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Rock Size-Frequency Distributions at the InSight Landing Site, Mars

Golombek, M. and Trussell, A. and Williams, Nathan and Charalambous, C. and Abarca, H.E. and Warner, N. and Deahn, M. and Trautmann, M. and Crocco, R. and Grant, J.A. and Hauber, Ernst and Deen, R. (2021) Rock Size-Frequency Distributions at the InSight Landing Site, Mars. Earth and Space Science, 8 (12), e2021EA001959. American Geophysical Union (AGU). doi: 10.1029/2021EA001959. ISSN 2333-5084.

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Official URL: https://agupubs.onlinelibrary.wiley.com/doi/10.1029/2021EA001959

Abstract

Rocks around the InSight lander were measured in lander orthoimages of the near field (<10 m), in panoramas of the far field (<40 m), and in a high-resolution orbital image around the lander (1 km2). The cumulative fractional area versus diameter size-frequency distributions for four areas in the near field fall on exponential model curves used for estimating hazards for landing spacecraft. The rock abundance varies in the near field from 0.6% for the sand and pebble-rich area to the east within Homestead hollow to ∼3–5% for the progressively rockier areas to the south, north, and west. The rock abundance of the entire near field is just over 3%, which falls between that at the Phoenix (2%) and Spirit (5%) landing sites. Rocks in the far field (<40 m) that could be identified in both the surface panorama and a high-resolution orbital image fall on the same exponential model curve as the average near-field rocks. Rocks measured in a high-resolution orbital image (27.5 cm/pixel) within ∼500 m of the lander that includes several rocky ejecta craters fall on 4–5% exponential model curves, similar to the northern and western near-field areas. As a result, the rock abundances observed from orbit fall on the same exponential model rock abundance curves as those viewed from the surface. These rock abundance measurements around the lander are consistent with thermal imaging estimates over larger pixel areas as well as expectations from fragmentation theory of an impacted Amazonian/Hesperian lava flow.

Item URL in elib:https://elib.dlr.de/148012/
Document Type:Article
Title:Rock Size-Frequency Distributions at the InSight Landing Site, Mars
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Golombek, M.jet propulsion laboratory, pasadena, ca, usahttps://orcid.org/0000-0002-1928-2293
Trussell, A.jet propulsion laboratory, pasadena, ca, usaUNSPECIFIED
Williams, NathanJet Propulsion Laboratory, California Institute of Technology, Pasadena, USAUNSPECIFIED
Charalambous, C.Imperial College, London, United KingdomUNSPECIFIED
Abarca, H.E.Jet Propulsion Laboratory, Pasadena, CA, USAUNSPECIFIED
Warner, N.SUNY at GeneseoUNSPECIFIED
Deahn, M.SUNY at GeneseoUNSPECIFIED
Trautmann, M.Jet Propulsion Laboratory, Pasadena, CA, USAUNSPECIFIED
Crocco, R.Jet Propulsion Laboratory, Pasadena, CA, USAUNSPECIFIED
Grant, J.A.Smithsonian Institute, Washington, USAUNSPECIFIED
Hauber, ErnstErnst.Hauber (at) dlr.dehttps://orcid.org/0000-0002-1375-304X
Deen, R.Jet Propulsion Laboratory, California Institute of Technology, Pasadena, USAUNSPECIFIED
Date:November 2021
Journal or Publication Title:Earth and Space Science
Refereed publication:Yes
Open Access:Yes
Gold Open Access:Yes
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:8
DOI :10.1029/2021EA001959
Page Range:e2021EA001959
Publisher:American Geophysical Union (AGU)
ISSN:2333-5084
Status:Published
Keywords:Mas, Geology, Rocks, Lander, InSight
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Space Exploration
DLR - Research area:Raumfahrt
DLR - Program:R EW - Space Exploration
DLR - Research theme (Project):R - Project InSight - HP3, R - Project Mars Express HRSC
Location: Berlin-Adlershof
Institutes and Institutions:Institute of Planetary Research > Planetary Geology
Deposited By: Hauber, Ernst
Deposited On:06 Jan 2022 11:49
Last Modified:06 Jan 2022 11:49

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