Mostrar el registro sencillo del ítem

Insights into Titan's geology and hydrology based on enhanced image processing of Cassini RADAR data

hal.structure.identifierDivision of Geological and Planetary Sciences [Pasadena]
hal.structure.identifierAstrophysique Interprétation Modélisation [AIM (UMR7158 / UMR_E_9005 / UM_112)]
dc.contributor.authorLUCAS, Antoine
hal.structure.identifierDivision of Geological and Planetary Sciences [Pasadena]
hal.structure.identifierWeizmann Institute of Science [Rehovot, Israël]
dc.contributor.authorAHARONSON, Oded
hal.structure.identifierInstitut de Mathématiques de Bordeaux [IMB]
dc.contributor.authorDELEDALLE, Charles-Alban
hal.structure.identifierDivision of Geological and Planetary Sciences [Pasadena]
hal.structure.identifierDepartment of Astronomy [Ithaca]
dc.contributor.authorHAYES, Alexander G.
hal.structure.identifierAstrogeology Science Center [Flagstaff]
dc.contributor.authorKIRK, Randolph
hal.structure.identifierAstrogeology Science Center [Flagstaff]
dc.contributor.authorHOWINGTON-KRAUS, Elpitha
dc.date.accessioned2024-04-04T02:45:33Z
dc.date.available2024-04-04T02:45:33Z
dc.date.created2014-10-06
dc.date.issued2014-10-06
dc.identifier.issn2169-9097
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/191478
dc.description.abstractEnThe Cassini Synthetic Aperture Radar has been acquiring images of Titan's surface since October 2004. To date, 59% of Titan's surface has been imaged by radar, with significant regions imaged more than once. Radar data suffer from speckle noise hindering interpretation of small-scale features and comparison of reimaged regions for change detection. We present here a new image analysis technique that combines a denoising algorithm with mapping and quantitative measurements that greatly enhance the utility of the data and offers previously unattainable insights. After validating the technique, we demonstrate the potential improvement in understanding of surface processes on Titan and defining global mapping units, focusing on specific landforms including lakes, dunes, mountains, and fluvial features. Lake shorelines are delineated with greater accuracy. Previously unrecognized dissection by fluvial channels emerges beneath shallow methane cover. Dune wavelengths and interdune extents are more precisely measured. A significant refinement in producing digital elevation models is shown. Interactions of fluvial and aeolian processes with topographic relief is more precisely observed and understood than previously. Benches in bathymetry are observed in northern sea Ligeia Mare. Submerged valleys show similar depth suggesting that they are equilibrated with marine benches. These new observations suggest a liquid level increase in the northern sea, which may be due to changes on seasonal or longer timescales.
dc.language.isoen
dc.publisherWiley-Blackwell
dc.rights.urihttp://hal.archives-ouvertes.fr/licences/copyright/
dc.title.enInsights into Titan's geology and hydrology based on enhanced image processing of Cassini RADAR data
dc.typeArticle de revue
dc.identifier.doi10.1002/2013JE004584
dc.subject.halPhysique [physics]/Physique [physics]/Géophysique [physics.geo-ph]
dc.subject.halPlanète et Univers [physics]/Sciences de la Terre/Géophysique [physics.geo-ph]
dc.subject.halPlanète et Univers [physics]/Astrophysique [astro-ph]/Astrophysique stellaire et solaire [astro-ph.SR]
dc.subject.halPhysique [physics]/Astrophysique [astro-ph]/Astrophysique stellaire et solaire [astro-ph.SR]
dc.subject.halSciences de l'ingénieur [physics]/Traitement du signal et de l'image
dc.subject.halInformatique [cs]/Traitement du signal et de l'image
bordeaux.journalJournal of Geophysical Research. Planets
bordeaux.pageonline version
bordeaux.hal.laboratoriesInstitut de Mathématiques de Bordeaux (IMB) - UMR 5251*
bordeaux.institutionUniversité de Bordeaux
bordeaux.institutionBordeaux INP
bordeaux.institutionCNRS
bordeaux.peerReviewedoui
hal.identifierhal-01072249
hal.version1
hal.popularnon
hal.audienceInternationale
dc.subject.itTitan
dc.subject.itCassini
dc.subject.itSAR
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-01072249v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Journal%20of%20Geophysical%20Research.%20Planets&rft.date=2014-10-06&rft.spage=online%20version&rft.epage=online%20version&rft.eissn=2169-9097&rft.issn=2169-9097&rft.au=LUCAS,%20Antoine&AHARONSON,%20Oded&DELEDALLE,%20Charles-Alban&HAYES,%20Alexander%20G.&KIRK,%20Randolph&rft.genre=article


Archivos en el ítem

ArchivosTamañoFormatoVer

No hay archivos asociados a este ítem.

Este ítem aparece en la(s) siguiente(s) colección(ones)

Mostrar el registro sencillo del ítem