Details of Intermediate ocean circulation and cryosphere dynamics in the northeast Atlantic during Heinrich Stadials: benthic foraminiferal assemblage response
BackDataset identification
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Title of dataset | Intermediate ocean circulation and cryosphere dynamics in the northeast Atlantic during Heinrich Stadials: benthic foraminiferal assemblage response |
Narrative summary of dataset | The interaction between ocean circulation and ice-sheet dynamics plays a key role in the Quaternary climate. Compared to the surface and deep compartments of the Atlantic Meridional Overturning Circulation (AMOC), the study of intermediate depths during key time periods, such as Heinrich Stadials (HSs), remains poorly documented, especially in the Northeast Atlantic. Here we use benthic foraminiferal assemblage data to trace paleoenvironmental changes from ~32 to 14 ka cal BP at ~1000 m depth in the Bay of Biscay. Our results highlight the high sensitivity of benthic foraminifera, with species-specific responses, to continental (European Ice Sheet dynamics) and marine (AMOC) forcing factors during the last three HSs. In general, HSs were characterized by the concomitant presence of meso-oligotrophic and anoxia indicator species and the low abundance of high-energy indicator species. This confirms an overall sluggish intermediate circulation during the three HSs in the Northeast Atlantic. HS1 is distinctive by the abundance of high-organic flux indicator species during its early phase. This is consistent with the fact that HS1 was, by far, the most important period of ice-sheet retreat and meltwater release to the ocean over the studied time interval. Finally, foraminifera depict the mid-HS2 re-ventilation event due to regional glacier instabilities. Important Note: This submission has been initially submitted to SEA scieNtific Open data Edition (SEANOE) publication service and received the recorded DOI. The metadata elements have been further processed (refined) in EMODnet Ingestion Service in order to conform with the Data Submission Service specifications. |
Cruise | |
Start date | 2009-01-01 |
End date | 2010-12-31 |
Responsible organisations
Country | France |
Organisation name | Ifremer, Scientific Information Systems for the sea |
Role of organisation | Dataset Holding Organisation |
Country | France |
Organisation name | SEA scieNtific Open data Edition |
Role of organisation | Publisher |
How to cite | Depuydt Pauline, Mojtahid Meryem, Barras Christine, Bouhdayad Fatima Zohra, Toucanne Samuel (2022). Intermediate ocean circulation and cryosphere dynamics in the northeast Atlantic during Heinrich Stadials: benthic foraminiferal assemblage response. SEANOE. https://doi.org/10.17882/88029 In addition to properly cite this dataset, it would be appreciated that the following work(s) be cited too, when using this dataset in a publication : Depuydt Pauline, Mojtahid Meryem, Barras Christine, Bouhdayad Fatima Zohra, Toucanne Samuel (2022). Intermediate ocean circulation and cryosphere dynamics in the northeast Atlantic during Heinrich Stadials: benthic foraminiferal assemblage response. Journal of Quaternary Science https://doi.org/10.1002/jqs.3444 |
Dataset availability
Original dataset download link | https://cloud.emodnet-ingestion.eu/index.php/s/69XovvSJ1QjGuu9 |
Dataset format | Documents |
Public access | No limitations |
License for use | CC-BY 4.0 |
Type | Dataset |
DOI | https://doi.org/10.17882/88029 |
Locations
Map | © OpenStreetMap contributors |
Latitude north boundary | 47.5 |
Longitude east boundary | -7 |
Latitude south boundary | 45.5 |
Longitude west boundary | -3.5 |
Sea area | North Atlantic Ocean |
Bay of Biscay | |
Atlantic Ocean | |
European mainland | |
Northeast Atlantic Ocean (40W) | |
Vertical extent maximum | 1360 Centimetres |
Data types, collection and processing
Observation type | inapplicable |
Parameter | Sediment age |
Platform type | research vessel |
Platform name | Pourquoi pas? |
Data quality processing information | Raw data |
Process information
Submitting organisation | Laboratory Of Planetology And Geodynamics - UMR 6112 - Angers |
Submission identifier (UUID) | a53ad03f-3838-8383-3830-000000088029 |
Date of dataset creation | 2022-05-01 |
Date of dataset revision | 2022-09-13 |
Date of metadata creation | 2022-9-14 |
Date of metadata latest revision | 2023-03-30 |
Date of publishing | 2023-04-16 |
Processing data centre | Ifremer, Scientific Information Systems for the sea |
Summary record-ID | 1310 |