Geochemical biomarker analyses on sediment cores MSM05/03_343310-5-1 and MSM05/03_343310-2-2 from Disko Bugt, West Greenland
Past sea ice conditions and open water phytoplankton production were reconstructed from a sediment core taken in Disko Bugt, West Greenland, using the sea ice biomarker IP~25~ and other specific phytoplankton biomarker (i.e., brassicasterol, dinosterol, HBI III) records. Our biomarker record indicat...
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Online Access: | https://doi.pangaea.de/10.1594/PANGAEA.885107 https://doi.org/10.1594/PANGAEA.885107 |
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.885107 2023-05-15T14:25:54+02:00 Geochemical biomarker analyses on sediment cores MSM05/03_343310-5-1 and MSM05/03_343310-2-2 from Disko Bugt, West Greenland Kolling, Henriette Marie Stein, Ruediger Fahl, Kirsten Perner, Kerstin Moros, Matthias MEDIAN LATITUDE: 68.647750 * MEDIAN LONGITUDE: -53.824825 * SOUTH-BOUND LATITUDE: 68.647680 * WEST-BOUND LONGITUDE: -53.824880 * NORTH-BOUND LATITUDE: 68.647820 * EAST-BOUND LONGITUDE: -53.824770 2018-01-17 application/zip, 2 datasets https://doi.pangaea.de/10.1594/PANGAEA.885107 https://doi.org/10.1594/PANGAEA.885107 en eng PANGAEA Kolling, Henriette Marie; Stein, Ruediger; Fahl, Kirsten; Perner, Kerstin; Moros, Matthias (2018): New insights into sea ice changes over the past 2.2 kyr in Disko Bugt, West Greenland. arktos - The Journal of Arctic Geosciences, 4(1), https://doi.org/10.1007/s41063-018-0045-z https://doi.pangaea.de/10.1594/PANGAEA.885107 https://doi.org/10.1594/PANGAEA.885107 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY AWI_Paleo Paleoenvironmental Reconstructions from Marine Sediments @ AWI Dataset 2018 ftpangaea https://doi.org/10.1594/PANGAEA.885107 https://doi.org/10.1007/s41063-018-0045-z 2023-01-20T07:34:06Z Past sea ice conditions and open water phytoplankton production were reconstructed from a sediment core taken in Disko Bugt, West Greenland, using the sea ice biomarker IP~25~ and other specific phytoplankton biomarker (i.e., brassicasterol, dinosterol, HBI III) records. Our biomarker record indicates that Disko Bugt experienced a gradual expansion of seasonal sea ice during the last 2.2 kyr. Maximum sea ice extent was reached during the Little Ice Age around 0.2 kyr BP. Superimposed on this longer term trend, we find short-term oscillations in open water primary production and terrigenous input, which may be related to the Atlantic Multidecadal Oscillation and solar activity changes as potential climatic trigger mechanisms. A direct sample-to-sample multiproxy comparison of our new biomarker record with microfossil (i.e., benthic foraminifera, dinocysts, and diatoms) and other geochemical records (i.e., alkenone biomarkers) indicates that different proxies are influenced by the complex environmental system with pronounced seasonal changes and strong oceanographic gradients, e.g., freshwater inflow from the Greenland Ice Sheet. Differences in sea ice reconstructions may indicate that the IP~25~ record reflects only the relatively short sea ice season (spring), whereas other microfossil reconstructions may reflect a longer (spring–autumn) interval. Dataset Arctic Disko bugt Greenland Ice Sheet Sea ice PANGAEA - Data Publisher for Earth & Environmental Science Greenland ENVELOPE(-53.824880,-53.824770,68.647820,68.647680) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
AWI_Paleo Paleoenvironmental Reconstructions from Marine Sediments @ AWI |
spellingShingle |
AWI_Paleo Paleoenvironmental Reconstructions from Marine Sediments @ AWI Kolling, Henriette Marie Stein, Ruediger Fahl, Kirsten Perner, Kerstin Moros, Matthias Geochemical biomarker analyses on sediment cores MSM05/03_343310-5-1 and MSM05/03_343310-2-2 from Disko Bugt, West Greenland |
topic_facet |
AWI_Paleo Paleoenvironmental Reconstructions from Marine Sediments @ AWI |
description |
Past sea ice conditions and open water phytoplankton production were reconstructed from a sediment core taken in Disko Bugt, West Greenland, using the sea ice biomarker IP~25~ and other specific phytoplankton biomarker (i.e., brassicasterol, dinosterol, HBI III) records. Our biomarker record indicates that Disko Bugt experienced a gradual expansion of seasonal sea ice during the last 2.2 kyr. Maximum sea ice extent was reached during the Little Ice Age around 0.2 kyr BP. Superimposed on this longer term trend, we find short-term oscillations in open water primary production and terrigenous input, which may be related to the Atlantic Multidecadal Oscillation and solar activity changes as potential climatic trigger mechanisms. A direct sample-to-sample multiproxy comparison of our new biomarker record with microfossil (i.e., benthic foraminifera, dinocysts, and diatoms) and other geochemical records (i.e., alkenone biomarkers) indicates that different proxies are influenced by the complex environmental system with pronounced seasonal changes and strong oceanographic gradients, e.g., freshwater inflow from the Greenland Ice Sheet. Differences in sea ice reconstructions may indicate that the IP~25~ record reflects only the relatively short sea ice season (spring), whereas other microfossil reconstructions may reflect a longer (spring–autumn) interval. |
format |
Dataset |
author |
Kolling, Henriette Marie Stein, Ruediger Fahl, Kirsten Perner, Kerstin Moros, Matthias |
author_facet |
Kolling, Henriette Marie Stein, Ruediger Fahl, Kirsten Perner, Kerstin Moros, Matthias |
author_sort |
Kolling, Henriette Marie |
title |
Geochemical biomarker analyses on sediment cores MSM05/03_343310-5-1 and MSM05/03_343310-2-2 from Disko Bugt, West Greenland |
title_short |
Geochemical biomarker analyses on sediment cores MSM05/03_343310-5-1 and MSM05/03_343310-2-2 from Disko Bugt, West Greenland |
title_full |
Geochemical biomarker analyses on sediment cores MSM05/03_343310-5-1 and MSM05/03_343310-2-2 from Disko Bugt, West Greenland |
title_fullStr |
Geochemical biomarker analyses on sediment cores MSM05/03_343310-5-1 and MSM05/03_343310-2-2 from Disko Bugt, West Greenland |
title_full_unstemmed |
Geochemical biomarker analyses on sediment cores MSM05/03_343310-5-1 and MSM05/03_343310-2-2 from Disko Bugt, West Greenland |
title_sort |
geochemical biomarker analyses on sediment cores msm05/03_343310-5-1 and msm05/03_343310-2-2 from disko bugt, west greenland |
publisher |
PANGAEA |
publishDate |
2018 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.885107 https://doi.org/10.1594/PANGAEA.885107 |
op_coverage |
MEDIAN LATITUDE: 68.647750 * MEDIAN LONGITUDE: -53.824825 * SOUTH-BOUND LATITUDE: 68.647680 * WEST-BOUND LONGITUDE: -53.824880 * NORTH-BOUND LATITUDE: 68.647820 * EAST-BOUND LONGITUDE: -53.824770 |
long_lat |
ENVELOPE(-53.824880,-53.824770,68.647820,68.647680) |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Arctic Disko bugt Greenland Ice Sheet Sea ice |
genre_facet |
Arctic Disko bugt Greenland Ice Sheet Sea ice |
op_relation |
Kolling, Henriette Marie; Stein, Ruediger; Fahl, Kirsten; Perner, Kerstin; Moros, Matthias (2018): New insights into sea ice changes over the past 2.2 kyr in Disko Bugt, West Greenland. arktos - The Journal of Arctic Geosciences, 4(1), https://doi.org/10.1007/s41063-018-0045-z https://doi.pangaea.de/10.1594/PANGAEA.885107 https://doi.org/10.1594/PANGAEA.885107 |
op_rights |
CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1594/PANGAEA.885107 https://doi.org/10.1007/s41063-018-0045-z |
_version_ |
1766298381124108288 |