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

Polar research

Anne de Vernal¹  Matthias Forwick³  Kirstin Werner⁴  Magdalena Łącka⁵  Joanna Pawłowska⁶  Michael Fritz⁷  Michał Laska⁸  Maija Heikkilä⁸  Mateusz Moskalik⁹  Carolyn Wegner^1,10  Matt O'Regan^1,11  Volker Rachold^1,12  Hugues Lantuit^1,12  Agnieszka Promińska^1,12  Katrina E. Bennett^1,13  Jorien E. Vonk^1,14 

[1] Earth and Environmental SciencesLos Alamos National Laboratory, Los Alamos, NM 87545, USA;Byrd Polar and Climate Research Centre, Ohio State University, Columbus, OH 43210, USA;Centre GEOTOP, Université du Québec à Montréal, CP 8888, Montréal, Quebec, Canada H3C 3P8;Department of Earth SciencesUtrecht University, 3584 CD Utrecht, The Netherlands;Department of Environmental SciencesECRU, University of Helsinki, FI-00014 Helsinki, Finland;Department of Geological SciencesBolin Centre, Stockholm University, SE-106 91 Stockholm, Sweden;Department of GeologyUniversity of Tromsø, PO Box 6050 Langnes, NO-9037 Tromsø, Norway;Department of Periglacial ResearchAlfred Wegener Institute Helmholtz Centre for Polar and Marine Research, Postfach 60 01 49, DE-14473 Potsdam, Germany;Faculty of Earth SciencesUniversity of Silesia, 60 Bedzinska, PL-41-200 Sosnowiec, Poland;GEOMAR Helmholtz Centre for Ocean Research, Wischhofstr. 1-3, DE-24148 Kiel, GermanyCorrespondence;Institute of Geophysics Polish Academy of Sciences, Centre for Polar Studies KNOW, ul. Księcia Janusza 64, PL-01-452 Warsaw, Poland;Institute of Oceanology Polish Academy of SciencesPowstanóców Warszawy 55, PL-81-712 Sopot, Poland;International Arctic Research CentreUniversity of Alaska Fairbanks, 930 Koyukuk Drive, Fairbanks, AK 99775-7340, USA;International Arctic Science CommitteeTelegrafenberg A43, DE-14473 Potsdam, Germany

关键词: Arctic;    riverine input;    coastal erosion;    land–ocean interaction;    Holocene;   

DOI  :  10.3402/polar.v34.24964

学科分类：自然科学（综合）

来源: Co-Action Publishing

【 摘 要 】

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 du...

【 授权许可】

CC BY-NC