Radionuclides measured on water bottle samples ...
Actinium is one of the rarest naturally occurring elements on earth. We measured its longest-lived isotope 227Ac (half-life 21.77 yr) for the first time in the water column of the Southeast Pacific, the Central Arctic, the Antarctic Circumpolar Current (ACC) and the Weddell Gyre (WG). Besides the pr...
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ftdatacite:10.1594/pangaea.761951 2024-03-31T07:49:06+00:00 Radionuclides measured on water bottle samples ... Geibert, Walter Rutgers van der Loeff, Michiel M Hanfland, Claudia Dauelsberg, Hans-Jürgen 2002 application/zip https://dx.doi.org/10.1594/pangaea.761951 https://doi.pangaea.de/10.1594/PANGAEA.761951 en eng PANGAEA https://dx.doi.org/10.1016/s0012-821x(02)00512-5 Creative Commons Attribution 3.0 Unported https://creativecommons.org/licenses/by/3.0/legalcode cc-by-3.0 CTD/Rosette MultiCorer In situ pump ANT-XVI/3 ARK-VIII/3 ANT-X/5 ANT-XI/4 ANT-XII/4 Polarstern Joint Global Ocean Flux Study JGOFS Marine Geochemistry @ AWI AWI_MarGeoChem Paleoenvironmental Reconstructions from Marine Sediments @ AWI AWI_Paleo Supplementary Publication Series of Datasets article Collection 2002 ftdatacite https://doi.org/10.1594/pangaea.76195110.1016/s0012-821x(02)00512-5 2024-03-04T13:44:01Z Actinium is one of the rarest naturally occurring elements on earth. We measured its longest-lived isotope 227Ac (half-life 21.77 yr) for the first time in the water column of the Southeast Pacific, the Central Arctic, the Antarctic Circumpolar Current (ACC) and the Weddell Gyre (WG). Besides the profile in the Southeast Pacific, which confirms earlier findings about the role of diapycnal mixing for 227Ac distribution, we found three other different types of vertical profiles. These profiles point to a prominent role of advection for 227Ac distribution, especially in the Southern Ocean. Depending on the type of profile found, 227Ac is proposed as a tracer for different oceanographic questions. In the Southern Ocean, up to 4.93±0.32 dpm/m**3 227Ac is found close to the sea floor, which is the highest concentration ever observed in the ocean. Close to the sea surface in the WG, 0.46±0.05 dpm/m**3 227Acex (227Ac in excess of its progenitor 231Pa) is detected. We use 227Acex there to determine the upwelling ... : Supplement to: Geibert, Walter; Rutgers van der Loeff, Michiel M; Hanfland, Claudia; Dauelsberg, Hans-Jürgen (2002): Actinium-227 as a Deep-Sea Tracer: Sources, Distribution and Applications. Earth and Planetary Science Letters, 198(1-2), 147-165 ... Article in Journal/Newspaper Antarc* Antarctic Arctic Southern Ocean DataCite Metadata Store (German National Library of Science and Technology) Antarctic Arctic Pacific Southern Ocean The Antarctic Weddell |
institution |
Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
English |
topic |
CTD/Rosette MultiCorer In situ pump ANT-XVI/3 ARK-VIII/3 ANT-X/5 ANT-XI/4 ANT-XII/4 Polarstern Joint Global Ocean Flux Study JGOFS Marine Geochemistry @ AWI AWI_MarGeoChem Paleoenvironmental Reconstructions from Marine Sediments @ AWI AWI_Paleo |
spellingShingle |
CTD/Rosette MultiCorer In situ pump ANT-XVI/3 ARK-VIII/3 ANT-X/5 ANT-XI/4 ANT-XII/4 Polarstern Joint Global Ocean Flux Study JGOFS Marine Geochemistry @ AWI AWI_MarGeoChem Paleoenvironmental Reconstructions from Marine Sediments @ AWI AWI_Paleo Geibert, Walter Rutgers van der Loeff, Michiel M Hanfland, Claudia Dauelsberg, Hans-Jürgen Radionuclides measured on water bottle samples ... |
topic_facet |
CTD/Rosette MultiCorer In situ pump ANT-XVI/3 ARK-VIII/3 ANT-X/5 ANT-XI/4 ANT-XII/4 Polarstern Joint Global Ocean Flux Study JGOFS Marine Geochemistry @ AWI AWI_MarGeoChem Paleoenvironmental Reconstructions from Marine Sediments @ AWI AWI_Paleo |
description |
Actinium is one of the rarest naturally occurring elements on earth. We measured its longest-lived isotope 227Ac (half-life 21.77 yr) for the first time in the water column of the Southeast Pacific, the Central Arctic, the Antarctic Circumpolar Current (ACC) and the Weddell Gyre (WG). Besides the profile in the Southeast Pacific, which confirms earlier findings about the role of diapycnal mixing for 227Ac distribution, we found three other different types of vertical profiles. These profiles point to a prominent role of advection for 227Ac distribution, especially in the Southern Ocean. Depending on the type of profile found, 227Ac is proposed as a tracer for different oceanographic questions. In the Southern Ocean, up to 4.93±0.32 dpm/m**3 227Ac is found close to the sea floor, which is the highest concentration ever observed in the ocean. Close to the sea surface in the WG, 0.46±0.05 dpm/m**3 227Acex (227Ac in excess of its progenitor 231Pa) is detected. We use 227Acex there to determine the upwelling ... : Supplement to: Geibert, Walter; Rutgers van der Loeff, Michiel M; Hanfland, Claudia; Dauelsberg, Hans-Jürgen (2002): Actinium-227 as a Deep-Sea Tracer: Sources, Distribution and Applications. Earth and Planetary Science Letters, 198(1-2), 147-165 ... |
format |
Article in Journal/Newspaper |
author |
Geibert, Walter Rutgers van der Loeff, Michiel M Hanfland, Claudia Dauelsberg, Hans-Jürgen |
author_facet |
Geibert, Walter Rutgers van der Loeff, Michiel M Hanfland, Claudia Dauelsberg, Hans-Jürgen |
author_sort |
Geibert, Walter |
title |
Radionuclides measured on water bottle samples ... |
title_short |
Radionuclides measured on water bottle samples ... |
title_full |
Radionuclides measured on water bottle samples ... |
title_fullStr |
Radionuclides measured on water bottle samples ... |
title_full_unstemmed |
Radionuclides measured on water bottle samples ... |
title_sort |
radionuclides measured on water bottle samples ... |
publisher |
PANGAEA |
publishDate |
2002 |
url |
https://dx.doi.org/10.1594/pangaea.761951 https://doi.pangaea.de/10.1594/PANGAEA.761951 |
geographic |
Antarctic Arctic Pacific Southern Ocean The Antarctic Weddell |
geographic_facet |
Antarctic Arctic Pacific Southern Ocean The Antarctic Weddell |
genre |
Antarc* Antarctic Arctic Southern Ocean |
genre_facet |
Antarc* Antarctic Arctic Southern Ocean |
op_relation |
https://dx.doi.org/10.1016/s0012-821x(02)00512-5 |
op_rights |
Creative Commons Attribution 3.0 Unported https://creativecommons.org/licenses/by/3.0/legalcode cc-by-3.0 |
op_doi |
https://doi.org/10.1594/pangaea.76195110.1016/s0012-821x(02)00512-5 |
_version_ |
1795038137554042880 |