Atlantic Water advection vs. glacier dynamics in northern Spitsbergen since early deglaciation
Atlantic Water (AW) advection plays an important role in climatic, oceanographic and environmental conditions in the eastern 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...
Main Authors: | , , , , , , |
---|---|
Language: | English |
Published: |
2017
|
Subjects: | |
Online Access: | https://repository.publisso.de/resource/frl:6408374 https://doi.org/10.5194/cp-13-1717-2017 https://doi.org/10.1594/PANGAEA.882243 |
id |
ftleibnizopen:oai:oai.leibnizopen.de:9TeEYIgBdbrxVwz6Sr6_ |
---|---|
record_format |
openpolar |
spelling |
ftleibnizopen:oai:oai.leibnizopen.de:9TeEYIgBdbrxVwz6Sr6_ 2023-06-11T04:09:18+02:00 Atlantic Water advection vs. glacier dynamics in northern Spitsbergen since early deglaciation Bartels, Martin Titschack, Jürgen Fahl, Kirsten Stein, Rüdiger Seidenkrantz, Marit-Solveig Hillaire-Marcel, Claude Hebbeln, Dierk 2017 https://repository.publisso.de/resource/frl:6408374 https://doi.org/10.5194/cp-13-1717-2017 https://doi.org/10.1594/PANGAEA.882243 eng eng http://creativecommons.org/licenses/by/3.0/ Climate of the past, 13(12):1717-1749 2017 ftleibnizopen https://doi.org/10.5194/cp-13-1717-201710.1594/PANGAEA.882243 2023-05-28T23:07:52Z Atlantic Water (AW) advection plays an important role in climatic, oceanographic and environmental conditions in the eastern 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, as illustrated in the present study of a 275 cm long sedimentary record from Woodfjorden (northern Spitsbergen; water depth: 171 m) spanning the last ∼ 15 500 years. Sedimentological, micropalaeontological and geochemical analyses were used to reconstruct changes in marine environmental conditions, sea ice cover and glacier activity. Data illustrate a partial break-up of the Svalbard–Barents Sea Ice Sheet from Heinrich Stadial 1 onwards (until ∼ 14.6 ka). During the Bølling–Allerød ( ∼ 14.6–12.7 ka), AW penetrated as a bottom water mass into the fjord system and contributed significantly to the destabilization of local glaciers. During the Younger Dryas ( ∼ 12.7–11.7 ka), it intruded into intermediate waters while evidence for a glacier advance is lacking. A short-term deepening of the halocline occurred at the very end of this interval. During the early Holocene ( ∼ 11.7–7.8 ka), mild conditions led to glacier retreat, a reduced sea ice cover and increasing sea surface temperatures, with a brief interruption during the Preboreal Oscillation ( ∼ 11.1–10.8 ka). Due to a ∼ 6000-year gap, the mid-Holocene is not recorded in this sediment core. During the late Holocene ( ∼ 1.8–0.4 ka), a slightly reduced AW inflow and lower sea surface temperatures compared to the early Holocene are reconstructed. Glaciers, which previously retreated to the shallower inner parts of the Woodfjorden system, likely advanced during the late Holocene. In particular, topographic control in concert with the reduced summer insolation partly decoupled glacier dynamics from AW advection during this recent interval. Other/Unknown Material Arctic Barents Sea glacier Ice Sheet Sea ice Svalbard Svalbard-Barents Sea Ice sheet Woodfjord* Woodfjorden Spitsbergen LeibnizOpen (The Leibniz Association) Arctic Barents Sea Svalbard Svalbard Archipelago Woodfjorden ENVELOPE(14.000,14.000,79.833,79.833) |
institution |
Open Polar |
collection |
LeibnizOpen (The Leibniz Association) |
op_collection_id |
ftleibnizopen |
language |
English |
description |
Atlantic Water (AW) advection plays an important role in climatic, oceanographic and environmental conditions in the eastern 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, as illustrated in the present study of a 275 cm long sedimentary record from Woodfjorden (northern Spitsbergen; water depth: 171 m) spanning the last ∼ 15 500 years. Sedimentological, micropalaeontological and geochemical analyses were used to reconstruct changes in marine environmental conditions, sea ice cover and glacier activity. Data illustrate a partial break-up of the Svalbard–Barents Sea Ice Sheet from Heinrich Stadial 1 onwards (until ∼ 14.6 ka). During the Bølling–Allerød ( ∼ 14.6–12.7 ka), AW penetrated as a bottom water mass into the fjord system and contributed significantly to the destabilization of local glaciers. During the Younger Dryas ( ∼ 12.7–11.7 ka), it intruded into intermediate waters while evidence for a glacier advance is lacking. A short-term deepening of the halocline occurred at the very end of this interval. During the early Holocene ( ∼ 11.7–7.8 ka), mild conditions led to glacier retreat, a reduced sea ice cover and increasing sea surface temperatures, with a brief interruption during the Preboreal Oscillation ( ∼ 11.1–10.8 ka). Due to a ∼ 6000-year gap, the mid-Holocene is not recorded in this sediment core. During the late Holocene ( ∼ 1.8–0.4 ka), a slightly reduced AW inflow and lower sea surface temperatures compared to the early Holocene are reconstructed. Glaciers, which previously retreated to the shallower inner parts of the Woodfjorden system, likely advanced during the late Holocene. In particular, topographic control in concert with the reduced summer insolation partly decoupled glacier dynamics from AW advection during this recent interval. |
author |
Bartels, Martin Titschack, Jürgen Fahl, Kirsten Stein, Rüdiger Seidenkrantz, Marit-Solveig Hillaire-Marcel, Claude Hebbeln, Dierk |
spellingShingle |
Bartels, Martin Titschack, Jürgen Fahl, Kirsten Stein, Rüdiger Seidenkrantz, Marit-Solveig Hillaire-Marcel, Claude Hebbeln, Dierk Atlantic Water advection vs. glacier dynamics in northern Spitsbergen since early deglaciation |
author_facet |
Bartels, Martin Titschack, Jürgen Fahl, Kirsten Stein, Rüdiger Seidenkrantz, Marit-Solveig Hillaire-Marcel, Claude Hebbeln, Dierk |
author_sort |
Bartels, Martin |
title |
Atlantic Water advection vs. glacier dynamics in northern Spitsbergen since early deglaciation |
title_short |
Atlantic Water advection vs. glacier dynamics in northern Spitsbergen since early deglaciation |
title_full |
Atlantic Water advection vs. glacier dynamics in northern Spitsbergen since early deglaciation |
title_fullStr |
Atlantic Water advection vs. glacier dynamics in northern Spitsbergen since early deglaciation |
title_full_unstemmed |
Atlantic Water advection vs. glacier dynamics in northern Spitsbergen since early deglaciation |
title_sort |
atlantic water advection vs. glacier dynamics in northern spitsbergen since early deglaciation |
publishDate |
2017 |
url |
https://repository.publisso.de/resource/frl:6408374 https://doi.org/10.5194/cp-13-1717-2017 https://doi.org/10.1594/PANGAEA.882243 |
long_lat |
ENVELOPE(14.000,14.000,79.833,79.833) |
geographic |
Arctic Barents Sea Svalbard Svalbard Archipelago Woodfjorden |
geographic_facet |
Arctic Barents Sea Svalbard Svalbard Archipelago Woodfjorden |
genre |
Arctic Barents Sea glacier Ice Sheet Sea ice Svalbard Svalbard-Barents Sea Ice sheet Woodfjord* Woodfjorden Spitsbergen |
genre_facet |
Arctic Barents Sea glacier Ice Sheet Sea ice Svalbard Svalbard-Barents Sea Ice sheet Woodfjord* Woodfjorden Spitsbergen |
op_source |
Climate of the past, 13(12):1717-1749 |
op_rights |
http://creativecommons.org/licenses/by/3.0/ |
op_doi |
https://doi.org/10.5194/cp-13-1717-201710.1594/PANGAEA.882243 |
_version_ |
1768383093333295104 |