Remotely sensed surface velocities, Lagrangian basal melt rates, terminus positions, grounding lines as well as modelling results of Peterman Glacier (northern Greenland), supplement to: Rückamp, Martin; Neckel, Niklas; Berger, Sophie; Humbert, Angelika; Helm, Veit (2019): Calving Induced Speedup of Petermann Glacier. Journal of Geophysical Research-Earth Surface
This study assesses the response on ice dynamics of Petermann Glacier, a major outlet glacier in northern Greenland, to the 2012 and a possible future calving event. So far Petermann Glacier has been believed to be dynamically stable as another large calving event in 2010 had no significant impact o...
Main Authors: | , , , , |
---|---|
Format: | Dataset |
Language: | English |
Published: |
PANGAEA - Data Publisher for Earth & Environmental Science
2018
|
Subjects: | |
Online Access: | https://dx.doi.org/10.1594/pangaea.896907 https://doi.pangaea.de/10.1594/PANGAEA.896907 |
id |
ftdatacite:10.1594/pangaea.896907 |
---|---|
record_format |
openpolar |
spelling |
ftdatacite:10.1594/pangaea.896907 2023-05-15T16:21:08+02:00 Remotely sensed surface velocities, Lagrangian basal melt rates, terminus positions, grounding lines as well as modelling results of Peterman Glacier (northern Greenland), supplement to: Rückamp, Martin; Neckel, Niklas; Berger, Sophie; Humbert, Angelika; Helm, Veit (2019): Calving Induced Speedup of Petermann Glacier. Journal of Geophysical Research-Earth Surface Rückamp, Martin Neckel, Niklas Berger, Sophie Humbert, Angelika Helm, Veit 2018 text/tab-separated-values https://dx.doi.org/10.1594/pangaea.896907 https://doi.pangaea.de/10.1594/PANGAEA.896907 en eng PANGAEA - Data Publisher for Earth & Environmental Science https://dx.doi.org/10.1029/2018jf004775 Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 CC-BY File name File format File size Uniform resource locator/link to file Radar profile Glaciology @ AWI AWI_Glac Supplementary Dataset dataset Dataset 2018 ftdatacite https://doi.org/10.1594/pangaea.896907 https://doi.org/10.1029/2018jf004775 2021-11-05T12:55:41Z This study assesses the response on ice dynamics of Petermann Glacier, a major outlet glacier in northern Greenland, to the 2012 and a possible future calving event. So far Petermann Glacier has been believed to be dynamically stable as another large calving event in 2010 had no significant impact on flow velocity or grounding line retreat. By analyzing a time series of remotely sensed surface velocities, we find an average acceleration of 10% between winter 2011/2012 and winter 2016/2017. This increase in surface velocity is not linear but can be separated into two parts, starting in 2012 and 2016 respectively. By conducting modelling experiments, we show that the first speed-up can be directly connected to the 2012 calving event, while the second speed-up is not captured. However, on recent remote sensing imagery newly developing fractures are clearly visible ~12,km upstream from the terminus, propagating from the eastern fjord wall to the center of the ice tongue, indicating a possible future calving event. By including these fracture zones as a new terminus position in the modelling domain we are able to reproduce the second speed-up, suggesting that surface velocities remain on the 2016/2017 level after the anticipated calving event. This indicates that, from a dynamical point of view, the terminus region has already detached from the main ice tongue. Dataset glacier Greenland Petermann glacier 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 |
File name File format File size Uniform resource locator/link to file Radar profile Glaciology @ AWI AWI_Glac |
spellingShingle |
File name File format File size Uniform resource locator/link to file Radar profile Glaciology @ AWI AWI_Glac Rückamp, Martin Neckel, Niklas Berger, Sophie Humbert, Angelika Helm, Veit Remotely sensed surface velocities, Lagrangian basal melt rates, terminus positions, grounding lines as well as modelling results of Peterman Glacier (northern Greenland), supplement to: Rückamp, Martin; Neckel, Niklas; Berger, Sophie; Humbert, Angelika; Helm, Veit (2019): Calving Induced Speedup of Petermann Glacier. Journal of Geophysical Research-Earth Surface |
topic_facet |
File name File format File size Uniform resource locator/link to file Radar profile Glaciology @ AWI AWI_Glac |
description |
This study assesses the response on ice dynamics of Petermann Glacier, a major outlet glacier in northern Greenland, to the 2012 and a possible future calving event. So far Petermann Glacier has been believed to be dynamically stable as another large calving event in 2010 had no significant impact on flow velocity or grounding line retreat. By analyzing a time series of remotely sensed surface velocities, we find an average acceleration of 10% between winter 2011/2012 and winter 2016/2017. This increase in surface velocity is not linear but can be separated into two parts, starting in 2012 and 2016 respectively. By conducting modelling experiments, we show that the first speed-up can be directly connected to the 2012 calving event, while the second speed-up is not captured. However, on recent remote sensing imagery newly developing fractures are clearly visible ~12,km upstream from the terminus, propagating from the eastern fjord wall to the center of the ice tongue, indicating a possible future calving event. By including these fracture zones as a new terminus position in the modelling domain we are able to reproduce the second speed-up, suggesting that surface velocities remain on the 2016/2017 level after the anticipated calving event. This indicates that, from a dynamical point of view, the terminus region has already detached from the main ice tongue. |
format |
Dataset |
author |
Rückamp, Martin Neckel, Niklas Berger, Sophie Humbert, Angelika Helm, Veit |
author_facet |
Rückamp, Martin Neckel, Niklas Berger, Sophie Humbert, Angelika Helm, Veit |
author_sort |
Rückamp, Martin |
title |
Remotely sensed surface velocities, Lagrangian basal melt rates, terminus positions, grounding lines as well as modelling results of Peterman Glacier (northern Greenland), supplement to: Rückamp, Martin; Neckel, Niklas; Berger, Sophie; Humbert, Angelika; Helm, Veit (2019): Calving Induced Speedup of Petermann Glacier. Journal of Geophysical Research-Earth Surface |
title_short |
Remotely sensed surface velocities, Lagrangian basal melt rates, terminus positions, grounding lines as well as modelling results of Peterman Glacier (northern Greenland), supplement to: Rückamp, Martin; Neckel, Niklas; Berger, Sophie; Humbert, Angelika; Helm, Veit (2019): Calving Induced Speedup of Petermann Glacier. Journal of Geophysical Research-Earth Surface |
title_full |
Remotely sensed surface velocities, Lagrangian basal melt rates, terminus positions, grounding lines as well as modelling results of Peterman Glacier (northern Greenland), supplement to: Rückamp, Martin; Neckel, Niklas; Berger, Sophie; Humbert, Angelika; Helm, Veit (2019): Calving Induced Speedup of Petermann Glacier. Journal of Geophysical Research-Earth Surface |
title_fullStr |
Remotely sensed surface velocities, Lagrangian basal melt rates, terminus positions, grounding lines as well as modelling results of Peterman Glacier (northern Greenland), supplement to: Rückamp, Martin; Neckel, Niklas; Berger, Sophie; Humbert, Angelika; Helm, Veit (2019): Calving Induced Speedup of Petermann Glacier. Journal of Geophysical Research-Earth Surface |
title_full_unstemmed |
Remotely sensed surface velocities, Lagrangian basal melt rates, terminus positions, grounding lines as well as modelling results of Peterman Glacier (northern Greenland), supplement to: Rückamp, Martin; Neckel, Niklas; Berger, Sophie; Humbert, Angelika; Helm, Veit (2019): Calving Induced Speedup of Petermann Glacier. Journal of Geophysical Research-Earth Surface |
title_sort |
remotely sensed surface velocities, lagrangian basal melt rates, terminus positions, grounding lines as well as modelling results of peterman glacier (northern greenland), supplement to: rückamp, martin; neckel, niklas; berger, sophie; humbert, angelika; helm, veit (2019): calving induced speedup of petermann glacier. journal of geophysical research-earth surface |
publisher |
PANGAEA - Data Publisher for Earth & Environmental Science |
publishDate |
2018 |
url |
https://dx.doi.org/10.1594/pangaea.896907 https://doi.pangaea.de/10.1594/PANGAEA.896907 |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
glacier Greenland Petermann glacier |
genre_facet |
glacier Greenland Petermann glacier |
op_relation |
https://dx.doi.org/10.1029/2018jf004775 |
op_rights |
Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1594/pangaea.896907 https://doi.org/10.1029/2018jf004775 |
_version_ |
1766009154100527104 |