Dynamic Mass Loss from Greenland's Peripheral Glaciers
While global glacier mass balance has decreased rapidly over the last two decades, mass loss has been greatest in regions with marine-terminating glaciers. In Greenland, peripheral glaciers and ice caps (GICs) cover only ~5% of Greenland’s area but contributed ~14-20% of the island’s ice mass loss b...
Main Author: | |
---|---|
Format: | Text |
Language: | unknown |
Published: |
ScholarWorks
2021
|
Subjects: | |
Online Access: | https://scholarworks.boisestate.edu/td/1862 https://doi.org/10.18122/td.1862.boisestate https://scholarworks.boisestate.edu/context/td/article/2995/viewcontent/Bollen_Kate_thesis_August_2021.pdf |
id |
ftboisestateu:oai:scholarworks.boisestate.edu:td-2995 |
---|---|
record_format |
openpolar |
spelling |
ftboisestateu:oai:scholarworks.boisestate.edu:td-2995 2023-10-29T02:36:28+01:00 Dynamic Mass Loss from Greenland's Peripheral Glaciers Bollen, Katherine E. 2021-08-01T07:00:00Z application/pdf https://scholarworks.boisestate.edu/td/1862 https://doi.org/10.18122/td.1862.boisestate https://scholarworks.boisestate.edu/context/td/article/2995/viewcontent/Bollen_Kate_thesis_August_2021.pdf unknown ScholarWorks https://scholarworks.boisestate.edu/td/1862 doi:10.18122/td.1862.boisestate https://scholarworks.boisestate.edu/context/td/article/2995/viewcontent/Bollen_Kate_thesis_August_2021.pdf Boise State University Theses and Dissertations cryosphere discharge dynamic mass loss remote sensing Geophysics and Seismology text 2021 ftboisestateu https://doi.org/10.18122/td.1862.boisestate 2023-09-29T15:22:31Z While global glacier mass balance has decreased rapidly over the last two decades, mass loss has been greatest in regions with marine-terminating glaciers. In Greenland, peripheral glaciers and ice caps (GICs) cover only ~5% of Greenland’s area but contributed ~14-20% of the island’s ice mass loss between 2003-2008. Although Greenland GIC’s mass loss due to surface meltwater runoff have been estimated using atmospheric models, mass loss due to changes in ice discharge into surrounding ocean basins (i.e., dynamic mass loss) remains unquantified. Here, we use the flux gate method to estimate discharge from Greenland’s 594 marine-terminating peripheral glaciers between 1985 – 2018, and compute dynamic mass loss as the discharge anomaly relative to the 1985-1998 period. Greenland GIC discharge averages 2.14 Gt/yr from 1985-1998 and abruptly increases to an average of 3.87 Gt/yr from 1999-2018, indicating a -1.72 Gt/yr mass anomaly. This mass loss is driven by synchronous widespread acceleration around Greenland and, like the ice sheet, is primarily caused by changes in discharge from a small number of glaciers with larger discharge. These estimates indicate that although Greenland GICs are small, they are sensitive to changes in climate and should not be overlooked in future analyses of glacier dynamics and mass loss. Text glacier Greenland Ice Sheet Boise State University: Scholar Works |
institution |
Open Polar |
collection |
Boise State University: Scholar Works |
op_collection_id |
ftboisestateu |
language |
unknown |
topic |
cryosphere discharge dynamic mass loss remote sensing Geophysics and Seismology |
spellingShingle |
cryosphere discharge dynamic mass loss remote sensing Geophysics and Seismology Bollen, Katherine E. Dynamic Mass Loss from Greenland's Peripheral Glaciers |
topic_facet |
cryosphere discharge dynamic mass loss remote sensing Geophysics and Seismology |
description |
While global glacier mass balance has decreased rapidly over the last two decades, mass loss has been greatest in regions with marine-terminating glaciers. In Greenland, peripheral glaciers and ice caps (GICs) cover only ~5% of Greenland’s area but contributed ~14-20% of the island’s ice mass loss between 2003-2008. Although Greenland GIC’s mass loss due to surface meltwater runoff have been estimated using atmospheric models, mass loss due to changes in ice discharge into surrounding ocean basins (i.e., dynamic mass loss) remains unquantified. Here, we use the flux gate method to estimate discharge from Greenland’s 594 marine-terminating peripheral glaciers between 1985 – 2018, and compute dynamic mass loss as the discharge anomaly relative to the 1985-1998 period. Greenland GIC discharge averages 2.14 Gt/yr from 1985-1998 and abruptly increases to an average of 3.87 Gt/yr from 1999-2018, indicating a -1.72 Gt/yr mass anomaly. This mass loss is driven by synchronous widespread acceleration around Greenland and, like the ice sheet, is primarily caused by changes in discharge from a small number of glaciers with larger discharge. These estimates indicate that although Greenland GICs are small, they are sensitive to changes in climate and should not be overlooked in future analyses of glacier dynamics and mass loss. |
format |
Text |
author |
Bollen, Katherine E. |
author_facet |
Bollen, Katherine E. |
author_sort |
Bollen, Katherine E. |
title |
Dynamic Mass Loss from Greenland's Peripheral Glaciers |
title_short |
Dynamic Mass Loss from Greenland's Peripheral Glaciers |
title_full |
Dynamic Mass Loss from Greenland's Peripheral Glaciers |
title_fullStr |
Dynamic Mass Loss from Greenland's Peripheral Glaciers |
title_full_unstemmed |
Dynamic Mass Loss from Greenland's Peripheral Glaciers |
title_sort |
dynamic mass loss from greenland's peripheral glaciers |
publisher |
ScholarWorks |
publishDate |
2021 |
url |
https://scholarworks.boisestate.edu/td/1862 https://doi.org/10.18122/td.1862.boisestate https://scholarworks.boisestate.edu/context/td/article/2995/viewcontent/Bollen_Kate_thesis_August_2021.pdf |
genre |
glacier Greenland Ice Sheet |
genre_facet |
glacier Greenland Ice Sheet |
op_source |
Boise State University Theses and Dissertations |
op_relation |
https://scholarworks.boisestate.edu/td/1862 doi:10.18122/td.1862.boisestate https://scholarworks.boisestate.edu/context/td/article/2995/viewcontent/Bollen_Kate_thesis_August_2021.pdf |
op_doi |
https://doi.org/10.18122/td.1862.boisestate |
_version_ |
1781060436692566016 |