(Figure 3) Dissolved aluminium concentrations during POLARSTERN Cruise ANT-XXIV/3, supplement to: Middag, Rob; van Slooten, C; de Baar, Hein J W; Laan, Patrick (2011): Dissolved aluminium in the Southern Ocean. Deep Sea Research Part II: Topical Studies in Oceanography, 58(25-26), 2647-2660
Dissolved aluminium (Al) occurs in a wide range of concentrations in the world oceans. The concentrations of Al in the Southern Ocean are among the lowest ever observed. An all-titanium CTD sampling system makes it possible to study complete deep ocean sections of Al and other trace elements with th...
Main Authors: | , , , |
---|---|
Format: | Dataset |
Language: | English |
Published: |
PANGAEA - Data Publisher for Earth & Environmental Science
2011
|
Subjects: | |
Online Access: | https://dx.doi.org/10.1594/pangaea.816968 https://doi.pangaea.de/10.1594/PANGAEA.816968 |
id |
ftdatacite:10.1594/pangaea.816968 |
---|---|
record_format |
openpolar |
institution |
Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
English |
topic |
Event label Latitude of event Longitude of event DATE/TIME Elevation of event DEPTH, water Bottle number Oxygen Oxygen saturation Oxygen, apparent utilization Aluminium Quality flag Aluminium, standard deviation CTD/Rosette, ultra clean CTD ANT-XXIV/3 Polarstern Global marine biogeochemical cycles of trace elements and their isotopes GEOTRACES International Polar Year 2007-2008 IPY |
spellingShingle |
Event label Latitude of event Longitude of event DATE/TIME Elevation of event DEPTH, water Bottle number Oxygen Oxygen saturation Oxygen, apparent utilization Aluminium Quality flag Aluminium, standard deviation CTD/Rosette, ultra clean CTD ANT-XXIV/3 Polarstern Global marine biogeochemical cycles of trace elements and their isotopes GEOTRACES International Polar Year 2007-2008 IPY Middag, Rob van Slooten, C de Baar, Hein J W Laan, Patrick (Figure 3) Dissolved aluminium concentrations during POLARSTERN Cruise ANT-XXIV/3, supplement to: Middag, Rob; van Slooten, C; de Baar, Hein J W; Laan, Patrick (2011): Dissolved aluminium in the Southern Ocean. Deep Sea Research Part II: Topical Studies in Oceanography, 58(25-26), 2647-2660 |
topic_facet |
Event label Latitude of event Longitude of event DATE/TIME Elevation of event DEPTH, water Bottle number Oxygen Oxygen saturation Oxygen, apparent utilization Aluminium Quality flag Aluminium, standard deviation CTD/Rosette, ultra clean CTD ANT-XXIV/3 Polarstern Global marine biogeochemical cycles of trace elements and their isotopes GEOTRACES International Polar Year 2007-2008 IPY |
description |
Dissolved aluminium (Al) occurs in a wide range of concentrations in the world oceans. The concentrations of Al in the Southern Ocean are among the lowest ever observed. An all-titanium CTD sampling system makes it possible to study complete deep ocean sections of Al and other trace elements with the same high vertical resolution of 24 depths as normal for traditional CTD/Rosette sampling. Overall, 470 new data points of Al are reported for 22 full depth stations and 24 surface sampling positions along one transect. This transect consisted of 18 stations on the zero meridian proper from 51°57'S until 69°24'S, and 4 stations somewhat to the northeast towards Cape Town from 42°20'S, 09°E to 50°17'S, 01°27'E. The actual concentrations of Al in the Southern Ocean were lower than previously reported. The concentration of Al in the upper 25 m was relatively elevated with an average concentration of 0.71 nM (n=22; S.D.=0.43 nM), most likely due to atmospheric input by a suggested combination of direct atmospheric (wet and dry) input and indirect atmospheric input via melting sea ice. Below the surface waters there was a distinct Al minimum with an average concentration of 0.33 nM (n=22; S.D.=0.13 nM) at an average depth of 120 m. In the deep southernmost Weddell Basin the concentration of Al increased with depth to ~0.8 nM at 4000 m, and a higher concentration of ~1.5 nM in the ~4500-5200 m deep Weddell Sea Bottom Water. Over the Bouvet triple junction region, where three deep ocean ridges meet, the concentration of Al increased to ~1.4 nM at about 2000 m depth over the ridge crest. In the deep basin north of the Bouvet region the concentration of Al increased to higher deep values of 4-6 nM due to influence of North Atlantic Deep Water. In general the intermediate and deep distribution of Al results from the mixing of water masses with different origins, the formation of deep water and additional input from sedimentary sources at sea floor elevations. No significant correlation between Al and silicate (Si) was observed. This is in contrast to some other ocean regions. In the Southern Ocean the supply of Al is extremely low and any signal from Al uptake and dissolution with biogenic silica is undetectable against the high dissolved Si and low dissolved Al concentrations. Here the Al-Si relation in the deep ocean is uncoupled. This is due to the scavenging and subsequent loss of the water column of Al, whereas the concentration of Si increases in the deep ocean due to its input from deep dissolution of biogenic diatom frustules settling from the surface layer. : Data was taken from the supplementary table given in the article, oxygen saturation included. Data extracted in the frame of a joint ICSTI/PANGAEA IPY effort, see http://doi.pangaea.de/10.1594/PANGAEA.150150 |
format |
Dataset |
author |
Middag, Rob van Slooten, C de Baar, Hein J W Laan, Patrick |
author_facet |
Middag, Rob van Slooten, C de Baar, Hein J W Laan, Patrick |
author_sort |
Middag, Rob |
title |
(Figure 3) Dissolved aluminium concentrations during POLARSTERN Cruise ANT-XXIV/3, supplement to: Middag, Rob; van Slooten, C; de Baar, Hein J W; Laan, Patrick (2011): Dissolved aluminium in the Southern Ocean. Deep Sea Research Part II: Topical Studies in Oceanography, 58(25-26), 2647-2660 |
title_short |
(Figure 3) Dissolved aluminium concentrations during POLARSTERN Cruise ANT-XXIV/3, supplement to: Middag, Rob; van Slooten, C; de Baar, Hein J W; Laan, Patrick (2011): Dissolved aluminium in the Southern Ocean. Deep Sea Research Part II: Topical Studies in Oceanography, 58(25-26), 2647-2660 |
title_full |
(Figure 3) Dissolved aluminium concentrations during POLARSTERN Cruise ANT-XXIV/3, supplement to: Middag, Rob; van Slooten, C; de Baar, Hein J W; Laan, Patrick (2011): Dissolved aluminium in the Southern Ocean. Deep Sea Research Part II: Topical Studies in Oceanography, 58(25-26), 2647-2660 |
title_fullStr |
(Figure 3) Dissolved aluminium concentrations during POLARSTERN Cruise ANT-XXIV/3, supplement to: Middag, Rob; van Slooten, C; de Baar, Hein J W; Laan, Patrick (2011): Dissolved aluminium in the Southern Ocean. Deep Sea Research Part II: Topical Studies in Oceanography, 58(25-26), 2647-2660 |
title_full_unstemmed |
(Figure 3) Dissolved aluminium concentrations during POLARSTERN Cruise ANT-XXIV/3, supplement to: Middag, Rob; van Slooten, C; de Baar, Hein J W; Laan, Patrick (2011): Dissolved aluminium in the Southern Ocean. Deep Sea Research Part II: Topical Studies in Oceanography, 58(25-26), 2647-2660 |
title_sort |
(figure 3) dissolved aluminium concentrations during polarstern cruise ant-xxiv/3, supplement to: middag, rob; van slooten, c; de baar, hein j w; laan, patrick (2011): dissolved aluminium in the southern ocean. deep sea research part ii: topical studies in oceanography, 58(25-26), 2647-2660 |
publisher |
PANGAEA - Data Publisher for Earth & Environmental Science |
publishDate |
2011 |
url |
https://dx.doi.org/10.1594/pangaea.816968 https://doi.pangaea.de/10.1594/PANGAEA.816968 |
long_lat |
ENVELOPE(3.358,3.358,-54.422,-54.422) ENVELOPE(32.019,32.019,-55.568,-55.568) |
geographic |
Southern Ocean Weddell Sea Weddell Bouvet Weddell Basin |
geographic_facet |
Southern Ocean Weddell Sea Weddell Bouvet Weddell Basin |
genre |
International Polar Year IPY North Atlantic Deep Water North Atlantic Sea ice Southern Ocean Weddell Sea |
genre_facet |
International Polar Year IPY North Atlantic Deep Water North Atlantic Sea ice Southern Ocean Weddell Sea |
op_relation |
https://dx.doi.org/10.1016/j.dsr2.2011.03.001 |
op_rights |
Creative Commons Attribution 3.0 Unported https://creativecommons.org/licenses/by/3.0/legalcode cc-by-3.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1594/pangaea.816968 https://doi.org/10.1016/j.dsr2.2011.03.001 |
_version_ |
1766044584114126848 |
spelling |
ftdatacite:10.1594/pangaea.816968 2023-05-15T16:53:58+02:00 (Figure 3) Dissolved aluminium concentrations during POLARSTERN Cruise ANT-XXIV/3, supplement to: Middag, Rob; van Slooten, C; de Baar, Hein J W; Laan, Patrick (2011): Dissolved aluminium in the Southern Ocean. Deep Sea Research Part II: Topical Studies in Oceanography, 58(25-26), 2647-2660 Middag, Rob van Slooten, C de Baar, Hein J W Laan, Patrick 2011 text/tab-separated-values https://dx.doi.org/10.1594/pangaea.816968 https://doi.pangaea.de/10.1594/PANGAEA.816968 en eng PANGAEA - Data Publisher for Earth & Environmental Science https://dx.doi.org/10.1016/j.dsr2.2011.03.001 Creative Commons Attribution 3.0 Unported https://creativecommons.org/licenses/by/3.0/legalcode cc-by-3.0 CC-BY Event label Latitude of event Longitude of event DATE/TIME Elevation of event DEPTH, water Bottle number Oxygen Oxygen saturation Oxygen, apparent utilization Aluminium Quality flag Aluminium, standard deviation CTD/Rosette, ultra clean CTD ANT-XXIV/3 Polarstern Global marine biogeochemical cycles of trace elements and their isotopes GEOTRACES International Polar Year 2007-2008 IPY Supplementary Dataset dataset Dataset 2011 ftdatacite https://doi.org/10.1594/pangaea.816968 https://doi.org/10.1016/j.dsr2.2011.03.001 2021-11-05T12:55:41Z Dissolved aluminium (Al) occurs in a wide range of concentrations in the world oceans. The concentrations of Al in the Southern Ocean are among the lowest ever observed. An all-titanium CTD sampling system makes it possible to study complete deep ocean sections of Al and other trace elements with the same high vertical resolution of 24 depths as normal for traditional CTD/Rosette sampling. Overall, 470 new data points of Al are reported for 22 full depth stations and 24 surface sampling positions along one transect. This transect consisted of 18 stations on the zero meridian proper from 51°57'S until 69°24'S, and 4 stations somewhat to the northeast towards Cape Town from 42°20'S, 09°E to 50°17'S, 01°27'E. The actual concentrations of Al in the Southern Ocean were lower than previously reported. The concentration of Al in the upper 25 m was relatively elevated with an average concentration of 0.71 nM (n=22; S.D.=0.43 nM), most likely due to atmospheric input by a suggested combination of direct atmospheric (wet and dry) input and indirect atmospheric input via melting sea ice. Below the surface waters there was a distinct Al minimum with an average concentration of 0.33 nM (n=22; S.D.=0.13 nM) at an average depth of 120 m. In the deep southernmost Weddell Basin the concentration of Al increased with depth to ~0.8 nM at 4000 m, and a higher concentration of ~1.5 nM in the ~4500-5200 m deep Weddell Sea Bottom Water. Over the Bouvet triple junction region, where three deep ocean ridges meet, the concentration of Al increased to ~1.4 nM at about 2000 m depth over the ridge crest. In the deep basin north of the Bouvet region the concentration of Al increased to higher deep values of 4-6 nM due to influence of North Atlantic Deep Water. In general the intermediate and deep distribution of Al results from the mixing of water masses with different origins, the formation of deep water and additional input from sedimentary sources at sea floor elevations. No significant correlation between Al and silicate (Si) was observed. This is in contrast to some other ocean regions. In the Southern Ocean the supply of Al is extremely low and any signal from Al uptake and dissolution with biogenic silica is undetectable against the high dissolved Si and low dissolved Al concentrations. Here the Al-Si relation in the deep ocean is uncoupled. This is due to the scavenging and subsequent loss of the water column of Al, whereas the concentration of Si increases in the deep ocean due to its input from deep dissolution of biogenic diatom frustules settling from the surface layer. : Data was taken from the supplementary table given in the article, oxygen saturation included. Data extracted in the frame of a joint ICSTI/PANGAEA IPY effort, see http://doi.pangaea.de/10.1594/PANGAEA.150150 Dataset International Polar Year IPY North Atlantic Deep Water North Atlantic Sea ice Southern Ocean Weddell Sea DataCite Metadata Store (German National Library of Science and Technology) Southern Ocean Weddell Sea Weddell Bouvet ENVELOPE(3.358,3.358,-54.422,-54.422) Weddell Basin ENVELOPE(32.019,32.019,-55.568,-55.568) |