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

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Abstract

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.

Item Type: Journal Article
Creators:
CreatorsEmailORCIDORCID Put Code
Regattieri, EleonoraUNSPECIFIEDorcid.org/0000-0003-0089-4027UNSPECIFIED
Giaccio, BiagioUNSPECIFIEDorcid.org/0000-0002-7007-9127UNSPECIFIED
Mannella, GiorgioUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Zanchetta, GiovanniUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Nomade, SebastienUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Tognarelli, AndreaUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Perchiazzi, NataleUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Vogel, HendrikUNSPECIFIEDorcid.org/0000-0002-9902-8120UNSPECIFIED
Boschi, ChiaraUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Drysdale, Russell NeilUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Wagner, BerndUNSPECIFIEDorcid.org/0000-0002-1369-7893UNSPECIFIED
Gemelli, MaurizioUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Tzedakis, PolichronisUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
URN: urn:nbn:de:hbz:38-137743
DOI: 10.1016/j.quascirev.2019.04.024
Journal or Publication Title: Quat. Sci. Rev.
Volume: 214
Page Range: S. 28 - 44
Date: 2019
Publisher: PERGAMON-ELSEVIER SCIENCE LTD
Place of Publication: OXFORD
ISSN: 0277-3791
Language: English
Faculty: Unspecified
Divisions: Unspecified
Subjects: no entry
Uncontrolled Keywords:
KeywordsLanguage
NORTH-ATLANTIC OSCILLATION; TRANSFORM INFRARED-SPECTROSCOPY; MIDDLE PLEISTOCENE TRANSITION; AQUIFER GRAN-SASSO; STABLE-ISOTOPE; CLIMATE VARIABILITY; MONTALBANO JONICO; DEEP-WATER; HYDROLOGICAL VARIABILITY; ENVIRONMENTAL-CHANGESMultiple languages
Geography, Physical; Geosciences, MultidisciplinaryMultiple languages
Refereed: Yes
URI: http://kups.ub.uni-koeln.de/id/eprint/13774

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