Linking Danube River Activity to Alpine Ice-Sheet Fluctuations during the Last Glacial (ca. 33-17 ka BP): insights into the continental signature of Heinrich Stadials
Offshore archives retrieved from marine/lacustrine environments receiving sediment from large river systems are valuable Quaternary continental records. In the present study, we reconstruct the Danube River activity at the end of the last glacial period based on sedimentological, mineralogical and g...
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ftseanoe:oai:seanoe.org:70660 2023-05-15T16:29:56+02:00 Linking Danube River Activity to Alpine Ice-Sheet Fluctuations during the Last Glacial (ca. 33-17 ka BP): insights into the continental signature of Heinrich Stadials Martinez-lamas, Ruth Toucanne, Samuel Debret, Maxime Riboulot, Vincent Deloffre, Julien Boissier, Audrey Cheron, Sandrine Pitel-roudaut, Mathilde Bayon, Germain Giosan, Liviu Soulet, Guillaume North 57.302156, South 38.635178, East 36.984907, West 4.171825 2020 https://doi.org/10.17882/70660 https://www.seanoe.org/data/00594/70660/ unknown SEANOE doi:10.17882/70660 https://doi.org/10.17882/70660 https://www.seanoe.org/data/00594/70660/ CC0 CC0 dataset 2020 ftseanoe https://doi.org/10.17882/70660 2022-11-30T17:21:39Z Offshore archives retrieved from marine/lacustrine environments receiving sediment from large river systems are valuable Quaternary continental records. In the present study, we reconstruct the Danube River activity at the end of the last glacial period based on sedimentological, mineralogical and geochemical analyses performed on long-piston cores from the north-west Black Sea margin. Our data suggest that the Danube River produced hyperpycnal floods throughout the ca. 33-17 ka period. Four main periods of enhanced Danube flood frequency, each of 1.5-3 kyr duration, are recorded at ca. 32.5-30.5 ka (equivalent to the first part of Heinrich Stadial -HS- 3), at ca. 29-27.5 ka (equivalent to Greenland Stadial 4), at ca. 25.3-23.8 ka (equivalent to HS 2) and at ca. 22.3-19 ka. Based on mineralogical and geochemical data, we relate these events to enhanced surface melting of the Alpine Ice Sheet (AIS) that covered ~50,000 km² of the Danube watershed at the Last Glacial Maximum (LGM). Our results suggest that (i) the AIS growth from the inner Alps to its LGM position in the northern Alpine foreland started from ca. 30.5 ka, ended no later than ca. 25.3 ka, and was interrupted by a melting episode ca. 29-27.5 ka; (ii) the AIS volume drastically decreased from ca. 22.3 to 19 ka, as soon as summer insolation energy at the AIS latitude increased; and (iii) HSs strongly impacted the AIS mass balance through enhanced summer surface melt. This, together with evidence of severely cool winters and the rapid expansion of sea ice in the North Atlantic, implies strong seasonality in continental Europe during stadials. Dataset Greenland Ice Sheet North Atlantic Sea ice SEANOE (Sea scientific open data publication) Greenland |
institution |
Open Polar |
collection |
SEANOE (Sea scientific open data publication) |
op_collection_id |
ftseanoe |
language |
unknown |
description |
Offshore archives retrieved from marine/lacustrine environments receiving sediment from large river systems are valuable Quaternary continental records. In the present study, we reconstruct the Danube River activity at the end of the last glacial period based on sedimentological, mineralogical and geochemical analyses performed on long-piston cores from the north-west Black Sea margin. Our data suggest that the Danube River produced hyperpycnal floods throughout the ca. 33-17 ka period. Four main periods of enhanced Danube flood frequency, each of 1.5-3 kyr duration, are recorded at ca. 32.5-30.5 ka (equivalent to the first part of Heinrich Stadial -HS- 3), at ca. 29-27.5 ka (equivalent to Greenland Stadial 4), at ca. 25.3-23.8 ka (equivalent to HS 2) and at ca. 22.3-19 ka. Based on mineralogical and geochemical data, we relate these events to enhanced surface melting of the Alpine Ice Sheet (AIS) that covered ~50,000 km² of the Danube watershed at the Last Glacial Maximum (LGM). Our results suggest that (i) the AIS growth from the inner Alps to its LGM position in the northern Alpine foreland started from ca. 30.5 ka, ended no later than ca. 25.3 ka, and was interrupted by a melting episode ca. 29-27.5 ka; (ii) the AIS volume drastically decreased from ca. 22.3 to 19 ka, as soon as summer insolation energy at the AIS latitude increased; and (iii) HSs strongly impacted the AIS mass balance through enhanced summer surface melt. This, together with evidence of severely cool winters and the rapid expansion of sea ice in the North Atlantic, implies strong seasonality in continental Europe during stadials. |
format |
Dataset |
author |
Martinez-lamas, Ruth Toucanne, Samuel Debret, Maxime Riboulot, Vincent Deloffre, Julien Boissier, Audrey Cheron, Sandrine Pitel-roudaut, Mathilde Bayon, Germain Giosan, Liviu Soulet, Guillaume |
spellingShingle |
Martinez-lamas, Ruth Toucanne, Samuel Debret, Maxime Riboulot, Vincent Deloffre, Julien Boissier, Audrey Cheron, Sandrine Pitel-roudaut, Mathilde Bayon, Germain Giosan, Liviu Soulet, Guillaume Linking Danube River Activity to Alpine Ice-Sheet Fluctuations during the Last Glacial (ca. 33-17 ka BP): insights into the continental signature of Heinrich Stadials |
author_facet |
Martinez-lamas, Ruth Toucanne, Samuel Debret, Maxime Riboulot, Vincent Deloffre, Julien Boissier, Audrey Cheron, Sandrine Pitel-roudaut, Mathilde Bayon, Germain Giosan, Liviu Soulet, Guillaume |
author_sort |
Martinez-lamas, Ruth |
title |
Linking Danube River Activity to Alpine Ice-Sheet Fluctuations during the Last Glacial (ca. 33-17 ka BP): insights into the continental signature of Heinrich Stadials |
title_short |
Linking Danube River Activity to Alpine Ice-Sheet Fluctuations during the Last Glacial (ca. 33-17 ka BP): insights into the continental signature of Heinrich Stadials |
title_full |
Linking Danube River Activity to Alpine Ice-Sheet Fluctuations during the Last Glacial (ca. 33-17 ka BP): insights into the continental signature of Heinrich Stadials |
title_fullStr |
Linking Danube River Activity to Alpine Ice-Sheet Fluctuations during the Last Glacial (ca. 33-17 ka BP): insights into the continental signature of Heinrich Stadials |
title_full_unstemmed |
Linking Danube River Activity to Alpine Ice-Sheet Fluctuations during the Last Glacial (ca. 33-17 ka BP): insights into the continental signature of Heinrich Stadials |
title_sort |
linking danube river activity to alpine ice-sheet fluctuations during the last glacial (ca. 33-17 ka bp): insights into the continental signature of heinrich stadials |
publisher |
SEANOE |
publishDate |
2020 |
url |
https://doi.org/10.17882/70660 https://www.seanoe.org/data/00594/70660/ |
op_coverage |
North 57.302156, South 38.635178, East 36.984907, West 4.171825 |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Greenland Ice Sheet North Atlantic Sea ice |
genre_facet |
Greenland Ice Sheet North Atlantic Sea ice |
op_relation |
doi:10.17882/70660 https://doi.org/10.17882/70660 https://www.seanoe.org/data/00594/70660/ |
op_rights |
CC0 |
op_rightsnorm |
CC0 |
op_doi |
https://doi.org/10.17882/70660 |
_version_ |
1766019649091141632 |