Accumulation rates during 1311-2011 CE in North Central Greenland derived from air-borne radar data
Radar-detected internal layering contains information on past accumulation rates and patterns. In this study, we assume that the radar layers are isochrones, and use the layer stratigraphy in combination with ice-core measurements and numerical methods to retrieve accumulation information for the no...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.868448 2023-05-15T16:24:51+02:00 Accumulation rates during 1311-2011 CE in North Central Greenland derived from air-borne radar data Karlsson, Nanna Bjørnholt Eisen, Olaf Dahl-Jensen, Dorthe Freitag, Johannes Kipfstuhl, Sepp Lewis, Cameron Nielsen, Lisbeth T Paden, John D Winter, Anna Wilhelms, Frank MEDIAN LATITUDE: 76.523188 * MEDIAN LONGITUDE: -46.772117 * SOUTH-BOUND LATITUDE: 74.904000 * WEST-BOUND LONGITUDE: -54.212000 * NORTH-BOUND LATITUDE: 77.848000 * EAST-BOUND LONGITUDE: -40.961000 2016-11-16 application/zip, 3 datasets https://doi.pangaea.de/10.1594/PANGAEA.868448 https://doi.org/10.1594/PANGAEA.868448 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.868448 https://doi.org/10.1594/PANGAEA.868448 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Supplement to: Karlsson, Nanna Bjørnholt; Eisen, Olaf; Dahl-Jensen, Dorthe; Freitag, Johannes; Kipfstuhl, Sepp; Lewis, Cameron; Nielsen, Lisbeth T; Paden, John D; Winter, Anna; Wilhelms, Frank (2016): Accumulation rates during 1311-2011 CE in North Central Greenland derived from air-borne radar data. Frontiers in Earth Science, 4(97), 18 pp, https://doi.org/10.3389/feart.2016.00097 NEEM NGRIP North Greenland Eemian Ice Drilling North Greenland Ice Core Project Dataset 2016 ftpangaea https://doi.org/10.1594/PANGAEA.868448 https://doi.org/10.3389/feart.2016.00097 2023-01-20T07:33:48Z Radar-detected internal layering contains information on past accumulation rates and patterns. In this study, we assume that the radar layers are isochrones, and use the layer stratigraphy in combination with ice-core measurements and numerical methods to retrieve accumulation information for the northern part of central Greenland. Measurements of the dielectric properties of an ice core from the NEEM (North Greenland Eemian Ice Drilling) site, allow for correlation of the radar layers with volcanic horizons to obtain an accurate age of the layers. We obtain 100 a averaged accumulation patterns for the period 1311-2011 for a 300 by 350 km area encompassing the two ice-core sites: NEEM and NGRIP (North Greenland Ice Core Project). Our results show a clear trend of high accumulation rates west of the ice divide and low accumulation rates east of the ice divide. At the NEEM site, this accumulation pattern persists throughout our study period with only minor temporal variations in the accumulation rate. In contrast, the accumulation rate shows more pronounced temporal variations (based on our centennial averages) from 170 km south of the NEEM site to the NGRIP site. We attribute this variation to shifts in the location of the high?low accumulation boundary away from the ice divide. Dataset Greenland Greenland ice core Greenland Ice core Project ice core NGRIP North Greenland North Greenland Ice Core Project PANGAEA - Data Publisher for Earth & Environmental Science Greenland ENVELOPE(-54.212000,-40.961000,77.848000,74.904000) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
NEEM NGRIP North Greenland Eemian Ice Drilling North Greenland Ice Core Project |
spellingShingle |
NEEM NGRIP North Greenland Eemian Ice Drilling North Greenland Ice Core Project Karlsson, Nanna Bjørnholt Eisen, Olaf Dahl-Jensen, Dorthe Freitag, Johannes Kipfstuhl, Sepp Lewis, Cameron Nielsen, Lisbeth T Paden, John D Winter, Anna Wilhelms, Frank Accumulation rates during 1311-2011 CE in North Central Greenland derived from air-borne radar data |
topic_facet |
NEEM NGRIP North Greenland Eemian Ice Drilling North Greenland Ice Core Project |
description |
Radar-detected internal layering contains information on past accumulation rates and patterns. In this study, we assume that the radar layers are isochrones, and use the layer stratigraphy in combination with ice-core measurements and numerical methods to retrieve accumulation information for the northern part of central Greenland. Measurements of the dielectric properties of an ice core from the NEEM (North Greenland Eemian Ice Drilling) site, allow for correlation of the radar layers with volcanic horizons to obtain an accurate age of the layers. We obtain 100 a averaged accumulation patterns for the period 1311-2011 for a 300 by 350 km area encompassing the two ice-core sites: NEEM and NGRIP (North Greenland Ice Core Project). Our results show a clear trend of high accumulation rates west of the ice divide and low accumulation rates east of the ice divide. At the NEEM site, this accumulation pattern persists throughout our study period with only minor temporal variations in the accumulation rate. In contrast, the accumulation rate shows more pronounced temporal variations (based on our centennial averages) from 170 km south of the NEEM site to the NGRIP site. We attribute this variation to shifts in the location of the high?low accumulation boundary away from the ice divide. |
format |
Dataset |
author |
Karlsson, Nanna Bjørnholt Eisen, Olaf Dahl-Jensen, Dorthe Freitag, Johannes Kipfstuhl, Sepp Lewis, Cameron Nielsen, Lisbeth T Paden, John D Winter, Anna Wilhelms, Frank |
author_facet |
Karlsson, Nanna Bjørnholt Eisen, Olaf Dahl-Jensen, Dorthe Freitag, Johannes Kipfstuhl, Sepp Lewis, Cameron Nielsen, Lisbeth T Paden, John D Winter, Anna Wilhelms, Frank |
author_sort |
Karlsson, Nanna Bjørnholt |
title |
Accumulation rates during 1311-2011 CE in North Central Greenland derived from air-borne radar data |
title_short |
Accumulation rates during 1311-2011 CE in North Central Greenland derived from air-borne radar data |
title_full |
Accumulation rates during 1311-2011 CE in North Central Greenland derived from air-borne radar data |
title_fullStr |
Accumulation rates during 1311-2011 CE in North Central Greenland derived from air-borne radar data |
title_full_unstemmed |
Accumulation rates during 1311-2011 CE in North Central Greenland derived from air-borne radar data |
title_sort |
accumulation rates during 1311-2011 ce in north central greenland derived from air-borne radar data |
publisher |
PANGAEA |
publishDate |
2016 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.868448 https://doi.org/10.1594/PANGAEA.868448 |
op_coverage |
MEDIAN LATITUDE: 76.523188 * MEDIAN LONGITUDE: -46.772117 * SOUTH-BOUND LATITUDE: 74.904000 * WEST-BOUND LONGITUDE: -54.212000 * NORTH-BOUND LATITUDE: 77.848000 * EAST-BOUND LONGITUDE: -40.961000 |
long_lat |
ENVELOPE(-54.212000,-40.961000,77.848000,74.904000) |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Greenland Greenland ice core Greenland Ice core Project ice core NGRIP North Greenland North Greenland Ice Core Project |
genre_facet |
Greenland Greenland ice core Greenland Ice core Project ice core NGRIP North Greenland North Greenland Ice Core Project |
op_source |
Supplement to: Karlsson, Nanna Bjørnholt; Eisen, Olaf; Dahl-Jensen, Dorthe; Freitag, Johannes; Kipfstuhl, Sepp; Lewis, Cameron; Nielsen, Lisbeth T; Paden, John D; Winter, Anna; Wilhelms, Frank (2016): Accumulation rates during 1311-2011 CE in North Central Greenland derived from air-borne radar data. Frontiers in Earth Science, 4(97), 18 pp, https://doi.org/10.3389/feart.2016.00097 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.868448 https://doi.org/10.1594/PANGAEA.868448 |
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.868448 https://doi.org/10.3389/feart.2016.00097 |
_version_ |
1766013447417364480 |