Evaluation of some numerical techniques for determining paleotemperatures from planktonic foraminiferal assemblages
This study evaluates the results of various numerical techniques intended to estimate environmental variables from the composition of associations of organisms in sediment samples. An analysis is made of various transfer functions (species regression technique, 13 variants; weighted average techniqu...
Published in: | Spanish Journal of Palaeontology |
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Online Access: | https://ojs.uv.es/index.php/sjpalaeontology/article/view/24040 https://doi.org/10.7203/sjp.24040 |
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ftunivalenciaojs:oai:ojs.uv.es:article/24040 2023-05-15T17:33:34+02:00 Evaluation of some numerical techniques for determining paleotemperatures from planktonic foraminiferal assemblages González-Donoso, José María Linares, Dolores 2022-03-01 application/pdf https://ojs.uv.es/index.php/sjpalaeontology/article/view/24040 https://doi.org/10.7203/sjp.24040 spa spa Sociedad Española de Paleontología (SEP) https://ojs.uv.es/index.php/sjpalaeontology/article/view/24040/20385 https://ojs.uv.es/index.php/sjpalaeontology/article/view/24040 doi:10.7203/sjp.24040 Copyright (c) 2022 José María González-Donoso, Dolores Linares http://creativecommons.org/licenses/by-nc/4.0 CC-BY-NC Spanish Journal of Palaeontology; Vol. 13, Núm. 1 (1998): REVISTA ESPAÑOLA DE PALEONTOLOGÍA; 107-129 2660-9568 2255-0550 paleobotánica estratigrafía Modern analogs transfer functions species regression weighted average principal component regression discriminant analysis planktonic foraminifera environmental variables info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article Artículo revisado por pares 2022 ftunivalenciaojs https://doi.org/10.7203/sjp.24040 2023-02-09T18:34:15Z This study evaluates the results of various numerical techniques intended to estimate environmental variables from the composition of associations of organisms in sediment samples. An analysis is made of various transfer functions (species regression technique, 13 variants; weighted average technique, 8 variants; principal component regression technique, 270 variants; discriminant analysis technique, one procedure) and of the modern analog technique (11 variants). The initial point is the calibration data set composed of the associations of planktonic foraminifera contained in 605 core-top samples from the North Atlantic and the Mediterranean, together with the corresponding sea surface winter temperatures. To compare the results of the various techniques, the calibration data set is randomly divided into two subsets of 450 and 155 samples, respectively. The former is used as the provisional calibration data set; this is used to estimate the winter temperatures of the subset of 155 samples (the analog set) and of another set, formed of 27 samples from the South Atlantic and the Indian Ocean (no-analog set). After evaluating the errors of the estimate of the different techniques, the best ones are selected. Article in Journal/Newspaper North Atlantic Planktonic foraminifera Universitat de València: Open Journal Systems Indian Spanish Journal of Palaeontology 13 1 107 |
institution |
Open Polar |
collection |
Universitat de València: Open Journal Systems |
op_collection_id |
ftunivalenciaojs |
language |
Spanish |
topic |
paleobotánica estratigrafía Modern analogs transfer functions species regression weighted average principal component regression discriminant analysis planktonic foraminifera environmental variables |
spellingShingle |
paleobotánica estratigrafía Modern analogs transfer functions species regression weighted average principal component regression discriminant analysis planktonic foraminifera environmental variables González-Donoso, José María Linares, Dolores Evaluation of some numerical techniques for determining paleotemperatures from planktonic foraminiferal assemblages |
topic_facet |
paleobotánica estratigrafía Modern analogs transfer functions species regression weighted average principal component regression discriminant analysis planktonic foraminifera environmental variables |
description |
This study evaluates the results of various numerical techniques intended to estimate environmental variables from the composition of associations of organisms in sediment samples. An analysis is made of various transfer functions (species regression technique, 13 variants; weighted average technique, 8 variants; principal component regression technique, 270 variants; discriminant analysis technique, one procedure) and of the modern analog technique (11 variants). The initial point is the calibration data set composed of the associations of planktonic foraminifera contained in 605 core-top samples from the North Atlantic and the Mediterranean, together with the corresponding sea surface winter temperatures. To compare the results of the various techniques, the calibration data set is randomly divided into two subsets of 450 and 155 samples, respectively. The former is used as the provisional calibration data set; this is used to estimate the winter temperatures of the subset of 155 samples (the analog set) and of another set, formed of 27 samples from the South Atlantic and the Indian Ocean (no-analog set). After evaluating the errors of the estimate of the different techniques, the best ones are selected. |
format |
Article in Journal/Newspaper |
author |
González-Donoso, José María Linares, Dolores |
author_facet |
González-Donoso, José María Linares, Dolores |
author_sort |
González-Donoso, José María |
title |
Evaluation of some numerical techniques for determining paleotemperatures from planktonic foraminiferal assemblages |
title_short |
Evaluation of some numerical techniques for determining paleotemperatures from planktonic foraminiferal assemblages |
title_full |
Evaluation of some numerical techniques for determining paleotemperatures from planktonic foraminiferal assemblages |
title_fullStr |
Evaluation of some numerical techniques for determining paleotemperatures from planktonic foraminiferal assemblages |
title_full_unstemmed |
Evaluation of some numerical techniques for determining paleotemperatures from planktonic foraminiferal assemblages |
title_sort |
evaluation of some numerical techniques for determining paleotemperatures from planktonic foraminiferal assemblages |
publisher |
Sociedad Española de Paleontología (SEP) |
publishDate |
2022 |
url |
https://ojs.uv.es/index.php/sjpalaeontology/article/view/24040 https://doi.org/10.7203/sjp.24040 |
geographic |
Indian |
geographic_facet |
Indian |
genre |
North Atlantic Planktonic foraminifera |
genre_facet |
North Atlantic Planktonic foraminifera |
op_source |
Spanish Journal of Palaeontology; Vol. 13, Núm. 1 (1998): REVISTA ESPAÑOLA DE PALEONTOLOGÍA; 107-129 2660-9568 2255-0550 |
op_relation |
https://ojs.uv.es/index.php/sjpalaeontology/article/view/24040/20385 https://ojs.uv.es/index.php/sjpalaeontology/article/view/24040 doi:10.7203/sjp.24040 |
op_rights |
Copyright (c) 2022 José María González-Donoso, Dolores Linares http://creativecommons.org/licenses/by-nc/4.0 |
op_rightsnorm |
CC-BY-NC |
op_doi |
https://doi.org/10.7203/sjp.24040 |
container_title |
Spanish Journal of Palaeontology |
container_volume |
13 |
container_issue |
1 |
container_start_page |
107 |
_version_ |
1766132113713659904 |