The Morphometry of Impact Craters on Bennu

R. T. Daly; E. B. Bierhaus; O. S. Barnouin; M. G. Daly; J. A. Seabrook; J. H. Roberts; C. M. Ernst; M. E. Perry; H. Nair; R. C. Espiritu; E. E. Palmer; R. W. Gaskell; J. R. Weirich; H. C.M. Susorney; C. L. Johnson; K. J. Walsh; Michael Craig Nolan; E. R. Jawin; P. Michel; D. Trang; D. S. Lauretta

doi:10.1029/2020GL089672

The Morphometry of Impact Craters on Bennu

R. T. Daly
, E. B. Bierhaus
, O. S. Barnouin
, M. G. Daly
, J. A. Seabrook
, J. H. Roberts
, C. M. Ernst
, M. E. Perry
, H. Nair
, R. C. Espiritu
, E. E. Palmer
, R. W. Gaskell
, J. R. Weirich
, H. C.M. Susorney
, C. L. Johnson
, K. J. Walsh
, Michael Craig Nolan
, E. R. Jawin
, P. Michel
, D. Trang

D. S. Lauretta

Research output: Contribution to journal › Article › peer-review

26 Scopus citations

Abstract

Bennu is an ~500-m-diameter rubble-pile asteroid that is the target of detailed study by the Origins, Spectral Interpretation, Resource Identification, and Security–Regolith Explorer (OSIRIS-REx) mission. Here we use data from the OSIRIS-REx Laser Altimeter to assess depth-to-diameter ratios (d/D) of 108 impact craters larger than 10 m in diameter. The d/D of craters on Bennu ranges from 0.02 to 0.19. The mean is 0.10 ± 0.03. The smallest craters show the broadest range in d/D, consistent with d/D measurements on other asteroids. A few craters have central mounds, which is interpreted as evidence that a more competent substrate lies a few meters beneath them. The range of d/D narrows as crater size increases, with craters larger than 80 m tending toward smaller d/D. At large scales, increases in target strength with depth, combined with target curvature, may affect crater morphometry.

Original language	English (US)
Article number	e2020GL089672
Journal	Geophysical Research Letters
Volume	47
Issue number	24
DOIs	https://doi.org/10.1029/2020GL089672
State	Published - Dec 28 2020

Keywords

Bennu
OSIRIS-REx
crater morphometry
depth-diameter ratio
impact crater
small body

ASJC Scopus subject areas

Geophysics
General Earth and Planetary Sciences

Access to Document

10.1029/2020GL089672

Cite this

Daly, R. T., Bierhaus, E. B., Barnouin, O. S., Daly, M. G., Seabrook, J. A., Roberts, J. H., Ernst, C. M., Perry, M. E., Nair, H., Espiritu, R. C., Palmer, E. E., Gaskell, R. W., Weirich, J. R., Susorney, H. C. M., Johnson, C. L., Walsh, K. J., Nolan, M. C., Jawin, E. R., Michel, P., ... Lauretta, D. S. (2020). The Morphometry of Impact Craters on Bennu. Geophysical Research Letters, 47(24), Article e2020GL089672. https://doi.org/10.1029/2020GL089672

Daly, RT, Bierhaus, EB, Barnouin, OS, Daly, MG, Seabrook, JA, Roberts, JH, Ernst, CM, Perry, ME, Nair, H, Espiritu, RC, Palmer, EE, Gaskell, RW, Weirich, JR, Susorney, HCM, Johnson, CL, Walsh, KJ, Nolan, MC, Jawin, ER, Michel, P, Trang, D & Lauretta, DS 2020, 'The Morphometry of Impact Craters on Bennu', Geophysical Research Letters, vol. 47, no. 24, e2020GL089672. https://doi.org/10.1029/2020GL089672

@article{b4995fe4ab5e4171881ff5229591e1e0,

title = "The Morphometry of Impact Craters on Bennu",

abstract = "Bennu is an \textasciitilde{}500-m-diameter rubble-pile asteroid that is the target of detailed study by the Origins, Spectral Interpretation, Resource Identification, and Security–Regolith Explorer (OSIRIS-REx) mission. Here we use data from the OSIRIS-REx Laser Altimeter to assess depth-to-diameter ratios (d/D) of 108 impact craters larger than 10 m in diameter. The d/D of craters on Bennu ranges from 0.02 to 0.19. The mean is 0.10 ± 0.03. The smallest craters show the broadest range in d/D, consistent with d/D measurements on other asteroids. A few craters have central mounds, which is interpreted as evidence that a more competent substrate lies a few meters beneath them. The range of d/D narrows as crater size increases, with craters larger than 80 m tending toward smaller d/D. At large scales, increases in target strength with depth, combined with target curvature, may affect crater morphometry.",

keywords = "Bennu, OSIRIS-REx, crater morphometry, depth-diameter ratio, impact crater, small body",

author = "Daly, \{R. T.\} and Bierhaus, \{E. B.\} and Barnouin, \{O. S.\} and Daly, \{M. G.\} and Seabrook, \{J. A.\} and Roberts, \{J. H.\} and Ernst, \{C. M.\} and Perry, \{M. E.\} and H. Nair and Espiritu, \{R. C.\} and Palmer, \{E. E.\} and Gaskell, \{R. W.\} and Weirich, \{J. R.\} and Susorney, \{H. C.M.\} and Johnson, \{C. L.\} and Walsh, \{K. J.\} and Nolan, \{Michael Craig\} and Jawin, \{E. R.\} and P. Michel and D. Trang and Lauretta, \{D. S.\}",

note = "Publisher Copyright: {\textcopyright} 2020. The Authors.",

year = "2020",

month = dec,

day = "28",

doi = "10.1029/2020GL089672",

language = "English (US)",

volume = "47",

journal = "Geophysical Research Letters",

issn = "0094-8276",

publisher = "John Wiley and Sons Inc.",

number = "24",

}

TY - JOUR

T1 - The Morphometry of Impact Craters on Bennu

AU - Daly, R. T.

AU - Bierhaus, E. B.

AU - Barnouin, O. S.

AU - Daly, M. G.

AU - Seabrook, J. A.

AU - Roberts, J. H.

AU - Ernst, C. M.

AU - Perry, M. E.

AU - Nair, H.

AU - Espiritu, R. C.

AU - Palmer, E. E.

AU - Gaskell, R. W.

AU - Weirich, J. R.

AU - Susorney, H. C.M.

AU - Johnson, C. L.

AU - Walsh, K. J.

AU - Nolan, Michael Craig

AU - Jawin, E. R.

AU - Michel, P.

AU - Trang, D.

AU - Lauretta, D. S.

PY - 2020/12/28

Y1 - 2020/12/28

N2 - Bennu is an ~500-m-diameter rubble-pile asteroid that is the target of detailed study by the Origins, Spectral Interpretation, Resource Identification, and Security–Regolith Explorer (OSIRIS-REx) mission. Here we use data from the OSIRIS-REx Laser Altimeter to assess depth-to-diameter ratios (d/D) of 108 impact craters larger than 10 m in diameter. The d/D of craters on Bennu ranges from 0.02 to 0.19. The mean is 0.10 ± 0.03. The smallest craters show the broadest range in d/D, consistent with d/D measurements on other asteroids. A few craters have central mounds, which is interpreted as evidence that a more competent substrate lies a few meters beneath them. The range of d/D narrows as crater size increases, with craters larger than 80 m tending toward smaller d/D. At large scales, increases in target strength with depth, combined with target curvature, may affect crater morphometry.

AB - Bennu is an ~500-m-diameter rubble-pile asteroid that is the target of detailed study by the Origins, Spectral Interpretation, Resource Identification, and Security–Regolith Explorer (OSIRIS-REx) mission. Here we use data from the OSIRIS-REx Laser Altimeter to assess depth-to-diameter ratios (d/D) of 108 impact craters larger than 10 m in diameter. The d/D of craters on Bennu ranges from 0.02 to 0.19. The mean is 0.10 ± 0.03. The smallest craters show the broadest range in d/D, consistent with d/D measurements on other asteroids. A few craters have central mounds, which is interpreted as evidence that a more competent substrate lies a few meters beneath them. The range of d/D narrows as crater size increases, with craters larger than 80 m tending toward smaller d/D. At large scales, increases in target strength with depth, combined with target curvature, may affect crater morphometry.

KW - Bennu

KW - OSIRIS-REx

KW - crater morphometry

KW - depth-diameter ratio

KW - impact crater

KW - small body

UR - https://www.scopus.com/pages/publications/85098221364

UR - https://www.scopus.com/pages/publications/85098221364#tab=citedBy

U2 - 10.1029/2020GL089672

DO - 10.1029/2020GL089672

M3 - Article

SN - 0094-8276

VL - 47

JO - Geophysical Research Letters

JF - Geophysical Research Letters

IS - 24

M1 - e2020GL089672

ER -

The Morphometry of Impact Craters on Bennu

Abstract

Keywords

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this