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Title: Variability in transport of terrigenous material on the shelves and the deep Arctic Ocean during the Holocene
Authors: Wegner, Carolyn
Bennett, Katrina E.
de Vernal, Anne
Forwick, Matthias
Fritz, Michael
Heikkila, Maija
Łącka, Magdalena
Lantuit, Hugues
Laska, Michał
Moskalik, Mateusz
O'Rega, Matt
Pawłowska, Joanna
Promińska, Agnieszka
Rachold, Volker
Vonk, Jorien E.
Werner, Kirstin
Keywords: Arctic; Riverine input
Issue Date: 2015
Citation: "Polar Research " Vol. 34, (2015), s. 1-19
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 palaeoceanographic 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, as a result of 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, which suggests 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.
DOI: 10.3402/polar.v34.24964
ISSN: 0800-0395
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