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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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.786791 2024-05-19T07:39:37+00:00 Mean sand flux in cores ER11, ER07 and ER13, Sermilik Fjord, Greenland Andresen, Camilla S LATITUDE: 66.012700 * LONGITUDE: -37.860400 * MINIMUM ELEVATION: -595.0 m * MAXIMUM ELEVATION: -595.0 m 2012 text/tab-separated-values, 196 data points https://doi.pangaea.de/10.1594/PANGAEA.786791 https://doi.org/10.1594/PANGAEA.786791 en eng PANGAEA Andresen, Camilla S; Straneo, Fiammetta; Ribergaard, Mads Hvid; Andersen, Thorbjørn Joest; Kuijpers, Antoon; Nørgaard-Pedersen, Niels; Kjær, Kurt Henrik; Schjøth, Frands; Weckström, Kaarina; Ahlstrøm, Andreas P (2012): Rapid response of Helheim Glacier in Greenland to climate variability over the past century. Nature Geoscience, 5, 37-41, https://doi.org/10.1038/ngeo1349 https://doi.pangaea.de/10.1594/PANGAEA.786791 https://doi.org/10.1594/PANGAEA.786791 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess Climate Change: Learning from the past climate Grain size Mastersizer 2000 Malvern Instrument Inc. Helheim_Glacier_sandflux High resolution low background gamma spectroscopy (HPGe detector Canberra Inc.) Past4Future Sand flux mean per year Sermilik Fjord SE Greenland Year of deposition Dataset 2012 ftpangaea https://doi.org/10.1594/PANGAEA.78679110.1038/ngeo1349 2024-04-30T23:34:34Z 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 PANGAEA - Data Publisher for Earth & Environmental Science ENVELOPE(-37.860400,-37.860400,66.012700,66.012700) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
Climate Change: Learning from the past climate Grain size Mastersizer 2000 Malvern Instrument Inc. Helheim_Glacier_sandflux High resolution low background gamma spectroscopy (HPGe detector Canberra Inc.) Past4Future Sand flux mean per year Sermilik Fjord SE Greenland Year of deposition |
spellingShingle |
Climate Change: Learning from the past climate Grain size Mastersizer 2000 Malvern Instrument Inc. Helheim_Glacier_sandflux High resolution low background gamma spectroscopy (HPGe detector Canberra Inc.) Past4Future Sand flux mean per year Sermilik Fjord SE Greenland Year of deposition Andresen, Camilla S Mean sand flux in cores ER11, ER07 and ER13, Sermilik Fjord, Greenland |
topic_facet |
Climate Change: Learning from the past climate Grain size Mastersizer 2000 Malvern Instrument Inc. Helheim_Glacier_sandflux High resolution low background gamma spectroscopy (HPGe detector Canberra Inc.) Past4Future Sand flux mean per year Sermilik Fjord SE Greenland Year of deposition |
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 |
publishDate |
2012 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.786791 https://doi.org/10.1594/PANGAEA.786791 |
op_coverage |
LATITUDE: 66.012700 * LONGITUDE: -37.860400 * MINIMUM ELEVATION: -595.0 m * MAXIMUM ELEVATION: -595.0 m |
long_lat |
ENVELOPE(-37.860400,-37.860400,66.012700,66.012700) |
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 |
Andresen, Camilla S; Straneo, Fiammetta; Ribergaard, Mads Hvid; Andersen, Thorbjørn Joest; Kuijpers, Antoon; Nørgaard-Pedersen, Niels; Kjær, Kurt Henrik; Schjøth, Frands; Weckström, Kaarina; Ahlstrøm, Andreas P (2012): Rapid response of Helheim Glacier in Greenland to climate variability over the past century. Nature Geoscience, 5, 37-41, https://doi.org/10.1038/ngeo1349 https://doi.pangaea.de/10.1594/PANGAEA.786791 https://doi.org/10.1594/PANGAEA.786791 |
op_rights |
CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1594/PANGAEA.78679110.1038/ngeo1349 |
_version_ |
1799479190719823872 |