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Variable downcanyon morphology controlling the recent activity of shelf-incised submarine canyons (Alboran Sea, western Mediterranean)

2024-05Artigo científico Acesso aberto
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datacite.subject.sdg14:Proteger a Vida Marinha
datacite.subject.sdg13:Ação Climática
datacite.subject.sdg11:Cidades e Comunidades Sustentáveis
dc.contributor.authorCerrillo-Escoriza, J.
dc.contributor.authorLobo, F. J.
dc.contributor.authorPuga-Bernabéu, Á.
dc.contributor.authorBárcenas, P.
dc.contributor.authorMendes, Isabel Maria de Paiva Pinto
dc.contributor.authorPérez-Asensio, J. N.
dc.contributor.authorDurán, R.
dc.contributor.authorAndersen, T. J.
dc.contributor.authorCarrión-Torrente, Á.
dc.contributor.authorGarcía, M.
dc.contributor.authorLópez-Quirós, A.
dc.contributor.authorLuján, M.
dc.contributor.authorMena, A.
dc.contributor.authorSánchez-Guillamón, O.
dc.contributor.authorSánchez, M. J.
dc.date.accessioned2026-04-13T13:19:31Z
dc.date.available2026-04-13T13:19:31Z
dc.date.issued2024-05
dc.description.abstractThis research aims to distinguish genetic sedimentary processes building canyon geomorphological patterns and the factors driving different sedimentary activities in two nearby Mediterranean shelf-incised submarine canyons (Carchuna and Motril) that exhibit different degrees of incision on the narrow margin of the northern Alboran Sea. The straight Carchuna Canyon incises the shelf up to 200 m off the coastline and exhibit steep canyon walls featuring narrow terraces, muddy sands with high contents of organic matter along the thalweg, and transported shelf benthic foraminifera in distal settings. The Motril Canyon head is wider and incises the shelf edge, ca. 2 km off the coastline. It exhibits a sinuous morphology and less steep walls, wider terraces, and higher sedimentation rates with muddy sediments along the thalweg. In both canyons, cross-section relief, width, incision, and area decrease downslope, although these parameters increase locally. The downslope variations of geomorphological parameters are attributed to enhanced erosional/depositional processes promoted by tectonically controlled abrupt changes of the axial channel orientation. The degree of shelf incision, the location of the canyon heads in relation with the local sediment sources, and the seasonally variable hydrodynamic regimes determine the different degrees of recent canyon activity. The Motril Canyon is interpreted as a mature system that reflects episodic activity, collecting fine-grained sediments from the nearby Guadalfeo River. The Carchuna Canyon exhibits a youthful developmental stage whose activity is more continuous and involves sediment trapping of littoral cells and continuous downslope sand transport.eng
dc.description.sponsorshipDL57/2016/CP1361/CT0009, CEECINST/00052/2021/CP2792/CT0012 and projects UID/0350/2020 CIMA
dc.identifier.doi10.1016/j.geomorph.2024.109127
dc.identifier.issn0169-555X
dc.identifier.urihttp://hdl.handle.net/10400.1/28658
dc.language.isoeng
dc.peerreviewedyes
dc.publisherElsevier
dc.relationAquatic Research Infrastructure Network
dc.relation.ispartofGeomorphology
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/
dc.subjectSubmarine canyons
dc.subjectSediment analysis
dc.subjectUnderwater imagery
dc.subjectSeafloor mapping
dc.subjectSediment transport
dc.subjectAlboran Sea
dc.titleVariable downcanyon morphology controlling the recent activity of shelf-incised submarine canyons (Alboran Sea, western Mediterranean)eng
dc.typejournal article
dspace.entity.typePublication
oaire.awardNumberLA/P/0069/2020
oaire.awardTitleAquatic Research Infrastructure Network
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/LA%2FP%2F0069%2F2020/PT
oaire.citation.startPage109127
oaire.citation.titleGeomorphology
oaire.citation.volume453
oaire.fundingStream6817 - DCRRNI ID
oaire.versionhttp://purl.org/coar/version/c_970fb48d4fbd8a85
person.familyNameMendes
person.givenNameIsabel Maria de Paiva Pinto
person.identifier.ciencia-id5C15-242C-FDC0
person.identifier.orcid0000-0001-7004-7910
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
relation.isAuthorOfPublicationc34b90c6-5a34-472c-a658-1d2329a59936
relation.isAuthorOfPublication.latestForDiscoveryc34b90c6-5a34-472c-a658-1d2329a59936
relation.isProjectOfPublication5af011f9-3888-449a-a18c-d08b59e87091
relation.isProjectOfPublication.latestForDiscovery5af011f9-3888-449a-a18c-d08b59e87091

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