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dc.contributor.authorLimaye, Ajay B. S.
dc.contributor.authorAharonson, Oded
dc.contributor.authorPerron, J. Taylor
dc.date.accessioned2014-03-14T15:26:53Z
dc.date.available2014-03-14T15:26:53Z
dc.date.issued2012-06
dc.date.submitted2012-05
dc.identifier.issn0148-0227
dc.identifier.urihttp://hdl.handle.net/1721.1/85622
dc.description.abstractThe Mars polar layered deposits (PLD) likely hold an extensive record of recent climate during a period of high-amplitude orbit and obliquity cycles. Previous work has detected limited evidence for orbital signatures within PLD stratigraphy, but data from the High Resolution Imaging Science Experiment (HiRISE) permit renewed analysis of PLD stratigraphy at sub-meter scale. Topography derived from HiRISE images using stereogrammetry resolves beds previously detectable only as alternating light and dark bands in visible images. We utilize these data to measure the thickness of individual beds within the PLD, corrected for non-horizontal bed orientation. Stratigraphic columns and bed thickness profiles are presented for two sites within the NPLD, and show several sets of finely bedded units 1–2 m thick; isolated marker beds 3–4 m thick; and undifferentiated sections. Bed thickness measurements for three sites within the SPLD exhibit only one bed type based on albedo and morphology, and bed thicknesses have a larger mean and variance compared to measurements for the NPLD. Power spectra of brightness and slope derived along the measured stratigraphic sections confirm the regularity of NPLD fine bed thickness, and the lack of a dominant SPLD bed thickness. The regularity of fine bed thickness of the NPLD is consistent with quasiperiodic bed formation, albeit with unknown temporal period; the SPLD thickness measurements show no such regularity.en_US
dc.description.sponsorshipSociety of Petroleum Engineers (U.S.) (van Wingen Fellowship)en_US
dc.description.sponsorshipW. M. Keck Foundationen_US
dc.description.sponsorshipUnited States. National Aeronautics and Space Administration (Mars Data Analysis Program Award 65P-1089493)en_US
dc.language.isoen_US
dc.publisherAmerican Geophysical Union (AGU)en_US
dc.relation.isversionofhttp://dx.doi.org/10.1029/2011je003961en_US
dc.rightsArticle is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.en_US
dc.sourceMIT web domainen_US
dc.titleDetailed stratigraphy and bed thickness of the Mars north and south polar layered depositsen_US
dc.typeArticleen_US
dc.identifier.citationLimaye, Ajay B. S., Oded Aharonson, and J. Taylor Perron. “Detailed Stratigraphy and Bed Thickness of the Mars North and South Polar Layered Deposits.” Journal of Geophysical Research 117, no. E6 (2012). Copyright © 2012 American Geophysical Unionen_US
dc.contributor.departmentMassachusetts Institute of Technology. Department of Earth, Atmospheric, and Planetary Sciencesen_US
dc.contributor.mitauthorPerron, J. Tayloren_US
dc.relation.journalJournal of Geophysical Researchen_US
dc.eprint.versionFinal published versionen_US
dc.type.urihttp://purl.org/eprint/type/JournalArticleen_US
eprint.statushttp://purl.org/eprint/status/PeerRevieweden_US
dspace.orderedauthorsLimaye, Ajay B. S.; Aharonson, Oded; Perron, J. Tayloren_US
dc.identifier.orcidhttps://orcid.org/0000-0002-0404-8701
mit.licensePUBLISHER_POLICYen_US


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