Dissolved Hafnium and Neodymium data measured on water samples during METEOR cruise M84/5 in the Bay of Biscay
We present dissolved neodymium and hafnium concentrations and radiogenic isotope compositions of surface and deep-water masses from the Bay of Biscay. Neodymium isotope signatures in surface waters of the Bay of Biscay are dominated by local weathering inputs from the surrounding continental margin....
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.902808 2023-05-15T17:33:17+02:00 Dissolved Hafnium and Neodymium data measured on water samples during METEOR cruise M84/5 in the Bay of Biscay Dausmann, Veit Frank, Martin Zieringer, Moritz MEDIAN LATITUDE: 44.232651 * MEDIAN LONGITUDE: -5.479520 * SOUTH-BOUND LATITUDE: 42.991550 * WEST-BOUND LONGITUDE: -9.718670 * NORTH-BOUND LATITUDE: 46.232500 * EAST-BOUND LONGITUDE: -2.616500 * DATE/TIME START: 2011-06-02T00:00:00 * DATE/TIME END: 2011-06-17T00:00:00 * MINIMUM DEPTH, water: 3 m * MAXIMUM DEPTH, water: 3250 m 2019-06-20 text/tab-separated-values, 452 data points https://doi.pangaea.de/10.1594/PANGAEA.902808 https://doi.org/10.1594/PANGAEA.902808 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.902808 https://doi.org/10.1594/PANGAEA.902808 CC-BY-4.0: Creative Commons Attribution 4.0 International Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Supplement to: Dausmann, Veit; Frank, Martin; Zieringer, Moritz (2020): Water mass mixing versus local weathering inputs along the Bay of Biscay: Evidence from dissolved hafnium and neodymium isotopes. Marine Chemistry, 224, 103844, https://doi.org/10.1016/j.marchem.2020.103844 Area/locality Bay of Biscay CTD/Rosette CTD-RO Date/Time of event DEPTH water Elevation of event Event label Hafnium dissolved Hafnium-176/Hafnium-177 standard deviation Latitude of event Longitude of event M84/5 M84/5_559 M84/5_560 M84/5_576 M84/5_577 M84/5_589 M84/5_611 M84/5_612 M84/5_615 M84/5_624 M84/5_625 M84/5_635 M84/5_638 M84/5_639 M84/5_666 M84/5_SW01 M84/5_SW02 M84/5_SW03 M84/5_SW04 M84/5_SW05 M84/5_SW06 Membrane pump Meteor (1986) MP Neodymium North Atlantic Ocean Salinity Temperature Volume ε-Hafnium Dataset 2019 ftpangaea https://doi.org/10.1594/PANGAEA.902808 https://doi.org/10.1016/j.marchem.2020.103844 2023-01-20T09:12:28Z We present dissolved neodymium and hafnium concentrations and radiogenic isotope compositions of surface and deep-water masses from the Bay of Biscay. Neodymium isotope signatures in surface waters of the Bay of Biscay are dominated by local weathering inputs from the surrounding continental margin. Subsurface Eastern North Atlantic Central Water (ENACW) shows a distinct Nd isotope signature (εNd≅‑12.0) at the southwestern-most station and is significantly diluted by mixing with more radiogenic waters on its way north along the European margin. Furthermore, the Nd isotope data clearly show a declining fraction of Mediterranean Outflow Water (MOW) at intermediate depths on its way north indicating that only 40% to 60% of MOW still present in the mixture at the Galician margin arrive at the stations further north in the Bay of Biscay. A potentially seasonal variability of the flow path of MOW is identified when comparing the results of the Nd isotope compositions and salinity data of this study with those of earlier studies from the area. In agreement with Nd isotope and concentration analyses Hf isotope composition of MOW is affected by large-scale inputs of terrigenous material into the Mediterranean as can be deduced from elevated Hf concentrations at the Galician margin. Hf isotope signatures of all water masses of the Bay of Biscay, moreover, are overprinted by local weathering inputs and do not reflect water mass mixing. However, combined dissolved Nd and Hf isotopes serve as a useful indicator of local weathering influences on signatures expected from long distance admixture. Dataset North Atlantic PANGAEA - Data Publisher for Earth & Environmental Science ENVELOPE(-9.718670,-2.616500,46.232500,42.991550) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
Area/locality Bay of Biscay CTD/Rosette CTD-RO Date/Time of event DEPTH water Elevation of event Event label Hafnium dissolved Hafnium-176/Hafnium-177 standard deviation Latitude of event Longitude of event M84/5 M84/5_559 M84/5_560 M84/5_576 M84/5_577 M84/5_589 M84/5_611 M84/5_612 M84/5_615 M84/5_624 M84/5_625 M84/5_635 M84/5_638 M84/5_639 M84/5_666 M84/5_SW01 M84/5_SW02 M84/5_SW03 M84/5_SW04 M84/5_SW05 M84/5_SW06 Membrane pump Meteor (1986) MP Neodymium North Atlantic Ocean Salinity Temperature Volume ε-Hafnium |
spellingShingle |
Area/locality Bay of Biscay CTD/Rosette CTD-RO Date/Time of event DEPTH water Elevation of event Event label Hafnium dissolved Hafnium-176/Hafnium-177 standard deviation Latitude of event Longitude of event M84/5 M84/5_559 M84/5_560 M84/5_576 M84/5_577 M84/5_589 M84/5_611 M84/5_612 M84/5_615 M84/5_624 M84/5_625 M84/5_635 M84/5_638 M84/5_639 M84/5_666 M84/5_SW01 M84/5_SW02 M84/5_SW03 M84/5_SW04 M84/5_SW05 M84/5_SW06 Membrane pump Meteor (1986) MP Neodymium North Atlantic Ocean Salinity Temperature Volume ε-Hafnium Dausmann, Veit Frank, Martin Zieringer, Moritz Dissolved Hafnium and Neodymium data measured on water samples during METEOR cruise M84/5 in the Bay of Biscay |
topic_facet |
Area/locality Bay of Biscay CTD/Rosette CTD-RO Date/Time of event DEPTH water Elevation of event Event label Hafnium dissolved Hafnium-176/Hafnium-177 standard deviation Latitude of event Longitude of event M84/5 M84/5_559 M84/5_560 M84/5_576 M84/5_577 M84/5_589 M84/5_611 M84/5_612 M84/5_615 M84/5_624 M84/5_625 M84/5_635 M84/5_638 M84/5_639 M84/5_666 M84/5_SW01 M84/5_SW02 M84/5_SW03 M84/5_SW04 M84/5_SW05 M84/5_SW06 Membrane pump Meteor (1986) MP Neodymium North Atlantic Ocean Salinity Temperature Volume ε-Hafnium |
description |
We present dissolved neodymium and hafnium concentrations and radiogenic isotope compositions of surface and deep-water masses from the Bay of Biscay. Neodymium isotope signatures in surface waters of the Bay of Biscay are dominated by local weathering inputs from the surrounding continental margin. Subsurface Eastern North Atlantic Central Water (ENACW) shows a distinct Nd isotope signature (εNd≅‑12.0) at the southwestern-most station and is significantly diluted by mixing with more radiogenic waters on its way north along the European margin. Furthermore, the Nd isotope data clearly show a declining fraction of Mediterranean Outflow Water (MOW) at intermediate depths on its way north indicating that only 40% to 60% of MOW still present in the mixture at the Galician margin arrive at the stations further north in the Bay of Biscay. A potentially seasonal variability of the flow path of MOW is identified when comparing the results of the Nd isotope compositions and salinity data of this study with those of earlier studies from the area. In agreement with Nd isotope and concentration analyses Hf isotope composition of MOW is affected by large-scale inputs of terrigenous material into the Mediterranean as can be deduced from elevated Hf concentrations at the Galician margin. Hf isotope signatures of all water masses of the Bay of Biscay, moreover, are overprinted by local weathering inputs and do not reflect water mass mixing. However, combined dissolved Nd and Hf isotopes serve as a useful indicator of local weathering influences on signatures expected from long distance admixture. |
format |
Dataset |
author |
Dausmann, Veit Frank, Martin Zieringer, Moritz |
author_facet |
Dausmann, Veit Frank, Martin Zieringer, Moritz |
author_sort |
Dausmann, Veit |
title |
Dissolved Hafnium and Neodymium data measured on water samples during METEOR cruise M84/5 in the Bay of Biscay |
title_short |
Dissolved Hafnium and Neodymium data measured on water samples during METEOR cruise M84/5 in the Bay of Biscay |
title_full |
Dissolved Hafnium and Neodymium data measured on water samples during METEOR cruise M84/5 in the Bay of Biscay |
title_fullStr |
Dissolved Hafnium and Neodymium data measured on water samples during METEOR cruise M84/5 in the Bay of Biscay |
title_full_unstemmed |
Dissolved Hafnium and Neodymium data measured on water samples during METEOR cruise M84/5 in the Bay of Biscay |
title_sort |
dissolved hafnium and neodymium data measured on water samples during meteor cruise m84/5 in the bay of biscay |
publisher |
PANGAEA |
publishDate |
2019 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.902808 https://doi.org/10.1594/PANGAEA.902808 |
op_coverage |
MEDIAN LATITUDE: 44.232651 * MEDIAN LONGITUDE: -5.479520 * SOUTH-BOUND LATITUDE: 42.991550 * WEST-BOUND LONGITUDE: -9.718670 * NORTH-BOUND LATITUDE: 46.232500 * EAST-BOUND LONGITUDE: -2.616500 * DATE/TIME START: 2011-06-02T00:00:00 * DATE/TIME END: 2011-06-17T00:00:00 * MINIMUM DEPTH, water: 3 m * MAXIMUM DEPTH, water: 3250 m |
long_lat |
ENVELOPE(-9.718670,-2.616500,46.232500,42.991550) |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
Supplement to: Dausmann, Veit; Frank, Martin; Zieringer, Moritz (2020): Water mass mixing versus local weathering inputs along the Bay of Biscay: Evidence from dissolved hafnium and neodymium isotopes. Marine Chemistry, 224, 103844, https://doi.org/10.1016/j.marchem.2020.103844 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.902808 https://doi.org/10.1594/PANGAEA.902808 |
op_rights |
CC-BY-4.0: Creative Commons Attribution 4.0 International Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1594/PANGAEA.902808 https://doi.org/10.1016/j.marchem.2020.103844 |
_version_ |
1766131759638904832 |