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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ftunivbern:oai:boris.unibe.ch:130657 2023-08-20T04:08:15+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 application/pdf https://boris.unibe.ch/130657/1/1-s2.0-S0277379118308564-main.pdf https://boris.unibe.ch/130657/ eng deu eng ger Elsevier https://boris.unibe.ch/130657/ info:eu-repo/semantics/restrictedAccess 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). Frequency and dynamics of millennial-scale variability during Marine Isotope Stage 19: Insights from the Sulmona Basin (central Italy). Quaternary science reviews, 214, pp. 28-43. Elsevier 10.1016/j.quascirev.2019.04.024 <http://dx.doi.org/10.1016/j.quascirev.2019.04.024> 550 Earth sciences & geology info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion PeerReviewed 2019 ftunivbern https://doi.org/10.1016/j.quascirev.2019.04.024 2023-07-31T21:52:21Z 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. Article in Journal/Newspaper North Atlantic BORIS (Bern Open Repository and Information System, University of Bern) Quaternary Science Reviews 214 28 43 |
institution |
Open Polar |
collection |
BORIS (Bern Open Repository and Information System, University of Bern) |
op_collection_id |
ftunivbern |
language |
English German |
topic |
550 Earth sciences & geology |
spellingShingle |
550 Earth sciences & geology 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 |
550 Earth sciences & geology |
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. |
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 |
Elsevier |
publishDate |
2019 |
url |
https://boris.unibe.ch/130657/1/1-s2.0-S0277379118308564-main.pdf https://boris.unibe.ch/130657/ |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
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). Frequency and dynamics of millennial-scale variability during Marine Isotope Stage 19: Insights from the Sulmona Basin (central Italy). Quaternary science reviews, 214, pp. 28-43. Elsevier 10.1016/j.quascirev.2019.04.024 <http://dx.doi.org/10.1016/j.quascirev.2019.04.024> |
op_relation |
https://boris.unibe.ch/130657/ |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1016/j.quascirev.2019.04.024 |
container_title |
Quaternary Science Reviews |
container_volume |
214 |
container_start_page |
28 |
op_container_end_page |
43 |
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1774720417587527680 |