Holocene climate variability in the North-Western Mediterranean Sea (Gulf of Lions)
Sea surface temperatures (SSTs) and land-derived input time series were generated from the Gulf of Lions inner-shelf sediments (NW Mediterranean Sea) using alkenones and high-molecular-weight odd-carbon numbered n -alkanes (TERR-alkanes), respectively. The SST record depicts three main phases: a war...
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ftcopernicus:oai:publications.copernicus.org:cp30873 2023-05-15T17:33:09+02:00 Holocene climate variability in the North-Western Mediterranean Sea (Gulf of Lions) Jalali, B. Sicre, M.-A. Bassetti, M.-A. Kallel, N. 2018-09-27 application/pdf https://doi.org/10.5194/cp-12-91-2016 https://cp.copernicus.org/articles/12/91/2016/ eng eng doi:10.5194/cp-12-91-2016 https://cp.copernicus.org/articles/12/91/2016/ eISSN: 1814-9332 Text 2018 ftcopernicus https://doi.org/10.5194/cp-12-91-2016 2020-07-20T16:24:19Z Sea surface temperatures (SSTs) and land-derived input time series were generated from the Gulf of Lions inner-shelf sediments (NW Mediterranean Sea) using alkenones and high-molecular-weight odd-carbon numbered n -alkanes (TERR-alkanes), respectively. The SST record depicts three main phases: a warm Early Holocene ( ∼ 18 ± 0.4 °C) followed by a cooling of ∼ 3 °C between 7000 and 1000 BP, and rapid warming from ∼ 1850 AD onwards. Several superimposed multi-decadal to centennial-scale cold events of ∼ 1 °C amplitude were also identified. TERR-alkanes were quantified in the same sedimentary horizons to identify periods of high Rhone River discharge and compare them with regional flood reconstructions. Concentrations show a broad increase from the Early Holocene towards the present with a pronounced minimum around 2500 BP and large fluctuations during the Late Holocene. Comparison with Holocene flood activity reconstructions across the Alps region suggests that sediments of the inner shelf originate mainly from the Upper Rhone River catchment basin and that they are primarily delivered during positive North Atlantic Oscillation (NAO). Text North Atlantic North Atlantic oscillation Copernicus Publications: E-Journals Rhone ENVELOPE(158.733,158.733,-79.983,-79.983) Climate of the Past 12 1 91 101 |
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Open Polar |
collection |
Copernicus Publications: E-Journals |
op_collection_id |
ftcopernicus |
language |
English |
description |
Sea surface temperatures (SSTs) and land-derived input time series were generated from the Gulf of Lions inner-shelf sediments (NW Mediterranean Sea) using alkenones and high-molecular-weight odd-carbon numbered n -alkanes (TERR-alkanes), respectively. The SST record depicts three main phases: a warm Early Holocene ( ∼ 18 ± 0.4 °C) followed by a cooling of ∼ 3 °C between 7000 and 1000 BP, and rapid warming from ∼ 1850 AD onwards. Several superimposed multi-decadal to centennial-scale cold events of ∼ 1 °C amplitude were also identified. TERR-alkanes were quantified in the same sedimentary horizons to identify periods of high Rhone River discharge and compare them with regional flood reconstructions. Concentrations show a broad increase from the Early Holocene towards the present with a pronounced minimum around 2500 BP and large fluctuations during the Late Holocene. Comparison with Holocene flood activity reconstructions across the Alps region suggests that sediments of the inner shelf originate mainly from the Upper Rhone River catchment basin and that they are primarily delivered during positive North Atlantic Oscillation (NAO). |
format |
Text |
author |
Jalali, B. Sicre, M.-A. Bassetti, M.-A. Kallel, N. |
spellingShingle |
Jalali, B. Sicre, M.-A. Bassetti, M.-A. Kallel, N. Holocene climate variability in the North-Western Mediterranean Sea (Gulf of Lions) |
author_facet |
Jalali, B. Sicre, M.-A. Bassetti, M.-A. Kallel, N. |
author_sort |
Jalali, B. |
title |
Holocene climate variability in the North-Western Mediterranean Sea (Gulf of Lions) |
title_short |
Holocene climate variability in the North-Western Mediterranean Sea (Gulf of Lions) |
title_full |
Holocene climate variability in the North-Western Mediterranean Sea (Gulf of Lions) |
title_fullStr |
Holocene climate variability in the North-Western Mediterranean Sea (Gulf of Lions) |
title_full_unstemmed |
Holocene climate variability in the North-Western Mediterranean Sea (Gulf of Lions) |
title_sort |
holocene climate variability in the north-western mediterranean sea (gulf of lions) |
publishDate |
2018 |
url |
https://doi.org/10.5194/cp-12-91-2016 https://cp.copernicus.org/articles/12/91/2016/ |
long_lat |
ENVELOPE(158.733,158.733,-79.983,-79.983) |
geographic |
Rhone |
geographic_facet |
Rhone |
genre |
North Atlantic North Atlantic oscillation |
genre_facet |
North Atlantic North Atlantic oscillation |
op_source |
eISSN: 1814-9332 |
op_relation |
doi:10.5194/cp-12-91-2016 https://cp.copernicus.org/articles/12/91/2016/ |
op_doi |
https://doi.org/10.5194/cp-12-91-2016 |
container_title |
Climate of the Past |
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12 |
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1 |
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91 |
op_container_end_page |
101 |
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1766131547762589696 |