Afficher la notice abrégée

Backscatter modelling and inversion from Cassini/SAR data: Implications for Titan’s sand seas properties and climatic conditions

hal.structure.identifierAstrophysique Interprétation Modélisation [AIM (UMR7158 / UMR_E_9005 / UM_112)]
dc.contributor.authorLUCAS, Antoine
hal.structure.identifierAstrophysique Interprétation Modélisation [AIM (UMR7158 / UMR_E_9005 / UM_112)]
dc.contributor.authorRODRIGUEZ, Sebastien
hal.structure.identifierAstrophysique Interprétation Modélisation [AIM (UMR7158 / UMR_E_9005 / UM_112)]
dc.contributor.authorLEMONNIER, Florentin
hal.structure.identifierASP 2015
dc.contributor.authorPAILLOU, Philippe
hal.structure.identifierPLANETO - LATMOS
dc.contributor.authorLE GALL, Alice
hal.structure.identifierInstitut de Physique du Globe de Paris [IPGP]
dc.contributor.authorNARTEAU, Clement
dc.date.conference2015-12-14
dc.description.abstractEnSand seas on Titan may reflect the present and past climatic conditions. Understanding the morphodynamics and physicochemical properties of Titan’s dunes is therefore essential for a better comprehension of the climatic and geological history of the largest Saturn’s moon. We derived quantitatively surface properties (texture, composition) from the modelling of microwave backscattered signal and Monte Carlo inversion of despeckled Cassini/SAR data over the equatorial sand seas. We show that dunes and inter-dunes have significantly different physical properties. Absorption is more efficient in the dunes compared to the inter-dunes. The inter-dunes are smoother with an higher dielectric constant than the dunes. Considering the composition, the inter-dunes are in between the dunes and the bright inselbergs, suggesting the presence of a shallow layer of sediment in between the dunes. Additionally potential secondary bedforms may have been detected. Implications for dune morphodynamics, sediment inventory and climatic conditions occurring on Titan will be discussed.
dc.language.isoen
dc.title.enBackscatter modelling and inversion from Cassini/SAR data: Implications for Titan’s sand seas properties and climatic conditions
dc.typeAutre communication scientifique (congrès sans actes - poster - séminaire...)
dc.subject.halPlanète et Univers [physics]/Astrophysique [astro-ph]/Planétologie et astrophysique de la terre [astro-ph.EP]
dc.subject.halPlanète et Univers [physics]/Astrophysique [astro-ph]/Astrophysique stellaire et solaire [astro-ph.SR]
bordeaux.pageP13B-2130
bordeaux.conference.titleAGU Fall Meeting 2015
bordeaux.countryUS
bordeaux.conference.citySan Francisco
bordeaux.peerReviewedoui
hal.identifierinsu-01249169
hal.version1
hal.invitednon
hal.proceedingsnon
hal.conference.end2015-12-18
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//insu-01249169v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.spage=P13B-2130&rft.epage=P13B-2130&rft.au=LUCAS,%20Antoine&RODRIGUEZ,%20Sebastien&LEMONNIER,%20Florentin&PAILLOU,%20Philippe&LE%20GALL,%20Alice&rft.genre=conference


Fichier(s) constituant ce document

FichiersTailleFormatVue

Il n'y a pas de fichiers associés à ce document.

Ce document figure dans la(les) collection(s) suivante(s)

Afficher la notice abrégée