Frequency and dynamics of millennial-scale variability during Marine Isotope Stage 19: Insights from the Sulmona Basin (central Italy)
Among past interglacial periods, Marine Isotope Stage (MIS) 19 is particularly interesting because its orbital geometry is very similar to that of the present interglacial. Here we present a high-resolution (sub-centennial) multiproxy record covering the ca. 790-770 ka interval, i.e. the interglacia...
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ftubkoeln:oai:USBKOELN.ub.uni-koeln.de:13774 2023-05-15T17:29:41+02:00 Frequency and dynamics of millennial-scale variability during Marine Isotope Stage 19: Insights from the Sulmona Basin (central Italy) Regattieri, Eleonora Giaccio, Biagio Mannella, Giorgio Zanchetta, Giovanni Nomade, Sebastien Tognarelli, Andrea Perchiazzi, Natale Vogel, Hendrik Boschi, Chiara Drysdale, Russell Neil Wagner, Bernd Gemelli, Maurizio Tzedakis, Polichronis 2019 https://kups.ub.uni-koeln.de/13774/ eng eng PERGAMON-ELSEVIER SCIENCE LTD Regattieri, Eleonora orcid:0000-0003-0089-4027 , Giaccio, Biagio orcid:0000-0002-7007-9127 , Mannella, Giorgio, Zanchetta, Giovanni, Nomade, Sebastien, Tognarelli, Andrea, Perchiazzi, Natale, Vogel, Hendrik orcid:0000-0002-9902-8120 , Boschi, Chiara, Drysdale, Russell Neil, Wagner, Bernd orcid:0000-0002-1369-7893 , Gemelli, Maurizio and Tzedakis, Polichronis (2019). Frequency and dynamics of millennial-scale variability during Marine Isotope Stage 19: Insights from the Sulmona Basin (central Italy). Quat. Sci. Rev., 214. S. 28 - 44. OXFORD: PERGAMON-ELSEVIER SCIENCE LTD. ISSN 0277-3791 ddc:no doc-type:article publishedVersion 2019 ftubkoeln 2022-11-09T07:14:14Z Among past interglacial periods, Marine Isotope Stage (MIS) 19 is particularly interesting because its orbital geometry is very similar to that of the present interglacial. Here we present a high-resolution (sub-centennial) multiproxy record covering the ca. 790-770 ka interval, i.e. the interglacial MIS 19c and the ensuing glacial inception of MIS 19b, from a lacustrine sediment sequence retrieved from the Sulmona Basin (central Italy). The record has an independent chronology based on radiometric dating of six volcanic ash layers, and the resulting age model has a mean associated uncertainty of +/- 2.6 kyr. Variations in sediment geochemistry and mineralogy are interpreted in terms of past hydrological and temperature changes. Several millennial and sub-millennial events of reduced precipitation are well expressed. Comparisons with continental and marine records from the mid-latitude and sub-polar North Atlantic suggest a broad spatial expression for the observed events. Events occurring within the interglacial are not clearly associated with changes in marine proxies in the Iberian Margin, although similarities with the record from the sub-polar North Atlantic can be recognized and tentatively linked to changes in local hydrography having a downstream effect amplified by changes in atmospheric circulation. During the glacial inception, changes in the Sulmona record are coherent with changes in North Atlantic records, with drier events likely associated with meltwater-induced intervals of AMOC weakening. An event at ca. 785.6 ka may also reflect oceanic changes caused by freshwater discharges from residual ice-sheets and an outburst flood, similar to the 8.2 ka event in the Holocene. (C) 2019 Elsevier Ltd. All rights reserved. Article in Journal/Newspaper North Atlantic Cologne University: KUPS |
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Cologne University: KUPS |
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ftubkoeln |
language |
English |
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spellingShingle |
ddc:no Regattieri, Eleonora Giaccio, Biagio Mannella, Giorgio Zanchetta, Giovanni Nomade, Sebastien Tognarelli, Andrea Perchiazzi, Natale Vogel, Hendrik Boschi, Chiara Drysdale, Russell Neil Wagner, Bernd Gemelli, Maurizio Tzedakis, Polichronis Frequency and dynamics of millennial-scale variability during Marine Isotope Stage 19: Insights from the Sulmona Basin (central Italy) |
topic_facet |
ddc:no |
description |
Among past interglacial periods, Marine Isotope Stage (MIS) 19 is particularly interesting because its orbital geometry is very similar to that of the present interglacial. Here we present a high-resolution (sub-centennial) multiproxy record covering the ca. 790-770 ka interval, i.e. the interglacial MIS 19c and the ensuing glacial inception of MIS 19b, from a lacustrine sediment sequence retrieved from the Sulmona Basin (central Italy). The record has an independent chronology based on radiometric dating of six volcanic ash layers, and the resulting age model has a mean associated uncertainty of +/- 2.6 kyr. Variations in sediment geochemistry and mineralogy are interpreted in terms of past hydrological and temperature changes. Several millennial and sub-millennial events of reduced precipitation are well expressed. Comparisons with continental and marine records from the mid-latitude and sub-polar North Atlantic suggest a broad spatial expression for the observed events. Events occurring within the interglacial are not clearly associated with changes in marine proxies in the Iberian Margin, although similarities with the record from the sub-polar North Atlantic can be recognized and tentatively linked to changes in local hydrography having a downstream effect amplified by changes in atmospheric circulation. During the glacial inception, changes in the Sulmona record are coherent with changes in North Atlantic records, with drier events likely associated with meltwater-induced intervals of AMOC weakening. An event at ca. 785.6 ka may also reflect oceanic changes caused by freshwater discharges from residual ice-sheets and an outburst flood, similar to the 8.2 ka event in the Holocene. (C) 2019 Elsevier Ltd. All rights reserved. |
format |
Article in Journal/Newspaper |
author |
Regattieri, Eleonora Giaccio, Biagio Mannella, Giorgio Zanchetta, Giovanni Nomade, Sebastien Tognarelli, Andrea Perchiazzi, Natale Vogel, Hendrik Boschi, Chiara Drysdale, Russell Neil Wagner, Bernd Gemelli, Maurizio Tzedakis, Polichronis |
author_facet |
Regattieri, Eleonora Giaccio, Biagio Mannella, Giorgio Zanchetta, Giovanni Nomade, Sebastien Tognarelli, Andrea Perchiazzi, Natale Vogel, Hendrik Boschi, Chiara Drysdale, Russell Neil Wagner, Bernd Gemelli, Maurizio Tzedakis, Polichronis |
author_sort |
Regattieri, Eleonora |
title |
Frequency and dynamics of millennial-scale variability during Marine Isotope Stage 19: Insights from the Sulmona Basin (central Italy) |
title_short |
Frequency and dynamics of millennial-scale variability during Marine Isotope Stage 19: Insights from the Sulmona Basin (central Italy) |
title_full |
Frequency and dynamics of millennial-scale variability during Marine Isotope Stage 19: Insights from the Sulmona Basin (central Italy) |
title_fullStr |
Frequency and dynamics of millennial-scale variability during Marine Isotope Stage 19: Insights from the Sulmona Basin (central Italy) |
title_full_unstemmed |
Frequency and dynamics of millennial-scale variability during Marine Isotope Stage 19: Insights from the Sulmona Basin (central Italy) |
title_sort |
frequency and dynamics of millennial-scale variability during marine isotope stage 19: insights from the sulmona basin (central italy) |
publisher |
PERGAMON-ELSEVIER SCIENCE LTD |
publishDate |
2019 |
url |
https://kups.ub.uni-koeln.de/13774/ |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_relation |
Regattieri, Eleonora orcid:0000-0003-0089-4027 , Giaccio, Biagio orcid:0000-0002-7007-9127 , Mannella, Giorgio, Zanchetta, Giovanni, Nomade, Sebastien, Tognarelli, Andrea, Perchiazzi, Natale, Vogel, Hendrik orcid:0000-0002-9902-8120 , Boschi, Chiara, Drysdale, Russell Neil, Wagner, Bernd orcid:0000-0002-1369-7893 , Gemelli, Maurizio and Tzedakis, Polichronis (2019). Frequency and dynamics of millennial-scale variability during Marine Isotope Stage 19: Insights from the Sulmona Basin (central Italy). Quat. Sci. Rev., 214. S. 28 - 44. OXFORD: PERGAMON-ELSEVIER SCIENCE LTD. ISSN 0277-3791 |
_version_ |
1766124469591474176 |