Holocene hydrological changes in the Rhône River (NW Mediterranean) as recorded in the marine mud belt
Expanded marine Holocene archives are relatively scarce in the Mediterranean Sea because most of the sediments were trapped in catchment areas during this period. Mud belts are the most suitable targets to access expanded Holocene records. These sedimentary bodies represent excellent archives for th...
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ftdoajarticles:oai:doaj.org/article:ed26a6f6581d4ca6863ade73dc235637 2023-05-15T17:32:05+02:00 Holocene hydrological changes in the Rhône River (NW Mediterranean) as recorded in the marine mud belt M.-A. Bassetti S. Berné M.-A. Sicre B. Dennielou Y. Alonso R. Buscail B. Jalali B. Hebert C. Menniti 2016-07-01T00:00:00Z https://doi.org/10.5194/cp-12-1539-2016 https://doaj.org/article/ed26a6f6581d4ca6863ade73dc235637 EN eng Copernicus Publications http://www.clim-past.net/12/1539/2016/cp-12-1539-2016.pdf https://doaj.org/toc/1814-9324 https://doaj.org/toc/1814-9332 1814-9324 1814-9332 doi:10.5194/cp-12-1539-2016 https://doaj.org/article/ed26a6f6581d4ca6863ade73dc235637 Climate of the Past, Vol 12, Iss 7, Pp 1539-1553 (2016) Environmental pollution TD172-193.5 Environmental protection TD169-171.8 Environmental sciences GE1-350 article 2016 ftdoajarticles https://doi.org/10.5194/cp-12-1539-2016 2022-12-31T12:17:29Z Expanded marine Holocene archives are relatively scarce in the Mediterranean Sea because most of the sediments were trapped in catchment areas during this period. Mud belts are the most suitable targets to access expanded Holocene records. These sedimentary bodies represent excellent archives for the study of sea–land interactions and notably the impact of the hydrological activity on sediment accumulation. We retrieved a 7.2 m long sediment core from the Rhône mud belt in the Gulf of Lions in an area where the average accumulation rate is ca. 0.70 m 1000 yr −1 . This core thus provides a continuous and high-resolution record of the last 10 ka cal BP. A multiproxy dataset (XRF core scan, 14 C dates, grain size and organic-matter analysis) combined with seismic stratigraphic analysis was used to document decadal to centennial changes in the Rhône hydrological activity. Our results show that (1) the early Holocene was characterized by high sediment delivery likely indicative of local intense (but short-duration) rainfall events, (2) important sediment delivery around 7 ka cal BP presumably related to increased river flux, (3) a progressive increase in continental/marine input during the mid-Holocene despite increased distance from river outlets due to sea-level rise possibly related to higher atmospheric humidity caused by the southward migration of the storm tracks in the North Atlantic, (4) multidecadal to centennial humid events took place in the late Holocene. Some of these events correspond to the cold periods identified in the North Atlantic (Little Ice Age, LIA; Dark Ages Cold Period) and also coincide with time intervals of major floods in the northern Alps. Other humid events are also observed during relatively warm periods (Roman Humid Period and Medieval Climate Anomaly). Article in Journal/Newspaper North Atlantic Directory of Open Access Journals: DOAJ Articles Climate of the Past 12 7 1539 1553 |
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Open Polar |
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Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Environmental pollution TD172-193.5 Environmental protection TD169-171.8 Environmental sciences GE1-350 |
spellingShingle |
Environmental pollution TD172-193.5 Environmental protection TD169-171.8 Environmental sciences GE1-350 M.-A. Bassetti S. Berné M.-A. Sicre B. Dennielou Y. Alonso R. Buscail B. Jalali B. Hebert C. Menniti Holocene hydrological changes in the Rhône River (NW Mediterranean) as recorded in the marine mud belt |
topic_facet |
Environmental pollution TD172-193.5 Environmental protection TD169-171.8 Environmental sciences GE1-350 |
description |
Expanded marine Holocene archives are relatively scarce in the Mediterranean Sea because most of the sediments were trapped in catchment areas during this period. Mud belts are the most suitable targets to access expanded Holocene records. These sedimentary bodies represent excellent archives for the study of sea–land interactions and notably the impact of the hydrological activity on sediment accumulation. We retrieved a 7.2 m long sediment core from the Rhône mud belt in the Gulf of Lions in an area where the average accumulation rate is ca. 0.70 m 1000 yr −1 . This core thus provides a continuous and high-resolution record of the last 10 ka cal BP. A multiproxy dataset (XRF core scan, 14 C dates, grain size and organic-matter analysis) combined with seismic stratigraphic analysis was used to document decadal to centennial changes in the Rhône hydrological activity. Our results show that (1) the early Holocene was characterized by high sediment delivery likely indicative of local intense (but short-duration) rainfall events, (2) important sediment delivery around 7 ka cal BP presumably related to increased river flux, (3) a progressive increase in continental/marine input during the mid-Holocene despite increased distance from river outlets due to sea-level rise possibly related to higher atmospheric humidity caused by the southward migration of the storm tracks in the North Atlantic, (4) multidecadal to centennial humid events took place in the late Holocene. Some of these events correspond to the cold periods identified in the North Atlantic (Little Ice Age, LIA; Dark Ages Cold Period) and also coincide with time intervals of major floods in the northern Alps. Other humid events are also observed during relatively warm periods (Roman Humid Period and Medieval Climate Anomaly). |
format |
Article in Journal/Newspaper |
author |
M.-A. Bassetti S. Berné M.-A. Sicre B. Dennielou Y. Alonso R. Buscail B. Jalali B. Hebert C. Menniti |
author_facet |
M.-A. Bassetti S. Berné M.-A. Sicre B. Dennielou Y. Alonso R. Buscail B. Jalali B. Hebert C. Menniti |
author_sort |
M.-A. Bassetti |
title |
Holocene hydrological changes in the Rhône River (NW Mediterranean) as recorded in the marine mud belt |
title_short |
Holocene hydrological changes in the Rhône River (NW Mediterranean) as recorded in the marine mud belt |
title_full |
Holocene hydrological changes in the Rhône River (NW Mediterranean) as recorded in the marine mud belt |
title_fullStr |
Holocene hydrological changes in the Rhône River (NW Mediterranean) as recorded in the marine mud belt |
title_full_unstemmed |
Holocene hydrological changes in the Rhône River (NW Mediterranean) as recorded in the marine mud belt |
title_sort |
holocene hydrological changes in the rhône river (nw mediterranean) as recorded in the marine mud belt |
publisher |
Copernicus Publications |
publishDate |
2016 |
url |
https://doi.org/10.5194/cp-12-1539-2016 https://doaj.org/article/ed26a6f6581d4ca6863ade73dc235637 |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
Climate of the Past, Vol 12, Iss 7, Pp 1539-1553 (2016) |
op_relation |
http://www.clim-past.net/12/1539/2016/cp-12-1539-2016.pdf https://doaj.org/toc/1814-9324 https://doaj.org/toc/1814-9332 1814-9324 1814-9332 doi:10.5194/cp-12-1539-2016 https://doaj.org/article/ed26a6f6581d4ca6863ade73dc235637 |
op_doi |
https://doi.org/10.5194/cp-12-1539-2016 |
container_title |
Climate of the Past |
container_volume |
12 |
container_issue |
7 |
container_start_page |
1539 |
op_container_end_page |
1553 |
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1766130031639134208 |