
Chloe Michaut
,
David Mimoun
(1)
,
Anna Mittelholz
,
Antoine Mocquet
,
Paul Morgan
,
Nils T. Mueller
,
Naomi Murdoch
(1)
,
Seiichi Nagihara
,
Claire Newman
,
Francis Nimmo
,
Mark Panning
,
W. Thomas Pike
,
Ana-Catalina Plesa
,
Sébastien Rodriguez
,
Jose Antonio Rodriguez-Manfredi
,
Christopher T. Russell
,
Nicholas Schmerr
,
Matt Siegler
,
Sabine Stanley
,
Eléanore Stutzmann
,
Nicholas Teanby
,
Jeroen Tromp
,
Martin van Driel
,
Nicholas Warner
,
Renee Weber
,
Mark Wieczorek
W. Bruce Banerdt
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Suzanne E. Smrekar
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Don Banfield
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Domenico Giardini
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Matthew Golombek
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Catherine L. Johnson
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Philippe Lognonné
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Aymeric Spiga
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Tilman Spohn
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Clément Perrin
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Simon C. Stähler
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Daniele Antonangeli
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Sami Asmar
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Caroline Beghein
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Neil Bowles
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Ebru Bozdag
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Peter Chi
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Ulrich Christensen
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John Clinton
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Gareth S. Collins
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Ingrid Daubar
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Véronique Dehant
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Mélanie Drilleau
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Matthew Fillingim
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William Folkner
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Jim Garvin
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John Grant
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Matthias Grott
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Jerzy Grygorczuk
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Troy Hudson
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Jessica C. E. Irving
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Günter Kargl
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Sharon Kedar
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Scott King
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Brigitte Knapmeyer-Endrun
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Martin Knapmeyer
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Mark Lemmon
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Ralph Lorenz
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Justin N. Maki
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Ludovic Margerin
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Scott M. Mclennan
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Chloe Michaut
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David Mimoun
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Anna Mittelholz
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Antoine Mocquet
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Paul Morgan
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Nils T. Mueller
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Naomi Murdoch
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Seiichi Nagihara
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Claire Newman
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Francis Nimmo
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Mark Panning
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W. Thomas Pike
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Ana-Catalina Plesa
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Sébastien Rodriguez
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Jose Antonio Rodriguez-Manfredi
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Christopher T. Russell
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Nicholas Schmerr
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Matt Siegler
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Sabine Stanley
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Eléanore Stutzmann
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Nicholas Teanby
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Jeroen Tromp
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Martin van Driel
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Nicholas Warner
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Renee Weber
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Mark Wieczorek
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Abstract
NASA’s InSight (Interior exploration using Seismic Investigations, Geodesy and Heat Transport) mission landed in Elysium Planitia on Mars on 26 November 2018. It aims to determine the interior structure, composition and thermal state of Mars, as well as constrain present-day seismicity and impact cratering rates. Such information is key to understanding the differentiation and subsequent thermal evolution of Mars, and thus the forces that shape the planet’s surface geology and volatile
processes. Here we report an overview of the first ten months of geophysical observations by InSight. As of 30 September
2019, 174 seismic events have been recorded by the lander’s seismometer, including over 20 events of moment magnitude Mw
= 3–4. The detections thus far are consistent with tectonic origins, with no impact-induced seismicity yet observed, and indi-
cate a seismically active planet. An assessment of these detections suggests that the frequency of global seismic events below
approximately Mw = 3 is similar to that of terrestrial intraplate seismic activity, but there are fewer larger quakes; no quakes
exceeding Mw = 4 have been observed. The lander’s other instruments—two cameras, atmospheric pressure, temperature and
wind sensors, a magnetometer and a radiometer—have yielded much more than the intended supporting data for seismometer
noise characterization: magnetic field measurements indicate a local magnetic field that is ten-times stronger than orbital
estimates and meteorological measurements reveal a more dynamic atmosphere than expected, hosting baroclinic and gravity
waves and convective vortices. With the mission due to last for an entire Martian year or longer, these results will be built on by
further measurements by the InSight lander.
Origin : Files produced by the author(s)
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