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Quantifying sediment sources, pathways, and controls on fluvial transport dynamics on James Ross Island, Antarctica.

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Title: Quantifying sediment sources, pathways, and controls on fluvial transport dynamics on James Ross Island, Antarctica.
Authors: Stringer, Christopher D.1 (AUTHOR) gycds@leeds.ac.uk, Boyle, John F.2 (AUTHOR), Hrbáček, Filip3 (AUTHOR), Láska, Kamil3 (AUTHOR), Nedělčev, Ondřej4 (AUTHOR), Kavan, Jan1,5 (AUTHOR), Kňažková, Michaela3 (AUTHOR), Carrivick, Jonathan L.1 (AUTHOR), Quincey, Duncan J.1 (AUTHOR), Nývlt, Daniel3 (AUTHOR)
Source: Journal of Hydrology. May2024, Vol. 635, pN.PAG-N.PAG. 1p.
Subjects: Global warming, Antarctic glaciers, Sediments, Sediment control, Fluvial geomorphology, Glaciers, Atmospheric temperature
Geographic Terms: Antarctica
Abstract: • Sediment load for the Bohemian Stream was 1.18 ± 0.63 t km−2 d−1 over the 50 day study period. • Sediment load for the Algal Stream was 1.73 ± 1.02 t km−2 d−1 in the austral summer of 2021/2022. • Sediment load from the Bohemian catchment is primarily controlled by air temperature. • Algal catchment sediment load appear to be driven by changes in active layer thaw and snow. • Differences between the catchments are primarily due to differing glacier and snowfield coverage. Proglacial regions are enlarging across the Antarctic Peninsula as glaciers recede in a warming climate. However, despite the increasing importance of proglacial regions as sediment sources within cold environments, very few studies have considered fluvial sediment dynamics in polar settings and spatio-temporal variability in sediment delivery to the oceans has yet to be unravelled. In this study, we show how air temperature, precipitation, and ground conditions combine to control sediment loads in two catchments on James Ross Island, Antarctica. We estimate that the sediment load for the Bohemian Stream and Algal Stream over the 50 day study period, the average sediment load was 1.18 ± 0.63 t km−2 d−1 and 1.73 ± 1.02 t km−2 d−1, respectively. Both catchments show some sensitivity to changes in precipitation and air temperature, but the Algal catchment also shows some sensitivity to active layer thaw. The downstream changes in sediment provenance are controlled by underlying lithology, while differences in sediment load peaks between the two catchments appear to be primarily due to differing glacier and snowfield coverage. This identification of the controls on sediment load in this sub-polar environment provides insight into how other fluvial systems across the Antarctic Peninsula could respond as glaciers recede in a warming climate. [ABSTRACT FROM AUTHOR]
Copyright of Journal of Hydrology is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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Header DbId: egs
DbLabel: Engineering Source
An: 177454227
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
PreciseRelevancyScore: 0
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  Data: Quantifying sediment sources, pathways, and controls on fluvial transport dynamics on James Ross Island, Antarctica.
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  Data: <searchLink fieldCode="AR" term="%22Stringer%2C+Christopher+D%2E%22">Stringer, Christopher D.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> gycds@leeds.ac.uk</i><br /><searchLink fieldCode="AR" term="%22Boyle%2C+John+F%2E%22">Boyle, John F.</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Hrbáček%2C+Filip%22">Hrbáček, Filip</searchLink><relatesTo>3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Láska%2C+Kamil%22">Láska, Kamil</searchLink><relatesTo>3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Nedělčev%2C+Ondřej%22">Nedělčev, Ondřej</searchLink><relatesTo>4</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Kavan%2C+Jan%22">Kavan, Jan</searchLink><relatesTo>1,5</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Kňažková%2C+Michaela%22">Kňažková, Michaela</searchLink><relatesTo>3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Carrivick%2C+Jonathan+L%2E%22">Carrivick, Jonathan L.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Quincey%2C+Duncan+J%2E%22">Quincey, Duncan J.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Nývlt%2C+Daniel%22">Nývlt, Daniel</searchLink><relatesTo>3</relatesTo> (AUTHOR)
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  Data: <searchLink fieldCode="DE" term="%22Global+warming%22">Global warming</searchLink><br /><searchLink fieldCode="DE" term="%22Antarctic+glaciers%22">Antarctic glaciers</searchLink><br /><searchLink fieldCode="DE" term="%22Sediments%22">Sediments</searchLink><br /><searchLink fieldCode="DE" term="%22Sediment+control%22">Sediment control</searchLink><br /><searchLink fieldCode="DE" term="%22Fluvial+geomorphology%22">Fluvial geomorphology</searchLink><br /><searchLink fieldCode="DE" term="%22Glaciers%22">Glaciers</searchLink><br /><searchLink fieldCode="DE" term="%22Atmospheric+temperature%22">Atmospheric temperature</searchLink>
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  Data: <searchLink fieldCode="DE" term="%22Antarctica%22">Antarctica</searchLink>
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  Label: Abstract
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  Data: • Sediment load for the Bohemian Stream was 1.18 ± 0.63 t km−2 d−1 over the 50 day study period. • Sediment load for the Algal Stream was 1.73 ± 1.02 t km−2 d−1 in the austral summer of 2021/2022. • Sediment load from the Bohemian catchment is primarily controlled by air temperature. • Algal catchment sediment load appear to be driven by changes in active layer thaw and snow. • Differences between the catchments are primarily due to differing glacier and snowfield coverage. Proglacial regions are enlarging across the Antarctic Peninsula as glaciers recede in a warming climate. However, despite the increasing importance of proglacial regions as sediment sources within cold environments, very few studies have considered fluvial sediment dynamics in polar settings and spatio-temporal variability in sediment delivery to the oceans has yet to be unravelled. In this study, we show how air temperature, precipitation, and ground conditions combine to control sediment loads in two catchments on James Ross Island, Antarctica. We estimate that the sediment load for the Bohemian Stream and Algal Stream over the 50 day study period, the average sediment load was 1.18 ± 0.63 t km−2 d−1 and 1.73 ± 1.02 t km−2 d−1, respectively. Both catchments show some sensitivity to changes in precipitation and air temperature, but the Algal catchment also shows some sensitivity to active layer thaw. The downstream changes in sediment provenance are controlled by underlying lithology, while differences in sediment load peaks between the two catchments appear to be primarily due to differing glacier and snowfield coverage. This identification of the controls on sediment load in this sub-polar environment provides insight into how other fluvial systems across the Antarctic Peninsula could respond as glaciers recede in a warming climate. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
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  Data: <i>Copyright of Journal of Hydrology is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
PLink https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=egs&AN=177454227
RecordInfo BibRecord:
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    Identifiers:
      – Type: doi
        Value: 10.1016/j.jhydrol.2024.131157
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 1
        StartPage: N.PAG
    Subjects:
      – SubjectFull: Global warming
        Type: general
      – SubjectFull: Antarctic glaciers
        Type: general
      – SubjectFull: Sediments
        Type: general
      – SubjectFull: Sediment control
        Type: general
      – SubjectFull: Fluvial geomorphology
        Type: general
      – SubjectFull: Glaciers
        Type: general
      – SubjectFull: Atmospheric temperature
        Type: general
      – SubjectFull: Antarctica
        Type: general
    Titles:
      – TitleFull: Quantifying sediment sources, pathways, and controls on fluvial transport dynamics on James Ross Island, Antarctica.
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            – D: 15
              M: 05
              Text: May2024
              Type: published
              Y: 2024
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              Value: 635
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