Show simple item record

dc.contributor.authorDaly, M G
dc.contributor.authorBarnouin, O S
dc.contributor.authorSeabrook, J A
dc.contributor.authorRoberts, J
dc.contributor.authorDickinson, C
dc.contributor.authorWalsh, K J
dc.contributor.authorJawin, E R
dc.contributor.authorPalmer, E E
dc.contributor.authorGaskell, R
dc.contributor.authorWeirich, J
dc.contributor.authorHaltigin, T
dc.contributor.authorGaudreau, D
dc.contributor.authorBrunet, C
dc.contributor.authorCunningham, G
dc.contributor.authorMichel, P
dc.contributor.authorZhang, Y
dc.contributor.authorBallouz, R-L
dc.contributor.authorNeumann, G
dc.contributor.authorPerry, M E
dc.contributor.authorPhilpott, L
dc.contributor.authorAl Asad, M M
dc.contributor.authorJohnson, C L
dc.contributor.authorAdam, C D
dc.contributor.authorLeonard, J M
dc.contributor.authorGeeraert, J L
dc.contributor.authorGetzandanner, K
dc.contributor.authorNolan, M C
dc.contributor.authorDaly, R T
dc.contributor.authorBierhaus, E B
dc.contributor.authorMazarico, E
dc.contributor.authorRozitis, B
dc.contributor.authorRyan, A J
dc.contributor.authorDellaGiustina, D N
dc.contributor.authorRizk, B
dc.contributor.authorSusorney, H C M
dc.contributor.authorEnos, H L
dc.contributor.authorLauretta, D S
dc.date.accessioned2021-01-28T19:58:00Z
dc.date.available2021-01-28T19:58:00Z
dc.date.issued2020-10-08
dc.identifier.citationDaly, M. G., Barnouin, O. S., Seabrook, J. A., Roberts, J., Dickinson, C., Walsh, K. J., ... & Lauretta, D. S. (2020). Hemispherical differences in the shape and topography of asteroid (101955) Bennu. Science Advances, 6(41), eabd3649.en_US
dc.identifier.issn2375-2548
dc.identifier.pmid33033038
dc.identifier.doi10.1126/sciadv.abd3649
dc.identifier.urihttp://hdl.handle.net/10150/651286
dc.description.abstractWe investigate the shape of near-Earth asteroid (101955) Bennu by constructing a high-resolution (20 cm) global digital terrain model from laser altimeter data. By modeling the northern and southern hemispheres separately, we find that longitudinal ridges previously identified in the north extend into the south but are obscured there by surface material. In the south, more numerous large boulders effectively retain surface materials and imply a higher average strength at depth to support them. The north has fewer large boulders and more evidence of boulder dynamics (toppling and downslope movement) and surface flow. These factors result in Bennu's southern hemisphere being rounder and smoother, whereas its northern hemisphere has higher slopes and a less regular shape. We infer an originally asymmetric distribution of large boulders followed by a partial disruption, leading to wedge formation in Bennu's history.en_US
dc.language.isoenen_US
dc.publisherAMER ASSOC ADVANCEMENT SCIENCEen_US
dc.rightsCopyright © 2020 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. Distributed under a Creative Commons Attribution License 4.0 (CC BY).en_US
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/en_US
dc.titleHemispherical differences in the shape and topography of asteroid (101955) Bennuen_US
dc.typeArticleen_US
dc.contributor.departmentUniv Arizona, Lunar & Planetary Laben_US
dc.identifier.journalSCIENCE ADVANCESen_US
dc.description.noteOpen access journalen_US
dc.description.collectioninformationThis item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at repository@u.library.arizona.edu.en_US
dc.eprint.versionFinal published versionen_US
dc.source.journaltitleScience advances
dc.source.volume6
dc.source.issue41
refterms.dateFOA2021-01-28T19:58:11Z
dc.source.countryUnited States


Files in this item

Thumbnail
Name:
eabd3649.full.pdf
Size:
6.815Mb
Format:
PDF
Description:
Final Published Version

This item appears in the following Collection(s)

Show simple item record

Copyright © 2020 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. Distributed under a Creative Commons Attribution License 4.0 (CC BY).
Except where otherwise noted, this item's license is described as Copyright © 2020 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. Distributed under a Creative Commons Attribution License 4.0 (CC BY).