Basal Channel Extraction and Variation Analysis of Nioghalvfjerdsfjorden Ice Shelf in Greenland
The ice shelf controls the ice flow and affects the rates of sea level rise. Its stability is affected by the basal channel to some extent. However, despite its importance, high spatiotemporal variation in the length of the basal channels and influencing factors remain poorly characterized. Here, we...
Published in: | Remote Sensing |
---|---|
Main Authors: | , , , , |
Format: | Text |
Language: | English |
Published: |
Multidisciplinary Digital Publishing Institute
2020
|
Subjects: | |
Online Access: | https://doi.org/10.3390/rs12091474 |
id |
ftmdpi:oai:mdpi.com:/2072-4292/12/9/1474/ |
---|---|
record_format |
openpolar |
spelling |
ftmdpi:oai:mdpi.com:/2072-4292/12/9/1474/ 2023-10-09T21:51:45+02:00 Basal Channel Extraction and Variation Analysis of Nioghalvfjerdsfjorden Ice Shelf in Greenland Zemin Wang Xiangyu Song Baojun Zhang Tingting Liu Hong Geng agris 2020-05-06 application/pdf https://doi.org/10.3390/rs12091474 eng eng Multidisciplinary Digital Publishing Institute Environmental Remote Sensing https://dx.doi.org/10.3390/rs12091474 https://creativecommons.org/licenses/by/4.0/ Remote Sensing Volume 12 Issue 9 Pages: 1474 basal channel ice shelf ICESat IceBridge Landsat Text 2020 ftmdpi https://doi.org/10.3390/rs12091474 2023-09-10T23:55:37Z The ice shelf controls the ice flow and affects the rates of sea level rise. Its stability is affected by the basal channel to some extent. However, despite its importance, high spatiotemporal variation in the length of the basal channels and influencing factors remain poorly characterized. Here, we present evidence from satellite and airborne remote-sensing for the basal channel beneath the floating Nioghalvfjerdsfjorden (79 North Glacier) ice shelf in Northeast Greenland. We observe the surface depression of the ice shelf using IceBridge, which is an ongoing NASA mission to monitor changes in polar ice. We find that the basal channel corresponds with the depression. Temporal and spatial changes of the basal channels from 2000 to 2018 are obtained annually. The results show that the main influencing factor affecting the basal channel is the sea surface temperature (SST), and the major area of the channel length change is found in the midstream area of the ice shelf. Text glacier Greenland Ice Shelf Nioghalvfjerdsfjorden MDPI Open Access Publishing Greenland Nioghalvfjerdsfjorden ENVELOPE(-21.500,-21.500,79.500,79.500) Remote Sensing 12 9 1474 |
institution |
Open Polar |
collection |
MDPI Open Access Publishing |
op_collection_id |
ftmdpi |
language |
English |
topic |
basal channel ice shelf ICESat IceBridge Landsat |
spellingShingle |
basal channel ice shelf ICESat IceBridge Landsat Zemin Wang Xiangyu Song Baojun Zhang Tingting Liu Hong Geng Basal Channel Extraction and Variation Analysis of Nioghalvfjerdsfjorden Ice Shelf in Greenland |
topic_facet |
basal channel ice shelf ICESat IceBridge Landsat |
description |
The ice shelf controls the ice flow and affects the rates of sea level rise. Its stability is affected by the basal channel to some extent. However, despite its importance, high spatiotemporal variation in the length of the basal channels and influencing factors remain poorly characterized. Here, we present evidence from satellite and airborne remote-sensing for the basal channel beneath the floating Nioghalvfjerdsfjorden (79 North Glacier) ice shelf in Northeast Greenland. We observe the surface depression of the ice shelf using IceBridge, which is an ongoing NASA mission to monitor changes in polar ice. We find that the basal channel corresponds with the depression. Temporal and spatial changes of the basal channels from 2000 to 2018 are obtained annually. The results show that the main influencing factor affecting the basal channel is the sea surface temperature (SST), and the major area of the channel length change is found in the midstream area of the ice shelf. |
format |
Text |
author |
Zemin Wang Xiangyu Song Baojun Zhang Tingting Liu Hong Geng |
author_facet |
Zemin Wang Xiangyu Song Baojun Zhang Tingting Liu Hong Geng |
author_sort |
Zemin Wang |
title |
Basal Channel Extraction and Variation Analysis of Nioghalvfjerdsfjorden Ice Shelf in Greenland |
title_short |
Basal Channel Extraction and Variation Analysis of Nioghalvfjerdsfjorden Ice Shelf in Greenland |
title_full |
Basal Channel Extraction and Variation Analysis of Nioghalvfjerdsfjorden Ice Shelf in Greenland |
title_fullStr |
Basal Channel Extraction and Variation Analysis of Nioghalvfjerdsfjorden Ice Shelf in Greenland |
title_full_unstemmed |
Basal Channel Extraction and Variation Analysis of Nioghalvfjerdsfjorden Ice Shelf in Greenland |
title_sort |
basal channel extraction and variation analysis of nioghalvfjerdsfjorden ice shelf in greenland |
publisher |
Multidisciplinary Digital Publishing Institute |
publishDate |
2020 |
url |
https://doi.org/10.3390/rs12091474 |
op_coverage |
agris |
long_lat |
ENVELOPE(-21.500,-21.500,79.500,79.500) |
geographic |
Greenland Nioghalvfjerdsfjorden |
geographic_facet |
Greenland Nioghalvfjerdsfjorden |
genre |
glacier Greenland Ice Shelf Nioghalvfjerdsfjorden |
genre_facet |
glacier Greenland Ice Shelf Nioghalvfjerdsfjorden |
op_source |
Remote Sensing Volume 12 Issue 9 Pages: 1474 |
op_relation |
Environmental Remote Sensing https://dx.doi.org/10.3390/rs12091474 |
op_rights |
https://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.3390/rs12091474 |
container_title |
Remote Sensing |
container_volume |
12 |
container_issue |
9 |
container_start_page |
1474 |
_version_ |
1779314858622189568 |