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Modeling a 200-Yr interruption of the Holocene sapropel S1

Modeling a 200-Yr interruption of the Holocene sapropel S1
Modeling a 200-Yr interruption of the Holocene sapropel S1
An oceanic general circulation model, previously used to simulate the conditions associated with the Holocene Sapropel S1, is used to simulate the effects of a climate deterioration (represented as a cooling event) on the sapropelic circulation mode. The enhanced cooling (2°–3°C) induces deep convection in the Adriatic and the Gulf of Lions and intermediate water formation in the Aegean, where in all cases there had previously been only stagnant unventilated waters. The depths of ventilation (to ~1250 m) are in agreement with core data from this period. The short decadal timescales involved in modifying the sapropelic circulation suggest that such a climatic deterioration may be associated with the interruption of S1 between 7100 and 6900 14C yr B.P., which divided the sapropel into two subunits.
HOLOCENE, SAPROPELS, OCEAN MODELS, PALAEOCEANOGRAPHY, PALAEOCLIMATE, OCEAN CIRCULATION
0033-5894
98-104
Myers, P.G.
d590aaa6-0931-4b55-9090-64d0430e21f3
Rohling, E.J.
a2a27ef2-fcce-4c71-907b-e692b5ecc685
Myers, P.G.
d590aaa6-0931-4b55-9090-64d0430e21f3
Rohling, E.J.
a2a27ef2-fcce-4c71-907b-e692b5ecc685

Myers, P.G. and Rohling, E.J. (2000) Modeling a 200-Yr interruption of the Holocene sapropel S1. Quaternary Research, 53 (1), 98-104. (doi:10.1006/qres.1999.2100).

Record type: Article

Abstract

An oceanic general circulation model, previously used to simulate the conditions associated with the Holocene Sapropel S1, is used to simulate the effects of a climate deterioration (represented as a cooling event) on the sapropelic circulation mode. The enhanced cooling (2°–3°C) induces deep convection in the Adriatic and the Gulf of Lions and intermediate water formation in the Aegean, where in all cases there had previously been only stagnant unventilated waters. The depths of ventilation (to ~1250 m) are in agreement with core data from this period. The short decadal timescales involved in modifying the sapropelic circulation suggest that such a climatic deterioration may be associated with the interruption of S1 between 7100 and 6900 14C yr B.P., which divided the sapropel into two subunits.

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More information

Published date: 2000
Keywords: HOLOCENE, SAPROPELS, OCEAN MODELS, PALAEOCEANOGRAPHY, PALAEOCLIMATE, OCEAN CIRCULATION

Identifiers

Local EPrints ID: 8867
URI: https://eprints.soton.ac.uk/id/eprint/8867
ISSN: 0033-5894
PURE UUID: 38f55f5e-37bd-4668-97ea-25b15fd2c926
ORCID for E.J. Rohling: ORCID iD orcid.org/0000-0001-5349-2158

Catalogue record

Date deposited: 13 Sep 2004
Last modified: 17 Jul 2019 19:11

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