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...
Published in: | Climate of the Past |
---|---|
Main Authors: | , , , , , , |
Format: | Text |
Language: | English |
Published: |
2018
|
Subjects: | |
Online Access: | https://doi.org/10.5194/cp-13-1717-2017 https://cp.copernicus.org/articles/13/1717/2017/ |
id |
ftcopernicus:oai:publications.copernicus.org:cp58129 |
---|---|
record_format |
openpolar |
spelling |
ftcopernicus:oai:publications.copernicus.org:cp58129 2023-05-15T15:00:46+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 2018-09-27 application/pdf https://doi.org/10.5194/cp-13-1717-2017 https://cp.copernicus.org/articles/13/1717/2017/ eng eng doi:10.5194/cp-13-1717-2017 https://cp.copernicus.org/articles/13/1717/2017/ eISSN: 1814-9332 Text 2018 ftcopernicus https://doi.org/10.5194/cp-13-1717-2017 2020-07-20T16:23:32Z 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. Text Arctic Barents Sea glacier Ice Sheet Sea ice Svalbard Svalbard-Barents Sea Ice sheet Woodfjord* Woodfjorden Spitsbergen Copernicus Publications: E-Journals Arctic Barents Sea Svalbard Svalbard Archipelago Woodfjorden ENVELOPE(14.000,14.000,79.833,79.833) Climate of the Past 13 12 1717 1749 |
institution |
Open Polar |
collection |
Copernicus Publications: E-Journals |
op_collection_id |
ftcopernicus |
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. |
format |
Text |
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 |
2018 |
url |
https://doi.org/10.5194/cp-13-1717-2017 https://cp.copernicus.org/articles/13/1717/2017/ |
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 |
eISSN: 1814-9332 |
op_relation |
doi:10.5194/cp-13-1717-2017 https://cp.copernicus.org/articles/13/1717/2017/ |
op_doi |
https://doi.org/10.5194/cp-13-1717-2017 |
container_title |
Climate of the Past |
container_volume |
13 |
container_issue |
12 |
container_start_page |
1717 |
op_container_end_page |
1749 |
_version_ |
1766332835667378176 |