Coccolithophore taxa and PCA factor analysis of ODP Site 1233
We provide high-resolution sea surface temperature (SST) and paleoproductivity data focusing on Termination 1. We describe a new method for estimating SSTs based on multivariate statistical analyses performed on modern coccolithophore census data, and we present the first downcore reconstructions de...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.806605 2024-09-15T17:44:37+00:00 Coccolithophore taxa and PCA factor analysis of ODP Site 1233 Saavedra-Pellitero, Mariem Flores, José-Abel Lamy, Frank Sierro, Francisco Javier Cortina Guerra, Aleix LATITUDE: -41.000080 * LONGITUDE: -74.449860 * DATE/TIME START: 2002-04-12T00:00:00 * DATE/TIME END: 2002-04-12T00:00:00 2011 application/zip, 7 datasets https://doi.pangaea.de/10.1594/PANGAEA.806605 https://doi.org/10.1594/PANGAEA.806605 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.806605 https://doi.org/10.1594/PANGAEA.806605 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess Supplement to: Saavedra-Pellitero, Mariem; Flores, José-Abel; Lamy, Frank; Sierro, Francisco Javier; Cortina Guerra, Aleix (2011): Coccolithophore estimates of paleotemperature and paleoproductivity changes in the southeast Pacific over the past ~27 kyr. Paleoceanography, 26, PA1201, https://doi.org/10.1029/2009PA001824 202-1233 COMPCORE Composite Core Joides Resolution Leg202 Ocean Drilling Program ODP South-East Pacific dataset publication series 2011 ftpangaea https://doi.org/10.1594/PANGAEA.80660510.1029/2009PA001824 2024-08-27T23:49:29Z We provide high-resolution sea surface temperature (SST) and paleoproductivity data focusing on Termination 1. We describe a new method for estimating SSTs based on multivariate statistical analyses performed on modern coccolithophore census data, and we present the first downcore reconstructions derived from coccolithophore assemblages at Ocean Drilling Project (ODP) Site 1233 located offshore Chile. We compare our coccolithophore SST record to alkenone-based SSTs as well as SST reconstructions based on dinoflagellates and radiolaria. All reconstructions generally show a remarkable concordance. As in the alkenone SST record, the Last Glacial Maximum (LGM, 19-23 kyr B.P.) is not clearly defined in our SST reconstruction. After the onset of deglaciation, three major warming steps are recorded: from 18.6 to 18 kyr B.P. (~2.6°C), from 15.7 to 15.3 kyr B.P. (~2.5°C), and from 13 to 11.4 kyr B.P. (~3.4°C). Consistent with the other records from Site 1233 and Antarctic ice core records, we observed a clear Holocene Climatic Optimum (HCO) from ~8-12 kyr B.P. Combining the SST reconstruction with coccolith absolute abundances and accumulation rates, we show that colder temperatures during the LGM are linked to higher coccolithophore productivity offshore Chile and warmer SSTs during the HCO to lower coccolithophore productivity, with indications of weak coastal upwelling. We interpret our data in terms of latitudinal displacements of the Southern Westerlies and the northern margin of the Antarctic Circumpolar Current system over the deglaciation and the Holocene. Other/Unknown Material Antarc* Antarctic ice core PANGAEA - Data Publisher for Earth & Environmental Science ENVELOPE(-74.449860,-74.449860,-41.000080,-41.000080) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
202-1233 COMPCORE Composite Core Joides Resolution Leg202 Ocean Drilling Program ODP South-East Pacific |
spellingShingle |
202-1233 COMPCORE Composite Core Joides Resolution Leg202 Ocean Drilling Program ODP South-East Pacific Saavedra-Pellitero, Mariem Flores, José-Abel Lamy, Frank Sierro, Francisco Javier Cortina Guerra, Aleix Coccolithophore taxa and PCA factor analysis of ODP Site 1233 |
topic_facet |
202-1233 COMPCORE Composite Core Joides Resolution Leg202 Ocean Drilling Program ODP South-East Pacific |
description |
We provide high-resolution sea surface temperature (SST) and paleoproductivity data focusing on Termination 1. We describe a new method for estimating SSTs based on multivariate statistical analyses performed on modern coccolithophore census data, and we present the first downcore reconstructions derived from coccolithophore assemblages at Ocean Drilling Project (ODP) Site 1233 located offshore Chile. We compare our coccolithophore SST record to alkenone-based SSTs as well as SST reconstructions based on dinoflagellates and radiolaria. All reconstructions generally show a remarkable concordance. As in the alkenone SST record, the Last Glacial Maximum (LGM, 19-23 kyr B.P.) is not clearly defined in our SST reconstruction. After the onset of deglaciation, three major warming steps are recorded: from 18.6 to 18 kyr B.P. (~2.6°C), from 15.7 to 15.3 kyr B.P. (~2.5°C), and from 13 to 11.4 kyr B.P. (~3.4°C). Consistent with the other records from Site 1233 and Antarctic ice core records, we observed a clear Holocene Climatic Optimum (HCO) from ~8-12 kyr B.P. Combining the SST reconstruction with coccolith absolute abundances and accumulation rates, we show that colder temperatures during the LGM are linked to higher coccolithophore productivity offshore Chile and warmer SSTs during the HCO to lower coccolithophore productivity, with indications of weak coastal upwelling. We interpret our data in terms of latitudinal displacements of the Southern Westerlies and the northern margin of the Antarctic Circumpolar Current system over the deglaciation and the Holocene. |
format |
Other/Unknown Material |
author |
Saavedra-Pellitero, Mariem Flores, José-Abel Lamy, Frank Sierro, Francisco Javier Cortina Guerra, Aleix |
author_facet |
Saavedra-Pellitero, Mariem Flores, José-Abel Lamy, Frank Sierro, Francisco Javier Cortina Guerra, Aleix |
author_sort |
Saavedra-Pellitero, Mariem |
title |
Coccolithophore taxa and PCA factor analysis of ODP Site 1233 |
title_short |
Coccolithophore taxa and PCA factor analysis of ODP Site 1233 |
title_full |
Coccolithophore taxa and PCA factor analysis of ODP Site 1233 |
title_fullStr |
Coccolithophore taxa and PCA factor analysis of ODP Site 1233 |
title_full_unstemmed |
Coccolithophore taxa and PCA factor analysis of ODP Site 1233 |
title_sort |
coccolithophore taxa and pca factor analysis of odp site 1233 |
publisher |
PANGAEA |
publishDate |
2011 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.806605 https://doi.org/10.1594/PANGAEA.806605 |
op_coverage |
LATITUDE: -41.000080 * LONGITUDE: -74.449860 * DATE/TIME START: 2002-04-12T00:00:00 * DATE/TIME END: 2002-04-12T00:00:00 |
long_lat |
ENVELOPE(-74.449860,-74.449860,-41.000080,-41.000080) |
genre |
Antarc* Antarctic ice core |
genre_facet |
Antarc* Antarctic ice core |
op_source |
Supplement to: Saavedra-Pellitero, Mariem; Flores, José-Abel; Lamy, Frank; Sierro, Francisco Javier; Cortina Guerra, Aleix (2011): Coccolithophore estimates of paleotemperature and paleoproductivity changes in the southeast Pacific over the past ~27 kyr. Paleoceanography, 26, PA1201, https://doi.org/10.1029/2009PA001824 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.806605 https://doi.org/10.1594/PANGAEA.806605 |
op_rights |
CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1594/PANGAEA.80660510.1029/2009PA001824 |
_version_ |
1810492257059471360 |