A study of the TEX86 paleothermometer in the water column and sediments of the Santa Barbara Basin, California

Particulate organic matter collected during a 2-year period, as part of an ongoing sediment trap study, and a high-resolution sediment record from 1850 to 1987 A.D. from the Santa Barbara Basin were analyzed for TEX86, a temperature proxy based on marine crenarchaeotal membrane lipids. Highest fluxe...

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Autores: Huguet, Carme|||0000-0001-8025-2010, Schimmelmann, Arndt, Thunell, Robert, Lourens, Lucas J., Sinninghe Damsté, Jaap S., Schouten, Stefan
Tipo de recurso: artículo
Fecha de publicación:2007
País:España
Institución:Universitat Autònoma de Barcelona
Repositorio:Dipòsit Digital de Documents de la UAB
Idioma:inglés
OAI Identifier:oai:ddd.uab.cat:25432
Acceso en línea:https://ddd.uab.cat/record/25432
https://dx.doi.org/urn:doi:10.1029/2006PA001310
Access Level:acceso abierto
Palabra clave:Santa Barbara Basin
Paleoclimatology
Marine organic chemistry
Geochemical tracers
Sea surface temperature
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spelling A study of the TEX86 paleothermometer in the water column and sediments of the Santa Barbara Basin, CaliforniaHuguet, Carme|||0000-0001-8025-2010Schimmelmann, ArndtThunell, RobertLourens, Lucas J.Sinninghe Damsté, Jaap S.Schouten, StefanSanta Barbara BasinPaleoclimatologyMarine organic chemistryGeochemical tracersSea surface temperatureParticulate organic matter collected during a 2-year period, as part of an ongoing sediment trap study, and a high-resolution sediment record from 1850 to 1987 A.D. from the Santa Barbara Basin were analyzed for TEX86, a temperature proxy based on marine crenarchaeotal membrane lipids. Highest fluxes of crenarchaeotal lipids in the water column were found in May-June 1996 and from October 1996 to January 1997 and, in general, showed a good correlation with mass fluxes. TEX86 reconstructed temperatures from the sediment trap series ranged from 8 to 11°C and were usually substantially lower than sea surface temperatures (SST), indicating that unlike in previous studies, the TEX86 corresponds to subsurface temperatures, likely between 100 and 150 m. TEX86 temperature variations observed in trap samples were not coupled to changes in SST or deep-water temperatures and only to some degree with crenarchaeotal lipid fluxes. This suggests that a complex combination of different depth origins and seasonal growth periods of Crenarchaeota contributed to the variations in TEX86 signal during the annual cycle. TEX86 temperatures in the two sediment cores studied (8-13°C) were also substantially lower than those of instrumental SST records (14-17.5°C) confirming that TEX86 records a subsurface temperature signal in the Santa Barbara Basin. This result highlights the importance of performing calibration studies using sediment traps and core tops before applying the TEX86 temperature proxy in a given study area. 22007-01-0120072007-01-01Articlehttp://purl.org/coar/resource_type/c_6501VoRhttp://purl.org/coar/version/c_970fb48d4fbd8a85info:eu-repo/semantics/articleapplication/pdfhttps://ddd.uab.cat/record/25432https://dx.doi.org/urn:doi:10.1029/2006PA001310reponame:Dipòsit Digital de Documents de la UABinstname:Universitat Autònoma de BarcelonaInglésengopen accesshttp://purl.org/coar/access_right/c_abf2Aquest material està protegit per drets d'autor i/o drets afins. Podeu utilitzar aquest material en funció del que permet la legislació de drets d'autor i drets afins d'aplicació al vostre cas. Per a d'altres usos heu d'obtenir permís del(s) titular(s) de drets.https://rightsstatements.org/vocab/InC/1.0/info:eu-repo/semantics/openAccessoai:ddd.uab.cat:254322026-06-06T12:50:31Z
dc.title.none.fl_str_mv A study of the TEX86 paleothermometer in the water column and sediments of the Santa Barbara Basin, California
title A study of the TEX86 paleothermometer in the water column and sediments of the Santa Barbara Basin, California
spellingShingle A study of the TEX86 paleothermometer in the water column and sediments of the Santa Barbara Basin, California
Huguet, Carme|||0000-0001-8025-2010
Santa Barbara Basin
Paleoclimatology
Marine organic chemistry
Geochemical tracers
Sea surface temperature
title_short A study of the TEX86 paleothermometer in the water column and sediments of the Santa Barbara Basin, California
title_full A study of the TEX86 paleothermometer in the water column and sediments of the Santa Barbara Basin, California
title_fullStr A study of the TEX86 paleothermometer in the water column and sediments of the Santa Barbara Basin, California
title_full_unstemmed A study of the TEX86 paleothermometer in the water column and sediments of the Santa Barbara Basin, California
title_sort A study of the TEX86 paleothermometer in the water column and sediments of the Santa Barbara Basin, California
dc.creator.none.fl_str_mv Huguet, Carme|||0000-0001-8025-2010
Schimmelmann, Arndt
Thunell, Robert
Lourens, Lucas J.
Sinninghe Damsté, Jaap S.
Schouten, Stefan
author Huguet, Carme|||0000-0001-8025-2010
author_facet Huguet, Carme|||0000-0001-8025-2010
Schimmelmann, Arndt
Thunell, Robert
Lourens, Lucas J.
Sinninghe Damsté, Jaap S.
Schouten, Stefan
author_role author
author2 Schimmelmann, Arndt
Thunell, Robert
Lourens, Lucas J.
Sinninghe Damsté, Jaap S.
Schouten, Stefan
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv Santa Barbara Basin
Paleoclimatology
Marine organic chemistry
Geochemical tracers
Sea surface temperature
topic Santa Barbara Basin
Paleoclimatology
Marine organic chemistry
Geochemical tracers
Sea surface temperature
description Particulate organic matter collected during a 2-year period, as part of an ongoing sediment trap study, and a high-resolution sediment record from 1850 to 1987 A.D. from the Santa Barbara Basin were analyzed for TEX86, a temperature proxy based on marine crenarchaeotal membrane lipids. Highest fluxes of crenarchaeotal lipids in the water column were found in May-June 1996 and from October 1996 to January 1997 and, in general, showed a good correlation with mass fluxes. TEX86 reconstructed temperatures from the sediment trap series ranged from 8 to 11°C and were usually substantially lower than sea surface temperatures (SST), indicating that unlike in previous studies, the TEX86 corresponds to subsurface temperatures, likely between 100 and 150 m. TEX86 temperature variations observed in trap samples were not coupled to changes in SST or deep-water temperatures and only to some degree with crenarchaeotal lipid fluxes. This suggests that a complex combination of different depth origins and seasonal growth periods of Crenarchaeota contributed to the variations in TEX86 signal during the annual cycle. TEX86 temperatures in the two sediment cores studied (8-13°C) were also substantially lower than those of instrumental SST records (14-17.5°C) confirming that TEX86 records a subsurface temperature signal in the Santa Barbara Basin. This result highlights the importance of performing calibration studies using sediment traps and core tops before applying the TEX86 temperature proxy in a given study area.
publishDate 2007
dc.date.none.fl_str_mv 2
2007-01-01
2007
2007-01-01
dc.type.none.fl_str_mv Article
http://purl.org/coar/resource_type/c_6501
VoR
http://purl.org/coar/version/c_970fb48d4fbd8a85
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://ddd.uab.cat/record/25432
https://dx.doi.org/urn:doi:10.1029/2006PA001310
url https://ddd.uab.cat/record/25432
https://dx.doi.org/urn:doi:10.1029/2006PA001310
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
https://rightsstatements.org/vocab/InC/1.0/
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
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https://rightsstatements.org/vocab/InC/1.0/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv reponame:Dipòsit Digital de Documents de la UAB
instname:Universitat Autònoma de Barcelona
instname_str Universitat Autònoma de Barcelona
reponame_str Dipòsit Digital de Documents de la UAB
collection Dipòsit Digital de Documents de la UAB
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