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  • 1
    Online Resource
    Online Resource
    Sources and transport of dissolved iron and manganese along the continental margin of the Bay of Biscay
    Copernicus GmbH ; 2007
    In:  Biogeosciences Vol. 4, No. 2 ( 2007-03-14), p. 181-194
    Details
    In: Biogeosciences, Copernicus GmbH, Vol. 4, No. 2 ( 2007-03-14), p. 181-194
    Abstract: Abstract. Dissolved iron (DFe; 〈0.2 µm) and dissolved manganese (DMn; 〈0.2 µm) concentrations were determined in the water column of the Bay of Biscay (eastern North Atlantic Ocean) in March 2002. The samples were collected along a transect traversing from the European continental shelf over the continental slope. The highest DFe and DMn concentrations (2.39 nM and 6.10 nM, respectively) were observed in the bottom waters on the shelf at stations closest to the coast. The release of trace metal from resuspended particles and the diffusion from pore waters were probably at the origin of elevated DFe and DMn concentrations in the Bottom Boundary Layer (BBL). In the slope region, the highest total dissolvable iron (TDFe), DFe and DMn values (24.6 nM, 1.58 nM and 2.12 nM, respectively) were observed close to the bottom at depth of ca.~600–700 m. Internal wave activity and slope circulation are thought to be at the origin of this phenomenon. These processes were also very likely the cause of elevated concentrations (DFe: 1.27 nM, DMn: 2.34 nM) measured in surface waters of stations located in the same area. At stations off the continental slope, the vertical distribution of both metals were typical of open ocean conditions, indicating that inputs from the continental margin did not impact the metal distributions in the offshore waters.
    Type of Medium: Online Resource
    ISSN: 1726-4189
    URL: Article
    DOI: 10.5194/bg-4-181-2007
    Language: English
    Publisher: Copernicus GmbH
    Publication Date: 2007
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  • 2
    Online Resource
    Online Resource
    Dissolved Fe across the Weddell Sea and Drake Passage: impact of DFe on nutrient uptake
    Copernicus GmbH ; 2014
    In:  Biogeosciences Vol. 11, No. 3 ( 2014-02-06), p. 651-669
    Details
    In: Biogeosciences, Copernicus GmbH, Vol. 11, No. 3 ( 2014-02-06), p. 651-669
    Abstract: Abstract. This manuscript reports the first full depth distributions of dissolved iron (DFe) over a high-resolution Weddell Sea and Drake Passage transect. Very low dissolved DFe concentrations (0.01–0.1 nM range) were observed in the surface waters of the Weddell Sea, and within the Drake Passage polar regime. Locally, enrichment in surface DFe was observed, likely due to recent ice melt (Weddell Sea) or dust deposition (Drake Passage). As expected, in low DFe regions, usually a small silicate drawdown compared to the nitrate drawdown was observed. However, the difference in drawdown between these nutrients appeared not related to DFe availability in the western Weddell Sea. In this region with relatively small diatoms, no relationship between N : P and N : Si removal ratios and DFe was observed. In comparison, along the Greenwich Meridian (Klunder et al., 2011a), where diatoms are significantly larger, the N : P and N : Si removal ratios did increase with increasing DFe. These findings confirm the important role of DFe in biologically mediated nutrient cycles in the Southern Ocean and imply DFe availability might play a role in shaping phytoplankton communities and constraining cell sizes. Over the shelf around the Antarctic Peninsula, higher DFe concentrations (〉1.5 nM) were observed. These elevated concentrations of Fe were transported into Drake Passage along isopycnal surfaces. Near the South American continent, high (〉2 nM) DFe concentrations were caused by fluvial/glacial input of DFe. On the Weddell Sea side of the Peninsula region, formation of deep water (by downslope convection) caused relatively high Fe (0.6–0.8 nM) concentrations in the bottom waters relative to the water masses at mid-depth (0.2–0.4 nM). During transit of Weddell Sea Bottom Water to the Drake Passage, through the Scotia Sea, additional DFe is taken up from seafloor sources, resulting in highest bottom water concentrations in the southernmost part of the Drake Passage in excess of 1 nM. The Weddell Sea Deep Water concentrations (∼0.32 nM) were consistent with the lowest DFe concentrations observed in Antarctic bottom water in the Atlantic Ocean.
    Type of Medium: Online Resource
    ISSN: 1726-4189
    URL: Article
    URL: Article
    DOI: 10.5194/bg-11-651-2014
    DOI: 10.5194/bg-11-651-2014-supplement
    Language: English
    Publisher: Copernicus GmbH
    Publication Date: 2014
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  • 3
    Online Resource
    Online Resource
    Distinct trends in the speciation of iron between the shallow shelf seas and the deep basins of the Arctic Ocean
    American Geophysical Union (AGU) ; 2011
    In:  Journal of Geophysical Research Vol. 116, No. C10 ( 2011-10-13)
    Details
    In: Journal of Geophysical Research, American Geophysical Union (AGU), Vol. 116, No. C10 ( 2011-10-13)
    Type of Medium: Online Resource
    ISSN: 0148-0227
    URL: Article
    DOI: 10.1029/2010JC006835
    Language: English
    Publisher: American Geophysical Union (AGU)
    Publication Date: 2011
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    detail.hit.zdb_id: 3094197-0
    SSG: 16,13
    Location Call Number Limitation Availability
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  • 4
    Online Resource
    Online Resource
    Deep dissolved iron profiles in the eastern North Atlantic in relation to water masses : DEEP DISSOLVED IRON PROFILES
    American Geophysical Union (AGU) ; 2003
    In:  Geophysical Research Letters Vol. 30, No. 17 ( 2003-09), p. n/a-n/a
    Details
    In: Geophysical Research Letters, American Geophysical Union (AGU), Vol. 30, No. 17 ( 2003-09), p. n/a-n/a
    Type of Medium: Online Resource
    ISSN: 0094-8276
    URL: Article
    DOI: 10.1029/2003GL017902
    Language: English
    Publisher: American Geophysical Union (AGU)
    Publication Date: 2003
    detail.hit.zdb_id: 2021599-X
    detail.hit.zdb_id: 7403-2
    SSG: 16,13
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  • 5
    Online Resource
    Online Resource
    Dissolved iron in the Arctic shelf seas and surface waters of the central Arctic Ocean: Impact of Arctic river water and ice‐melt
    American Geophysical Union (AGU) ; 2012
    In:  Journal of Geophysical Research: Oceans Vol. 117, No. C1 ( 2012-01)
    Details
    In: Journal of Geophysical Research: Oceans, American Geophysical Union (AGU), Vol. 117, No. C1 ( 2012-01)
    Abstract: DFe in the Arctic shelves and surface is linked to fresh water and alkalinity Fluvial input main contributor to high DFe, low alkalinity in central Arctic Remineralization and biological depletion determine DFe in the Arctic shelf seas
    Type of Medium: Online Resource
    ISSN: 0148-0227
    URL: Article
    DOI: 10.1029/2011JC007133
    Language: English
    Publisher: American Geophysical Union (AGU)
    Publication Date: 2012
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    detail.hit.zdb_id: 3094268-8
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    detail.hit.zdb_id: 2016804-4
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    SSG: 16,13
    Location Call Number Limitation Availability
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  • 6
    Online Resource
    Online Resource
    The effects of continental margins and water mass circulation on the distribution of dissolved aluminum and manganese in Drake Passage
    American Geophysical Union (AGU) ; 2012
    In:  Journal of Geophysical Research: Oceans Vol. 117, No. C1 ( 2012-01)
    Details
    In: Journal of Geophysical Research: Oceans, American Geophysical Union (AGU), Vol. 117, No. C1 ( 2012-01)
    Abstract: To asses the aluminum distribution in Drake Passage To asses the manganese distribution in Drake Passage
    Type of Medium: Online Resource
    ISSN: 0148-0227
    URL: Article
    DOI: 10.1029/2011JC007434
    Language: English
    Publisher: American Geophysical Union (AGU)
    Publication Date: 2012
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    detail.hit.zdb_id: 161666-3
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    detail.hit.zdb_id: 161665-1
    detail.hit.zdb_id: 3094268-8
    detail.hit.zdb_id: 710256-2
    detail.hit.zdb_id: 2016804-4
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    detail.hit.zdb_id: 3094167-2
    detail.hit.zdb_id: 2220777-6
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    SSG: 16,13
    Location Call Number Limitation Availability
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  • 7
    Online Resource
    Online Resource
    Dissolved iron in the Arctic Ocean: Important role of hydrothermal sources, shelf input and scavenging removal : DISSOLVED IRON IN THE ARCTIC OCEAN
    American Geophysical Union (AGU) ; 2012
    In:  Journal of Geophysical Research: Oceans Vol. 117, No. C4 ( 2012-04), p. n/a-n/a
    Details
    In: Journal of Geophysical Research: Oceans, American Geophysical Union (AGU), Vol. 117, No. C4 ( 2012-04), p. n/a-n/a
    Type of Medium: Online Resource
    ISSN: 0148-0227
    URL: Article
    DOI: 10.1029/2011JC007135
    Language: English
    Publisher: American Geophysical Union (AGU)
    Publication Date: 2012
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    detail.hit.zdb_id: 3094219-6
    detail.hit.zdb_id: 3094167-2
    detail.hit.zdb_id: 2220777-6
    detail.hit.zdb_id: 3094197-0
    SSG: 16,13
    Location Call Number Limitation Availability
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    Online Resource
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