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      Variability in transport of terrigenous material on the shelves and the deep Arctic Ocean during the Holocene

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      General Information:

      Citation:
      Wegner, C. , Bennett, K. E. , de Vernal, A. , Forwick, M. , Fritz, M. , Heikkilä, M. , Łącka, M. , Lantuit, H. , Laska, M. , Moskalik, M. , O´Regan, M. , Pawłowska, J. , Promińska, A. , Rachold, V. , Vonk, J. E. and Werner, K. (2015): Variability in transport of terrigenous material on the shelves and the deep Arctic Ocean during the Holocene , Polar Research, 34 , p. 24964 . doi: 10.3402/polar.v34.24964
      Cite this page as:
      hdl:10013/epic.46478
      DOI:
      https://doi.org/10.3402/polar.v34.24964
      Contact Email:
      Michael.Fritz@awi.de
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      Cite this document as:
      hdl:10013/epic.46478.d001
      Abstract:

      Arctic coastal zones serve as a sensitive filter for terrigenous matter input onto the shelves via river discharge and coastal erosion. This material is further distributed across the Arctic by ocean currents and sea ice. The coastal regions are particularly vulnerable to changes related to recent climate change. We compiled a pan-arctic review that looks into the changing Holocene sources, transport processes and sinks of terrigenous sediment in the Arctic Ocean. Existing paleoceanographic studies demonstrate how climate warming and the disappearance of ice sheets during the early Holocene initiated eustatic sea-level rise that greatly modified the physiography of the Arctic Ocean. Sedimentation rates over the shelves and slopes were much greater during periods of rapid sea-level rise in the early and middle Holocene, due to the relative distance to the terrestrial sediment sources. However, estimates of suspended sediment delivery through major Arctic rivers do not indicate enhanced delivery during this time, thus, suggesting enhanced rates of coastal erosion. The increased supply of terrigenous material to the outer shelves and deep Arctic Ocean in the early and middle Holocene might serve as analogous to forecast changes in the future Arctic.

      Further Details:

      Item Type:
      Article
      Authors:
      Wegner, Carolyn ; Bennett, K. E. ; de Vernal, Anne ; Forwick, Matthias ; Fritz, Michael ; Heikkilä, M. ; Łącka, M. ; Lantuit, Hugues ; Laska, M. ; Moskalik, M. ; O´Regan, M. ; Pawłowska, J. ; Promińska, A. ; Rachold, Volker ; Vonk, J. E. ; Werner, Kirstin
      Divisions:
      AWI Organizations > Geosciences > Permafrost Research
      AWI Organizations > Geosciences > Junior Research Group: COPER
      Primary Division:
      Organizations > AWI Organizations > Geosciences > Junior Research Group: COPER
      Programs:
      Helmholtz Research Programs > PACES II (2014-2018) > TOPIC 1: Changes and regional feedbacks in Arctic and Antarctic > WP 1.3: Degrading permafrost landscapes; carbon, energy and water fluxes
      Helmholtz Research Programs > PACES II (2014-2018) > TOPIC 3: The earth system from a polar perspective > WP 3.1: Circumpolar climate variability and global teleconnections at seasonal to orbital time scales
      Primary Topic:
      Helmholtz Programs > Helmholtz Research Programs > PACES II (2014-2018) > TOPIC 1: Changes and regional feedbacks in Arctic and Antarctic > WP 1.3: Degrading permafrost landscapes; carbon, energy and water fluxes
      Eprint ID:
      39220
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