Modern sea surface productivity and temperature estimations off Chile as detected by coccolith accumulation rates
Recent coccoliths from 74 surface sediment samples recovered from the southeastern Pacific off Chile were examined quantitatively to investigate modern regional gradients of sea surface productivity and temperature. All findings are based on coccolith accumulation rates. Therefore an approach was de...
Published in: | Palaeogeography, Palaeoclimatology, Palaeoecology |
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ftunivbern:oai:boris.unibe.ch:39363 2023-08-20T04:09:20+02:00 Modern sea surface productivity and temperature estimations off Chile as detected by coccolith accumulation rates Saavedra-Pellitero, M. Baumann, K.-H. Hernandez Almeida, Ivan Flores, J.A. Sierro, F.J. 2013-12-15 application/pdf https://boris.unibe.ch/39363/1/1-s2.0-S0031018213004665-main.pdf https://boris.unibe.ch/39363/7/Saavedra%20et%20al%202013.pdf https://boris.unibe.ch/39363/ eng eng Elsevier https://boris.unibe.ch/39363/ info:eu-repo/semantics/restrictedAccess info:eu-repo/semantics/openAccess Saavedra-Pellitero, M.; Baumann, K.-H.; Hernandez Almeida, Ivan; Flores, J.A.; Sierro, F.J. (2013). Modern sea surface productivity and temperature estimations off Chile as detected by coccolith accumulation rates. Palaeogeography, Palaeoclimatology, Palaeoecology, 392, pp. 534-545. Elsevier 10.1016/j.palaeo.2013.10.010 <http://dx.doi.org/10.1016/j.palaeo.2013.10.010> 550 Earth sciences & geology 910 Geography & travel info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion PeerReviewed 2013 ftunivbern https://doi.org/10.1016/j.palaeo.2013.10.010 2023-07-31T21:00:53Z Recent coccoliths from 74 surface sediment samples recovered from the southeastern Pacific off Chile were examined quantitatively to investigate modern regional gradients of sea surface productivity and temperature. All findings are based on coccolith accumulation rates. Therefore an approach was designed to estimate recent sedimentation rates based on 210Pb and bulk chemistry analyses of the same set of surface samples. Highest total coccolith accumulation rates were found off north-central Chile, where seasonal upwelling takes place. Based on a multiple linear regression between calculated coccolith accumulation rates and World Ocean Atlas derived sea surface temperatures, a calibration model to reconstruct annual average temperatures of the uppermost 75 m of the water column is provided. The model was cross-validated and the SST estimates were compared with SST observed and SST estimates based on diatoms and planktonic foraminifera, showing a good correlation. Article in Journal/Newspaper Planktonic foraminifera BORIS (Bern Open Repository and Information System, University of Bern) Pacific Palaeogeography, Palaeoclimatology, Palaeoecology 392 534 545 |
institution |
Open Polar |
collection |
BORIS (Bern Open Repository and Information System, University of Bern) |
op_collection_id |
ftunivbern |
language |
English |
topic |
550 Earth sciences & geology 910 Geography & travel |
spellingShingle |
550 Earth sciences & geology 910 Geography & travel Saavedra-Pellitero, M. Baumann, K.-H. Hernandez Almeida, Ivan Flores, J.A. Sierro, F.J. Modern sea surface productivity and temperature estimations off Chile as detected by coccolith accumulation rates |
topic_facet |
550 Earth sciences & geology 910 Geography & travel |
description |
Recent coccoliths from 74 surface sediment samples recovered from the southeastern Pacific off Chile were examined quantitatively to investigate modern regional gradients of sea surface productivity and temperature. All findings are based on coccolith accumulation rates. Therefore an approach was designed to estimate recent sedimentation rates based on 210Pb and bulk chemistry analyses of the same set of surface samples. Highest total coccolith accumulation rates were found off north-central Chile, where seasonal upwelling takes place. Based on a multiple linear regression between calculated coccolith accumulation rates and World Ocean Atlas derived sea surface temperatures, a calibration model to reconstruct annual average temperatures of the uppermost 75 m of the water column is provided. The model was cross-validated and the SST estimates were compared with SST observed and SST estimates based on diatoms and planktonic foraminifera, showing a good correlation. |
format |
Article in Journal/Newspaper |
author |
Saavedra-Pellitero, M. Baumann, K.-H. Hernandez Almeida, Ivan Flores, J.A. Sierro, F.J. |
author_facet |
Saavedra-Pellitero, M. Baumann, K.-H. Hernandez Almeida, Ivan Flores, J.A. Sierro, F.J. |
author_sort |
Saavedra-Pellitero, M. |
title |
Modern sea surface productivity and temperature estimations off Chile as detected by coccolith accumulation rates |
title_short |
Modern sea surface productivity and temperature estimations off Chile as detected by coccolith accumulation rates |
title_full |
Modern sea surface productivity and temperature estimations off Chile as detected by coccolith accumulation rates |
title_fullStr |
Modern sea surface productivity and temperature estimations off Chile as detected by coccolith accumulation rates |
title_full_unstemmed |
Modern sea surface productivity and temperature estimations off Chile as detected by coccolith accumulation rates |
title_sort |
modern sea surface productivity and temperature estimations off chile as detected by coccolith accumulation rates |
publisher |
Elsevier |
publishDate |
2013 |
url |
https://boris.unibe.ch/39363/1/1-s2.0-S0031018213004665-main.pdf https://boris.unibe.ch/39363/7/Saavedra%20et%20al%202013.pdf https://boris.unibe.ch/39363/ |
geographic |
Pacific |
geographic_facet |
Pacific |
genre |
Planktonic foraminifera |
genre_facet |
Planktonic foraminifera |
op_source |
Saavedra-Pellitero, M.; Baumann, K.-H.; Hernandez Almeida, Ivan; Flores, J.A.; Sierro, F.J. (2013). Modern sea surface productivity and temperature estimations off Chile as detected by coccolith accumulation rates. Palaeogeography, Palaeoclimatology, Palaeoecology, 392, pp. 534-545. Elsevier 10.1016/j.palaeo.2013.10.010 <http://dx.doi.org/10.1016/j.palaeo.2013.10.010> |
op_relation |
https://boris.unibe.ch/39363/ |
op_rights |
info:eu-repo/semantics/restrictedAccess info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1016/j.palaeo.2013.10.010 |
container_title |
Palaeogeography, Palaeoclimatology, Palaeoecology |
container_volume |
392 |
container_start_page |
534 |
op_container_end_page |
545 |
_version_ |
1774722212240031744 |