Dissolved REE concentrations from Tahiti's island-ocean interface (including submarine groundwater discharge, river, lagoon and coastal waters) and dissolved REE and Nd isotope compositions from three open ocean profiles on the Manihiki Plateau
The Rare Earth Elements (REEs) have been widely used to investigate marine biogeochemical processes as well as the sources and mixing of water masses. However, there are still important uncertainties about the global aqueous REE cycle with respect to the contributions of highly reactive basaltic min...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.884784 2024-09-15T17:43:24+00:00 Dissolved REE concentrations from Tahiti's island-ocean interface (including submarine groundwater discharge, river, lagoon and coastal waters) and dissolved REE and Nd isotope compositions from three open ocean profiles on the Manihiki Plateau Molina-Kescher, Mario Hathorne, Ed C Osborne, Anne H Behrens, Melanie K Kölling, Martin Pahnke, Katharina Frank, Martin MEDIAN LATITUDE: -12.406379 * MEDIAN LONGITUDE: -159.142491 * SOUTH-BOUND LATITUDE: -17.769900 * WEST-BOUND LONGITUDE: -166.200333 * NORTH-BOUND LATITUDE: -3.050000 * EAST-BOUND LONGITUDE: -149.163870 * DATE/TIME START: 2007-11-01T00:00:00 * DATE/TIME END: 2012-12-27T08:52:00 2018 application/zip, 3 datasets https://doi.pangaea.de/10.1594/PANGAEA.884784 https://doi.org/10.1594/PANGAEA.884784 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.884784 https://doi.org/10.1594/PANGAEA.884784 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess Supplement to: Molina-Kescher, Mario; Hathorne, Ed C; Osborne, Anne H; Behrens, Melanie K; Kölling, Martin; Pahnke, Katharina; Frank, Martin (2018): The Influence of Basaltic Islands on the Oceanic REE Distribution: A Case Study From the Tropical South Pacific. Frontiers in Marine Science, 5, https://doi.org/10.3389/fmars.2018.00050 dataset publication series 2018 ftpangaea https://doi.org/10.1594/PANGAEA.88478410.3389/fmars.2018.00050 2024-07-24T02:31:21Z The Rare Earth Elements (REEs) have been widely used to investigate marine biogeochemical processes as well as the sources and mixing of water masses. However, there are still important uncertainties about the global aqueous REE cycle with respect to the contributions of highly reactive basaltic minerals originating from volcanic islands and the role of Submarine Groundwater Discharge (SGD). Here we present dissolved REE concentrations obtained from waters at the island-ocean interface (including SGD, river, lagoon and coastal waters) from the island of Tahiti and from three detailed open ocean profiles on the Manihiki Plateau (including neodymium (Nd) isotope compositions), which are located in ocean currents downstream of Tahiti. Tahitian fresh waters have highly variable REE concentrations that likely result from variable water-rock interaction and removal by secondary minerals. In contrast to studies on other islands, the SGD samples do not exhibit elevated REE concentrations but have distinctive REE distributions and Y/Ho ratios. The basaltic Tahitian rocks impart a REE pattern to the waters characterized by a middle REE enrichment, with a peak at europium similar to groundwaters and coastal waters of other volcanic islands in the Pacific. However, the basaltic island REE characteristics (with the exception of elevated Y/Ho ratios) are lost during transport to the Manihiki Plateau within surface waters that also exhibit highly radiogenic Nd isotope signatures. Our new data demonstrate that REE concentrations are enriched in Tahitian coastal water, but without multidimensional sampling, basaltic island Nd flux estimates range over orders of magnitude from relatively small to globally significant. Antarctic Intermediate Water (AAIW) loses its characteristic Nd isotopic signature (-6 to-9) around the Manihiki Plateau as a consequence of mixing with South Equatorial Pacific Intermediate Water (SEqPIW), which shows more positive values (-1 to -2). However, an additional Nd input/exchange along the pathway of ... Other/Unknown Material Antarc* Antarctic PANGAEA - Data Publisher for Earth & Environmental Science ENVELOPE(-166.200333,-149.163870,-3.050000,-17.769900) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
description |
The Rare Earth Elements (REEs) have been widely used to investigate marine biogeochemical processes as well as the sources and mixing of water masses. However, there are still important uncertainties about the global aqueous REE cycle with respect to the contributions of highly reactive basaltic minerals originating from volcanic islands and the role of Submarine Groundwater Discharge (SGD). Here we present dissolved REE concentrations obtained from waters at the island-ocean interface (including SGD, river, lagoon and coastal waters) from the island of Tahiti and from three detailed open ocean profiles on the Manihiki Plateau (including neodymium (Nd) isotope compositions), which are located in ocean currents downstream of Tahiti. Tahitian fresh waters have highly variable REE concentrations that likely result from variable water-rock interaction and removal by secondary minerals. In contrast to studies on other islands, the SGD samples do not exhibit elevated REE concentrations but have distinctive REE distributions and Y/Ho ratios. The basaltic Tahitian rocks impart a REE pattern to the waters characterized by a middle REE enrichment, with a peak at europium similar to groundwaters and coastal waters of other volcanic islands in the Pacific. However, the basaltic island REE characteristics (with the exception of elevated Y/Ho ratios) are lost during transport to the Manihiki Plateau within surface waters that also exhibit highly radiogenic Nd isotope signatures. Our new data demonstrate that REE concentrations are enriched in Tahitian coastal water, but without multidimensional sampling, basaltic island Nd flux estimates range over orders of magnitude from relatively small to globally significant. Antarctic Intermediate Water (AAIW) loses its characteristic Nd isotopic signature (-6 to-9) around the Manihiki Plateau as a consequence of mixing with South Equatorial Pacific Intermediate Water (SEqPIW), which shows more positive values (-1 to -2). However, an additional Nd input/exchange along the pathway of ... |
format |
Other/Unknown Material |
author |
Molina-Kescher, Mario Hathorne, Ed C Osborne, Anne H Behrens, Melanie K Kölling, Martin Pahnke, Katharina Frank, Martin |
spellingShingle |
Molina-Kescher, Mario Hathorne, Ed C Osborne, Anne H Behrens, Melanie K Kölling, Martin Pahnke, Katharina Frank, Martin Dissolved REE concentrations from Tahiti's island-ocean interface (including submarine groundwater discharge, river, lagoon and coastal waters) and dissolved REE and Nd isotope compositions from three open ocean profiles on the Manihiki Plateau |
author_facet |
Molina-Kescher, Mario Hathorne, Ed C Osborne, Anne H Behrens, Melanie K Kölling, Martin Pahnke, Katharina Frank, Martin |
author_sort |
Molina-Kescher, Mario |
title |
Dissolved REE concentrations from Tahiti's island-ocean interface (including submarine groundwater discharge, river, lagoon and coastal waters) and dissolved REE and Nd isotope compositions from three open ocean profiles on the Manihiki Plateau |
title_short |
Dissolved REE concentrations from Tahiti's island-ocean interface (including submarine groundwater discharge, river, lagoon and coastal waters) and dissolved REE and Nd isotope compositions from three open ocean profiles on the Manihiki Plateau |
title_full |
Dissolved REE concentrations from Tahiti's island-ocean interface (including submarine groundwater discharge, river, lagoon and coastal waters) and dissolved REE and Nd isotope compositions from three open ocean profiles on the Manihiki Plateau |
title_fullStr |
Dissolved REE concentrations from Tahiti's island-ocean interface (including submarine groundwater discharge, river, lagoon and coastal waters) and dissolved REE and Nd isotope compositions from three open ocean profiles on the Manihiki Plateau |
title_full_unstemmed |
Dissolved REE concentrations from Tahiti's island-ocean interface (including submarine groundwater discharge, river, lagoon and coastal waters) and dissolved REE and Nd isotope compositions from three open ocean profiles on the Manihiki Plateau |
title_sort |
dissolved ree concentrations from tahiti's island-ocean interface (including submarine groundwater discharge, river, lagoon and coastal waters) and dissolved ree and nd isotope compositions from three open ocean profiles on the manihiki plateau |
publisher |
PANGAEA |
publishDate |
2018 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.884784 https://doi.org/10.1594/PANGAEA.884784 |
op_coverage |
MEDIAN LATITUDE: -12.406379 * MEDIAN LONGITUDE: -159.142491 * SOUTH-BOUND LATITUDE: -17.769900 * WEST-BOUND LONGITUDE: -166.200333 * NORTH-BOUND LATITUDE: -3.050000 * EAST-BOUND LONGITUDE: -149.163870 * DATE/TIME START: 2007-11-01T00:00:00 * DATE/TIME END: 2012-12-27T08:52:00 |
long_lat |
ENVELOPE(-166.200333,-149.163870,-3.050000,-17.769900) |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_source |
Supplement to: Molina-Kescher, Mario; Hathorne, Ed C; Osborne, Anne H; Behrens, Melanie K; Kölling, Martin; Pahnke, Katharina; Frank, Martin (2018): The Influence of Basaltic Islands on the Oceanic REE Distribution: A Case Study From the Tropical South Pacific. Frontiers in Marine Science, 5, https://doi.org/10.3389/fmars.2018.00050 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.884784 https://doi.org/10.1594/PANGAEA.884784 |
op_rights |
CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1594/PANGAEA.88478410.3389/fmars.2018.00050 |
_version_ |
1810490365594042368 |