Pollen analyses of sediment core GeoB1711-4 in the eastern South Atlantic
Influx of aeolian pollen trapped in marine sediments off Namibia provides a wind variation record for the last 135 kyr. The influx of major pollen components is derived from the southwest African desert/semi-desert zone and shows six periods during which enhanced southeast trade winds contributed to...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.735726 2024-09-15T17:41:12+00:00 Pollen analyses of sediment core GeoB1711-4 in the eastern South Atlantic Shi, Ning Schneider, Ralph R Beug, Hans-Jürgen Dupont, Lydie M LATITUDE: -23.315000 * LONGITUDE: 12.376667 * DATE/TIME START: 1992-01-11T00:00:00 * DATE/TIME END: 1992-01-11T00:00:00 2001 application/zip, 2 datasets https://doi.pangaea.de/10.1594/PANGAEA.735726 https://doi.org/10.1594/PANGAEA.735726 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.735726 https://doi.org/10.1594/PANGAEA.735726 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess Supplement to: Shi, Ning; Schneider, Ralph R; Beug, Hans-Jürgen; Dupont, Lydie M (2001): Southeast trade wind variations during the last 135 kyr: evidence from pollen spectra in eastern South Atlantic sediments. Earth and Planetary Science Letters, 187(3-4), 311-321, https://doi.org/10.1016/S0012-821X(01)00267-9 GeoB GeoB1711 GeoB1711-4 Geosciences University of Bremen Gravity corer (Kiel type) M20/2 Meteor (1986) Namibia continental slope SL dataset publication series 2001 ftpangaea https://doi.org/10.1594/PANGAEA.73572610.1016/S0012-821X(01)00267-9 2024-07-24T02:31:20Z Influx of aeolian pollen trapped in marine sediments off Namibia provides a wind variation record for the last 135 kyr. The influx of major pollen components is derived from the southwest African desert/semi-desert zone and shows six periods during which enhanced southeast trade winds contributed to strong upwelling and reduced sea surface temperatures. The most prominent of these occurred during 17-23 cal. kyr, 42-56 kyr and before 130 kyr B.P. Correspondence between the pollen influx record and the Vostok deuterium isotope record suggests that pronounced glacial Antarctic cooling was accompanied by intensification of the southeast trades throughout the Late Quaternary. However, during 42-23 kyr B.P. the combination of strong Antarctic glaciation with a decrease of wind zonality induced by low latitude precessional insolation changes caused strong alongshore winds and Ekman pumping that resulted in strong upwelling and reduced sea surface temperatures without pollen influx enhancement. Other/Unknown Material Antarc* Antarctic PANGAEA - Data Publisher for Earth & Environmental Science ENVELOPE(12.376667,12.376667,-23.315000,-23.315000) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
GeoB GeoB1711 GeoB1711-4 Geosciences University of Bremen Gravity corer (Kiel type) M20/2 Meteor (1986) Namibia continental slope SL |
spellingShingle |
GeoB GeoB1711 GeoB1711-4 Geosciences University of Bremen Gravity corer (Kiel type) M20/2 Meteor (1986) Namibia continental slope SL Shi, Ning Schneider, Ralph R Beug, Hans-Jürgen Dupont, Lydie M Pollen analyses of sediment core GeoB1711-4 in the eastern South Atlantic |
topic_facet |
GeoB GeoB1711 GeoB1711-4 Geosciences University of Bremen Gravity corer (Kiel type) M20/2 Meteor (1986) Namibia continental slope SL |
description |
Influx of aeolian pollen trapped in marine sediments off Namibia provides a wind variation record for the last 135 kyr. The influx of major pollen components is derived from the southwest African desert/semi-desert zone and shows six periods during which enhanced southeast trade winds contributed to strong upwelling and reduced sea surface temperatures. The most prominent of these occurred during 17-23 cal. kyr, 42-56 kyr and before 130 kyr B.P. Correspondence between the pollen influx record and the Vostok deuterium isotope record suggests that pronounced glacial Antarctic cooling was accompanied by intensification of the southeast trades throughout the Late Quaternary. However, during 42-23 kyr B.P. the combination of strong Antarctic glaciation with a decrease of wind zonality induced by low latitude precessional insolation changes caused strong alongshore winds and Ekman pumping that resulted in strong upwelling and reduced sea surface temperatures without pollen influx enhancement. |
format |
Other/Unknown Material |
author |
Shi, Ning Schneider, Ralph R Beug, Hans-Jürgen Dupont, Lydie M |
author_facet |
Shi, Ning Schneider, Ralph R Beug, Hans-Jürgen Dupont, Lydie M |
author_sort |
Shi, Ning |
title |
Pollen analyses of sediment core GeoB1711-4 in the eastern South Atlantic |
title_short |
Pollen analyses of sediment core GeoB1711-4 in the eastern South Atlantic |
title_full |
Pollen analyses of sediment core GeoB1711-4 in the eastern South Atlantic |
title_fullStr |
Pollen analyses of sediment core GeoB1711-4 in the eastern South Atlantic |
title_full_unstemmed |
Pollen analyses of sediment core GeoB1711-4 in the eastern South Atlantic |
title_sort |
pollen analyses of sediment core geob1711-4 in the eastern south atlantic |
publisher |
PANGAEA |
publishDate |
2001 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.735726 https://doi.org/10.1594/PANGAEA.735726 |
op_coverage |
LATITUDE: -23.315000 * LONGITUDE: 12.376667 * DATE/TIME START: 1992-01-11T00:00:00 * DATE/TIME END: 1992-01-11T00:00:00 |
long_lat |
ENVELOPE(12.376667,12.376667,-23.315000,-23.315000) |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_source |
Supplement to: Shi, Ning; Schneider, Ralph R; Beug, Hans-Jürgen; Dupont, Lydie M (2001): Southeast trade wind variations during the last 135 kyr: evidence from pollen spectra in eastern South Atlantic sediments. Earth and Planetary Science Letters, 187(3-4), 311-321, https://doi.org/10.1016/S0012-821X(01)00267-9 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.735726 https://doi.org/10.1594/PANGAEA.735726 |
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.73572610.1016/S0012-821X(01)00267-9 |
_version_ |
1810487343387246592 |