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Mapping of a major paleodrainage system in eastern Libya using orbital imaging radar: The Kufrah River

hal.structure.identifierLaboratoire d'astrodynamique, d'astrophysique et d'aéronomie de bordeaux [L3AB]
hal.structure.identifierObservatoire aquitain des sciences de l'univers [OASU]
hal.structure.identifierLaboratoire d'Astrophysique de Bordeaux [Pessac] [LAB]
hal.structure.identifierUniversité Sciences et Technologies - Bordeaux 1 [UB]
dc.contributor.authorPAILLOU, Philippe
hal.structure.identifierInstitut International de Paléoprimatologie, Paléontologie Humaine : Évolution et Paléoenvironnement [IPHEP]
dc.contributor.authorSCHUSTER, Mathieu
hal.structure.identifierDepartment of Geography and Earth Sciences [DGES]
dc.contributor.authorTOOTH, Stephen
hal.structure.identifierJet Propulsion Laboratory [JPL]
dc.contributor.authorFARR, Tom
hal.structure.identifierEuropean Commission - Joint Research Centre [Ispra] [JRC]
dc.contributor.authorROSENQVIST, Ake
hal.structure.identifierLaboratoire d'astrodynamique, d'astrophysique et d'aéronomie de bordeaux [L3AB]
hal.structure.identifierObservatoire aquitain des sciences de l'univers [OASU]
hal.structure.identifierLaboratoire d'Astrophysique de Bordeaux [Pessac] [LAB]
hal.structure.identifierUniversité Sciences et Technologies - Bordeaux 1 [UB]
dc.contributor.authorLOPEZ, S.
hal.structure.identifierEnvironnement, Géo-ingénierie et Développement [EGID]
dc.contributor.authorMALEZIEUX, Jean-Marie
dc.date.issued2009-01
dc.identifier.issn0012-821X
dc.description.abstractEnOver the last few decades, remote sensing has revealed buried river channels in a number of regions worldwide, in many cases providing evidence of dramatic paleoenvironmental changes over Cenozoic time scales. Using orbital radar satellite imagery, we mapped a major paleodrainage system in eastern Libya, that could have linked the Kufrah Basin to the Mediterranean coast through the Sirt Basin, possibly as far back as the middle Miocene. Synthetic Aperture Radar images from the PALSAR sensor clearly reveal a 900 km-long river system, which starts with three main tributaries (north-eastern Tibesti, northern Uweinat and western Gilf Kebir/Abu Ras) that connect in the Kufrah oasis region. The river system then flows north through the Jebel Dalmah, and forms a large alluvial fan in the Sarir Dalmah. The sand dunes of the Calanscio Sand Sea prevent deep orbital radar penetration and preclude detailed reconstruction of any possible connection to the Mediterranean Sea, but a 300 km-long link to the Gulf of Sirt through the Wadi Sahabi paleochannel is likely. If this connection is confirmed, and its Miocene antiquity is established, then the Kufrah River, comparable in length to the Egyptian Nile, will have important implications for the understanding of the past environments and climates of northern Africa from the middle Miocene to the Holocene.
dc.language.isoen
dc.publisherElsevier
dc.title.enMapping of a major paleodrainage system in eastern Libya using orbital imaging radar: The Kufrah River
dc.typeArticle de revue
dc.identifier.doi10.1016/J.EPSL.2008.10.029
dc.subject.halPlanète et Univers [physics]/Astrophysique [astro-ph]/Planétologie et astrophysique de la terre [astro-ph.EP]
dc.subject.halPhysique [physics]/Astrophysique [astro-ph]/Planétologie et astrophysique de la terre [astro-ph.EP]
bordeaux.journalEarth and Planetary Science Letters
bordeaux.page327-333
bordeaux.volume277
bordeaux.peerReviewedoui
hal.identifierhal-00405365
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-00405365v1
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