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...
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MDPI AG
2020-05-01
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| Series: | Remote Sensing |
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| Online Access: | https://www.mdpi.com/2072-4292/12/9/1474 |
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| 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 |
| collection | DOAJ |
| 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. |
| first_indexed | 2024-03-10T20:00:34Z |
| format | Article |
| id | doaj.art-af9fb0749a28408681acca97add90945 |
| institution | Directory Open Access Journal |
| issn | 2072-4292 |
| language | English |
| last_indexed | 2024-03-10T20:00:34Z |
| publishDate | 2020-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Remote Sensing |
| spelling | doaj.art-af9fb0749a28408681acca97add909452023-11-19T23:37:11ZengMDPI AGRemote Sensing2072-42922020-05-01129147410.3390/rs12091474Basal Channel Extraction and Variation Analysis of Nioghalvfjerdsfjorden Ice Shelf in GreenlandZemin Wang0Xiangyu Song1Baojun Zhang2Tingting Liu3Hong Geng4Chinese Antarctic Center of Surveying and Mapping, Wuhan University, Wuhan 430079, ChinaChinese Antarctic Center of Surveying and Mapping, Wuhan University, Wuhan 430079, ChinaKey Laboratory of Information Engineering in Surveying, Mapping and Remote Sensing, Wuhan University, Wuhan 430079, ChinaChinese Antarctic Center of Surveying and Mapping, Wuhan University, Wuhan 430079, ChinaSchool of Resource and Environment Science, Wuhan University, Wuhan 430079, ChinaThe 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.https://www.mdpi.com/2072-4292/12/9/1474basal channelice shelfICESatIceBridgeLandsat |
| spellingShingle | Zemin Wang Xiangyu Song Baojun Zhang Tingting Liu Hong Geng Basal Channel Extraction and Variation Analysis of Nioghalvfjerdsfjorden Ice Shelf in Greenland Remote Sensing basal channel ice shelf ICESat IceBridge Landsat |
| title | 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_short | 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 |
| topic | basal channel ice shelf ICESat IceBridge Landsat |
| url | https://www.mdpi.com/2072-4292/12/9/1474 |
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