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

Show full item record



Permalink

http://hdl.handle.net/10138/162044

Citation

Wegner , C , Bennett , K E , de Vernal , A , Forwick , M , Fritz , M , Heikkilä , M , Lacka , M , Lantuit , H , Laska , M , Moskalik , M , O'Regan , M , Pawlowska , J , Prominska , A , Rachold , V , Vonk , J E & Werner , K 2015 , ' Variability in transport of terrigenous material on the shelves and the deep Arctic Ocean during the Holocene ' Polar Research , vol. 34 , 24964 . DOI: 10.3402/polar.v34.24964

Title: Variability in transport of terrigenous material on the shelves and the deep Arctic Ocean during the Holocene
Author: Wegner, Carolyn; Bennett, Katrina E.; de Vernal, Anne; Forwick, Matthias; Fritz, Michael; Heikkilä, Maija; Lacka, Magdalena; Lantuit, Hugues; Laska, Michal; Moskalik, Mateusz; O'Regan, Matt; Pawlowska, Joanna; Prominska, Agnieszka; Rachold, Volker; Vonk, Jorien E.; Werner, Kirstin
Contributor: University of Helsinki, En­vir­on­mental Change Research Unit (ECRU)
Date: 2015
Language: eng
Number of pages: 19
Belongs to series: Polar Research
ISSN: 0800-0395
URI: http://hdl.handle.net/10138/162044
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.
Subject: Arctic
riverine input
coastal erosion
land-ocean interaction
Holocene
LAPTEV SEA SHELF
FLUVIAL SEDIMENT FLUX
LAST GLACIAL MAXIMUM
ICE-SHEET HISTORY
RIVER DISCHARGE
ORGANIC-CARBON
KARA SEA
LATE QUATERNARY
BEAUFORT SEA
YOUNGER DRYAS
1172 Environmental sciences
Rights:


Files in this item

Total number of downloads: Loading...

Files Size Format View
24964_182460_1_PB.pdf 4.143Mb PDF View/Open

This item appears in the following Collection(s)

Show full item record