High-resolution elevation models of Larsen B glaciers extracted from 1960s imagery
Abstract Accelerated warming since the 1950s has caused dramatic change to ice shelves and outlet glaciers on the Antarctic Peninsula. Long observational records of ice loss in Antarctica are rare but essential to accurately inform mass balance estimates of glaciers. Here, we use aerial images from...
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ftdoajarticles:oai:doaj.org/article:0c35599add74440abe6fb4922719acff 2024-09-15T17:48:10+00:00 High-resolution elevation models of Larsen B glaciers extracted from 1960s imagery Ryan North Timothy T. Barrows 2024-07-01T00:00:00Z https://doi.org/10.1038/s41598-024-65081-6 https://doaj.org/article/0c35599add74440abe6fb4922719acff EN eng Nature Portfolio https://doi.org/10.1038/s41598-024-65081-6 https://doaj.org/toc/2045-2322 doi:10.1038/s41598-024-65081-6 2045-2322 https://doaj.org/article/0c35599add74440abe6fb4922719acff Scientific Reports, Vol 14, Iss 1, Pp 1-15 (2024) Antarctica Photogrammetry Sea-level rise Ice shelf collapse DEM Medicine R Science Q article 2024 ftdoajarticles https://doi.org/10.1038/s41598-024-65081-6 2024-08-05T17:48:55Z Abstract Accelerated warming since the 1950s has caused dramatic change to ice shelves and outlet glaciers on the Antarctic Peninsula. Long observational records of ice loss in Antarctica are rare but essential to accurately inform mass balance estimates of glaciers. Here, we use aerial images from 1968 to reveal glacier configurations in the Larsen B region. We use structure-from-motion photogrammetry to construct high-resolution (3.2 m at best) elevation models covering up to 91% of Jorum, Crane, Mapple, Melville and Flask Glaciers. The historical elevation models provide glacier geometries decades before the Larsen B Ice Shelf collapse in 2002, allowing the determination of pre-collapse and post-collapse elevation differences. Results confirm that these five tributary glaciers of the former Larsen B Ice Shelf were relatively stable between 1968 and 2001. However, the net surface elevation differences over grounded ice between 1968 and 2021 equate to 35.3 ± 1.2 Gt of ice loss related to dynamic changes after the ice shelf removal. Archived imagery is an underutilised resource in Antarctica and was crucial here to observe glacier geometry in high-resolution decades before significant changes to ice dynamics. Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Antarctica Ice Shelf Ice Shelves Directory of Open Access Journals: DOAJ Articles Scientific Reports 14 1 |
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Open Polar |
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Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Antarctica Photogrammetry Sea-level rise Ice shelf collapse DEM Medicine R Science Q |
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Antarctica Photogrammetry Sea-level rise Ice shelf collapse DEM Medicine R Science Q Ryan North Timothy T. Barrows High-resolution elevation models of Larsen B glaciers extracted from 1960s imagery |
topic_facet |
Antarctica Photogrammetry Sea-level rise Ice shelf collapse DEM Medicine R Science Q |
description |
Abstract Accelerated warming since the 1950s has caused dramatic change to ice shelves and outlet glaciers on the Antarctic Peninsula. Long observational records of ice loss in Antarctica are rare but essential to accurately inform mass balance estimates of glaciers. Here, we use aerial images from 1968 to reveal glacier configurations in the Larsen B region. We use structure-from-motion photogrammetry to construct high-resolution (3.2 m at best) elevation models covering up to 91% of Jorum, Crane, Mapple, Melville and Flask Glaciers. The historical elevation models provide glacier geometries decades before the Larsen B Ice Shelf collapse in 2002, allowing the determination of pre-collapse and post-collapse elevation differences. Results confirm that these five tributary glaciers of the former Larsen B Ice Shelf were relatively stable between 1968 and 2001. However, the net surface elevation differences over grounded ice between 1968 and 2021 equate to 35.3 ± 1.2 Gt of ice loss related to dynamic changes after the ice shelf removal. Archived imagery is an underutilised resource in Antarctica and was crucial here to observe glacier geometry in high-resolution decades before significant changes to ice dynamics. |
format |
Article in Journal/Newspaper |
author |
Ryan North Timothy T. Barrows |
author_facet |
Ryan North Timothy T. Barrows |
author_sort |
Ryan North |
title |
High-resolution elevation models of Larsen B glaciers extracted from 1960s imagery |
title_short |
High-resolution elevation models of Larsen B glaciers extracted from 1960s imagery |
title_full |
High-resolution elevation models of Larsen B glaciers extracted from 1960s imagery |
title_fullStr |
High-resolution elevation models of Larsen B glaciers extracted from 1960s imagery |
title_full_unstemmed |
High-resolution elevation models of Larsen B glaciers extracted from 1960s imagery |
title_sort |
high-resolution elevation models of larsen b glaciers extracted from 1960s imagery |
publisher |
Nature Portfolio |
publishDate |
2024 |
url |
https://doi.org/10.1038/s41598-024-65081-6 https://doaj.org/article/0c35599add74440abe6fb4922719acff |
genre |
Antarc* Antarctic Antarctic Peninsula Antarctica Ice Shelf Ice Shelves |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Antarctica Ice Shelf Ice Shelves |
op_source |
Scientific Reports, Vol 14, Iss 1, Pp 1-15 (2024) |
op_relation |
https://doi.org/10.1038/s41598-024-65081-6 https://doaj.org/toc/2045-2322 doi:10.1038/s41598-024-65081-6 2045-2322 https://doaj.org/article/0c35599add74440abe6fb4922719acff |
op_doi |
https://doi.org/10.1038/s41598-024-65081-6 |
container_title |
Scientific Reports |
container_volume |
14 |
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1 |
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1810289306777944064 |