Atlantic Water advection and glacier responses at the margins of Svalbard since the deglaciation

Atlantic Water (AW) advection plays an important role in climatic, oceanographic and environmental conditions in the Arctic. Situated along the only deep connection between the Atlantic and the Arctic oceans, the Svalbard Archipelago is an ideal location to reconstruct the past AW advection history...

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Bibliographic Details
Main Author: Bartels, Martin
Other Authors: Hebbeln, Dierk, Schmiedl, Gerhard
Format: Doctoral or Postdoctoral Thesis
Language:English
Published: Universität Bremen 2017
Subjects:
Svalbard
Atlantic Water
deglaciation
Holocene
palaeoceanography
benthic foraminifera
IRD
high latitude fjords
Arctic
glacier
550
550 Earth sciences and geology
ddc:550
Svalbard Archipelago
Foraminifera*
Ice Sheet
Online Access:https://media.suub.uni-bremen.de/handle/elib/1361
https://nbn-resolving.org/urn:nbn:de:gbv:46-00106355-14
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Summary:Atlantic Water (AW) advection plays an important role in climatic, oceanographic and environmental conditions in the Arctic. Situated along the only deep connection between the Atlantic and the Arctic oceans, the Svalbard Archipelago is an ideal location to reconstruct the past AW advection history and document its linkage with local glacier dynamics. In the framework of this thesis, three sediment cores from the northern margins of Svalbard were chosen covering up to 15,500 years. Multi-proxy based reconstructions (applying benthic foraminiferal assemblages, sediment properties and geochemical tracers) revealed a rapid retreat of the ice sheet covering Svalbard during the deglaciation, closely connected to AW inflow. While conditions during the early Holocene were warmer than today when AW caused open waters and retreated glaciers, Arctic Water gained influence at the transition to the mid-Holocene, whereas glaciers re-advanced during the late Holocene.

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