Mean sand flux in cores ER11, ER07 and ER13, Sermilik Fjord, Greenland
During the early 2000s the Greenland Ice Sheet experienced the largest ice-mass loss of the instrumental record, largely as a result of the acceleration, thinning and retreat of large outlet glaciers in West and southeast Greenland. The quasi-simultaneous change in the glaciers suggests a common cli...
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ftdatacite:10.1594/pangaea.786791 2023-05-15T16:03:50+02:00 Mean sand flux in cores ER11, ER07 and ER13, Sermilik Fjord, Greenland Andresen, Camilla S 2012 text/tab-separated-values https://dx.doi.org/10.1594/pangaea.786791 https://doi.pangaea.de/10.1594/PANGAEA.786791 en eng PANGAEA - Data Publisher for Earth & Environmental Science https://dx.doi.org/10.1038/ngeo1349 Creative Commons Attribution 3.0 Unported https://creativecommons.org/licenses/by/3.0/legalcode cc-by-3.0 CC-BY Year of deposition Sand, flux, mean, per year High resolution, low background gamma spectroscopy HPGe detector, Canberra Inc. Grain size, Mastersizer 2000, Malvern Instrument Inc. Climate Change Learning from the past climate Past4Future Dataset dataset 2012 ftdatacite https://doi.org/10.1594/pangaea.786791 https://doi.org/10.1038/ngeo1349 2022-02-09T13:54:01Z During the early 2000s the Greenland Ice Sheet experienced the largest ice-mass loss of the instrumental record, largely as a result of the acceleration, thinning and retreat of large outlet glaciers in West and southeast Greenland. The quasi-simultaneous change in the glaciers suggests a common climate forcing. Increasing air and ocean temperatures have been indicated as potential triggers. Here, we present a record of calving activity of Helheim Glacier, East Greenland, that extends back to about AD 1890, based on an analysis of sedimentary deposits from Sermilik Fjord, where Helheim Glacier terminates. Specifically, we use the annual deposition of and grains as a proxy for iceberg discharge. Our record reveals large fluctuations in calving rates, but the present high rate was reproduced only in the 1930s. A comparison with climate indices indicates that high calving activity coincides with a relatively strong influence of Atlantic water and a lower influence of polar water on the shelf off Greenland, as well as with warm summers and the negative phase of the North Atlantic Oscillation. Our analysis provides evidence that Helheim Glacier responds to short-term fluctuations of large-scale oceanic and atmospheric conditions, on timescales of 3-10 years. Dataset East Greenland glacier Greenland Ice Sheet North Atlantic North Atlantic oscillation Sermilik DataCite Metadata Store (German National Library of Science and Technology) Greenland |
institution |
Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
English |
topic |
Year of deposition Sand, flux, mean, per year High resolution, low background gamma spectroscopy HPGe detector, Canberra Inc. Grain size, Mastersizer 2000, Malvern Instrument Inc. Climate Change Learning from the past climate Past4Future |
spellingShingle |
Year of deposition Sand, flux, mean, per year High resolution, low background gamma spectroscopy HPGe detector, Canberra Inc. Grain size, Mastersizer 2000, Malvern Instrument Inc. Climate Change Learning from the past climate Past4Future Andresen, Camilla S Mean sand flux in cores ER11, ER07 and ER13, Sermilik Fjord, Greenland |
topic_facet |
Year of deposition Sand, flux, mean, per year High resolution, low background gamma spectroscopy HPGe detector, Canberra Inc. Grain size, Mastersizer 2000, Malvern Instrument Inc. Climate Change Learning from the past climate Past4Future |
description |
During the early 2000s the Greenland Ice Sheet experienced the largest ice-mass loss of the instrumental record, largely as a result of the acceleration, thinning and retreat of large outlet glaciers in West and southeast Greenland. The quasi-simultaneous change in the glaciers suggests a common climate forcing. Increasing air and ocean temperatures have been indicated as potential triggers. Here, we present a record of calving activity of Helheim Glacier, East Greenland, that extends back to about AD 1890, based on an analysis of sedimentary deposits from Sermilik Fjord, where Helheim Glacier terminates. Specifically, we use the annual deposition of and grains as a proxy for iceberg discharge. Our record reveals large fluctuations in calving rates, but the present high rate was reproduced only in the 1930s. A comparison with climate indices indicates that high calving activity coincides with a relatively strong influence of Atlantic water and a lower influence of polar water on the shelf off Greenland, as well as with warm summers and the negative phase of the North Atlantic Oscillation. Our analysis provides evidence that Helheim Glacier responds to short-term fluctuations of large-scale oceanic and atmospheric conditions, on timescales of 3-10 years. |
format |
Dataset |
author |
Andresen, Camilla S |
author_facet |
Andresen, Camilla S |
author_sort |
Andresen, Camilla S |
title |
Mean sand flux in cores ER11, ER07 and ER13, Sermilik Fjord, Greenland |
title_short |
Mean sand flux in cores ER11, ER07 and ER13, Sermilik Fjord, Greenland |
title_full |
Mean sand flux in cores ER11, ER07 and ER13, Sermilik Fjord, Greenland |
title_fullStr |
Mean sand flux in cores ER11, ER07 and ER13, Sermilik Fjord, Greenland |
title_full_unstemmed |
Mean sand flux in cores ER11, ER07 and ER13, Sermilik Fjord, Greenland |
title_sort |
mean sand flux in cores er11, er07 and er13, sermilik fjord, greenland |
publisher |
PANGAEA - Data Publisher for Earth & Environmental Science |
publishDate |
2012 |
url |
https://dx.doi.org/10.1594/pangaea.786791 https://doi.pangaea.de/10.1594/PANGAEA.786791 |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
East Greenland glacier Greenland Ice Sheet North Atlantic North Atlantic oscillation Sermilik |
genre_facet |
East Greenland glacier Greenland Ice Sheet North Atlantic North Atlantic oscillation Sermilik |
op_relation |
https://dx.doi.org/10.1038/ngeo1349 |
op_rights |
Creative Commons Attribution 3.0 Unported https://creativecommons.org/licenses/by/3.0/legalcode cc-by-3.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1594/pangaea.786791 https://doi.org/10.1038/ngeo1349 |
_version_ |
1766399523545939968 |