Multivariate climate reconstruction for the last 14,000 years in southernmost South America
Comparison between past changes in pollen assemblages and stable isotope ratios (deuterium and carbon) analyzed in the same peat core from Tierra del Fuego at latitude 55°S permitted identification of the relative contribution of precipitation versus temperature responsible for the respective change...
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ftoceandocs:oai:aquadocs.org:1834/31530 2023-05-15T13:55:44+02:00 Multivariate climate reconstruction for the last 14,000 years in southernmost South America Markgraf, Vera White, James W.C. Figge, Regina A. Kenny, Ray 1995 application/pdf 21-28 http://hdl.handle.net/1834/31530 en eng http://hdl.handle.net/1834/31530 http://aquaticcommons.org/id/eprint/15716 8 2014-11-25 21:32:47 15716 Atmospheric Sciences Earth Sciences Oceanography PACLIM palynology conference_item 1995 ftoceandocs 2023-04-06T17:04:26Z Comparison between past changes in pollen assemblages and stable isotope ratios (deuterium and carbon) analyzed in the same peat core from Tierra del Fuego at latitude 55°S permitted identification of the relative contribution of precipitation versus temperature responsible for the respective change. Major steps in the sequence of paleoenvironmental changes, such as at 12700, 9000, 5000, and 4000 years ago are apparently related only to increase in precipitation, reflecting the latitudinal location and intensity of the westerly storm tracks. On the other hand, high paleoenvironmental variability, which is characteristic for the late-glacial and the latest Holocene, is related to temperature variability, which affects the relative moisture content. Comparison with other paleoenvironmental records suggests that the late-glacial temperature variability is probably related to variability in the extent of Antarctic sea-ice, which in turn appears to be related to the intensity of Atlantic deep-water circulation. Temperature variability during the latest Holocene, on the other hand, is probably related to the dynamics of the El Niño/Southern Oscillation. Other/Unknown Material Antarc* Antarctic Sea ice Tierra del Fuego IODE-UNESCO: OceanDocs - E-Repository of Ocean Publications Antarctic |
institution |
Open Polar |
collection |
IODE-UNESCO: OceanDocs - E-Repository of Ocean Publications |
op_collection_id |
ftoceandocs |
language |
English |
topic |
Atmospheric Sciences Earth Sciences Oceanography PACLIM palynology |
spellingShingle |
Atmospheric Sciences Earth Sciences Oceanography PACLIM palynology Markgraf, Vera White, James W.C. Figge, Regina A. Kenny, Ray Multivariate climate reconstruction for the last 14,000 years in southernmost South America |
topic_facet |
Atmospheric Sciences Earth Sciences Oceanography PACLIM palynology |
description |
Comparison between past changes in pollen assemblages and stable isotope ratios (deuterium and carbon) analyzed in the same peat core from Tierra del Fuego at latitude 55°S permitted identification of the relative contribution of precipitation versus temperature responsible for the respective change. Major steps in the sequence of paleoenvironmental changes, such as at 12700, 9000, 5000, and 4000 years ago are apparently related only to increase in precipitation, reflecting the latitudinal location and intensity of the westerly storm tracks. On the other hand, high paleoenvironmental variability, which is characteristic for the late-glacial and the latest Holocene, is related to temperature variability, which affects the relative moisture content. Comparison with other paleoenvironmental records suggests that the late-glacial temperature variability is probably related to variability in the extent of Antarctic sea-ice, which in turn appears to be related to the intensity of Atlantic deep-water circulation. Temperature variability during the latest Holocene, on the other hand, is probably related to the dynamics of the El Niño/Southern Oscillation. |
format |
Other/Unknown Material |
author |
Markgraf, Vera White, James W.C. Figge, Regina A. Kenny, Ray |
author_facet |
Markgraf, Vera White, James W.C. Figge, Regina A. Kenny, Ray |
author_sort |
Markgraf, Vera |
title |
Multivariate climate reconstruction for the last 14,000 years in southernmost South America |
title_short |
Multivariate climate reconstruction for the last 14,000 years in southernmost South America |
title_full |
Multivariate climate reconstruction for the last 14,000 years in southernmost South America |
title_fullStr |
Multivariate climate reconstruction for the last 14,000 years in southernmost South America |
title_full_unstemmed |
Multivariate climate reconstruction for the last 14,000 years in southernmost South America |
title_sort |
multivariate climate reconstruction for the last 14,000 years in southernmost south america |
publishDate |
1995 |
url |
http://hdl.handle.net/1834/31530 |
geographic |
Antarctic |
geographic_facet |
Antarctic |
genre |
Antarc* Antarctic Sea ice Tierra del Fuego |
genre_facet |
Antarc* Antarctic Sea ice Tierra del Fuego |
op_source |
http://aquaticcommons.org/id/eprint/15716 8 2014-11-25 21:32:47 15716 |
op_relation |
http://hdl.handle.net/1834/31530 |
_version_ |
1766262562345713664 |