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dc.contributor.authorSizemore, H. G.
dc.contributor.authorSchmidt, B. E.
dc.contributor.authorBuczkowski, D. A.
dc.contributor.authorSori, M. M.
dc.contributor.authorCastillo‐Rogez, J. C.
dc.contributor.authorBerman, D. C.
dc.contributor.authorAhrens, C.
dc.contributor.authorChilton, H. T.
dc.contributor.authorHughson, K. H. G.
dc.contributor.authorDuarte, K.
dc.contributor.authorOtto, K. A.
dc.contributor.authorBland, M. T.
dc.contributor.authorNeesemann, A.
dc.contributor.authorScully, J. E. C.
dc.contributor.authorCrown, D. A.
dc.contributor.authorMest, S. C.
dc.contributor.authorWilliams, D. A.
dc.contributor.authorPlatz, T.
dc.contributor.authorSchenk, P.
dc.contributor.authorLandis, M. E.
dc.contributor.authorMarchi, S.
dc.contributor.authorSchorghofer, N.
dc.contributor.authorQuick, L. C.
dc.contributor.authorPrettyman, T. H.
dc.contributor.authorDe Sanctis, M. C.
dc.contributor.authorNass, A.
dc.contributor.authorThangjam, G.
dc.contributor.authorNathues, A.
dc.contributor.authorRussell, C. T.
dc.contributor.authorRaymond, C. A.
dc.date.accessioned2019-09-19T02:45:42Z
dc.date.available2019-09-19T02:45:42Z
dc.date.issued2019-07-02
dc.identifier.citationSizemore, H. G., Schmidt, B. E., Buczkowski, D. A., Sori, M. M., Castillo-Rogez, J. C., Berman, D. C., et al. (2019). A global inventory of ice-related morphological features on dwarf planet Ceres: Implications for the evolution and current state of the cryosphere. Journal of Geophysical Research: Planets, 124,1650–1689. https://doi.org/10.1029/2018JE005699en_US
dc.identifier.issn2169-9097
dc.identifier.doi10.1029/2018je005699
dc.identifier.urihttp://hdl.handle.net/10150/634504
dc.description.abstractWe present a comprehensive global catalog of the geomorphological features with clear or potential relevance to subsurface ice identified during the Dawn spacecraft's primary and first extended missions at Ceres. We define eight broad feature classes and describe analyses supporting their genetic links to subsurface ice. These classes include relaxed craters; central pit craters; large domes; small mounds; lobate landslides and ejecta; pitted materials; depressions and scarps; and fractures, grooves, and channels. Features in all classes are widely distributed on the dwarf planet, consistent with multiple lines of observational evidence that ice is a key component of Ceres' crust. Independent analyses of multiple feature types suggest rheological and compositional layering may be common in the upper similar to 10 km of the crust. Clustering of features indicates that ice concentration is heterogeneous on nearly all length scales, from similar to 1 km to hundreds of kilometers. Impacts are likely the key driver of heterogeneity, causing progressive devolatilization of the low latitude and midlatitude crust on billion-year timescales but also producing localized enhancements in near surface ice content via excavation of deep ice-rich material and possible facilitation of cryomagmatic and cryovolcanic activity. Impacts and landslides may be the dominant mechanism for ice loss on modern Ceres. Our analysis suggests specific locations where future high-resolution imaging can be used to probe (1) current volatile loss rates and (2) the history of putative cryomagmatic and cryovolcanic features. The Cerean cryosphere and its unique morphology promise to be a rich subject of ongoing research for years to come.en_US
dc.description.sponsorshipNASA's Dawn at Ceres Guest Investigator Program; NASA Discovery Program Officeen_US
dc.language.isoenen_US
dc.publisherAMER GEOPHYSICAL UNIONen_US
dc.rightsCopyright © 2018. American Geophysical Union. All Rights Reserved.en_US
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/
dc.subjectCeresen_US
dc.subjectgeomorphologyen_US
dc.subjecticeen_US
dc.subjectcryosphereen_US
dc.titleA Global Inventory of Ice‐Related Morphological Features on Dwarf Planet Ceres: Implications for the Evolution and Current State of the Cryosphereen_US
dc.typeArticleen_US
dc.contributor.departmentUniv Arizona, Lunar & Planetary Laben_US
dc.identifier.journalJOURNAL OF GEOPHYSICAL RESEARCH-PLANETSen_US
dc.description.note6 month embargo; published online: 2 July 2019en_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.volume124
dc.source.issue7
dc.source.beginpage1650-1689


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