The 2017 catastrophic subsidence in the Dålk Glacier: Unmanned aerial survey and digital terrain analysis
We present the first results from a study of the 2017 catastrophic subsidence in the Dålk Glacier, East Antarctica using an unmanned aerial system (UAS) and UAS-derived DEMs. The subsided portion of the Dålk Glacier and adjacent territory was surveyed in two flights, before and after the collapse. T...
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crpeerj:10.7287/peerj.preprints.27064v1 2024-06-02T07:56:32+00:00 The 2017 catastrophic subsidence in the Dålk Glacier: Unmanned aerial survey and digital terrain analysis Florinsky, Igor V Bliakharskii, Dmitrii Popov, Sergei Pryakhin, Sergei 2018 http://dx.doi.org/10.7287/peerj.preprints.27064v1 https://peerj.com/preprints/27064v1.pdf https://peerj.com/preprints/27064v1.xml https://peerj.com/preprints/27064v1.html unknown PeerJ http://creativecommons.org/licenses/by/4.0/ posted-content 2018 crpeerj https://doi.org/10.7287/peerj.preprints.27064v1 2024-05-07T14:14:34Z We present the first results from a study of the 2017 catastrophic subsidence in the Dålk Glacier, East Antarctica using an unmanned aerial system (UAS) and UAS-derived DEMs. The subsided portion of the Dålk Glacier and adjacent territory was surveyed in two flights, before and after the collapse. The survey was performed by Geoscan 201, a small flying-wing UAS. Aerial images have an average resolution of 6 cm. Using Agisoft PhotoScan software, we generated two DEMs with a resolution of 22 cm related to the pre- and post-collapsed glacier surface. To model the pre-collapsed subglacial cavern, one DEM was subtracted from the other. Finally, we discuss a probable mechanism of the catastrophic subsidence. Other/Unknown Material Antarc* Antarctica East Antarctica PeerJ Publishing Dålk Glacier ENVELOPE(76.472,76.472,-69.426,-69.426) East Antarctica |
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Open Polar |
collection |
PeerJ Publishing |
op_collection_id |
crpeerj |
language |
unknown |
description |
We present the first results from a study of the 2017 catastrophic subsidence in the Dålk Glacier, East Antarctica using an unmanned aerial system (UAS) and UAS-derived DEMs. The subsided portion of the Dålk Glacier and adjacent territory was surveyed in two flights, before and after the collapse. The survey was performed by Geoscan 201, a small flying-wing UAS. Aerial images have an average resolution of 6 cm. Using Agisoft PhotoScan software, we generated two DEMs with a resolution of 22 cm related to the pre- and post-collapsed glacier surface. To model the pre-collapsed subglacial cavern, one DEM was subtracted from the other. Finally, we discuss a probable mechanism of the catastrophic subsidence. |
format |
Other/Unknown Material |
author |
Florinsky, Igor V Bliakharskii, Dmitrii Popov, Sergei Pryakhin, Sergei |
spellingShingle |
Florinsky, Igor V Bliakharskii, Dmitrii Popov, Sergei Pryakhin, Sergei The 2017 catastrophic subsidence in the Dålk Glacier: Unmanned aerial survey and digital terrain analysis |
author_facet |
Florinsky, Igor V Bliakharskii, Dmitrii Popov, Sergei Pryakhin, Sergei |
author_sort |
Florinsky, Igor V |
title |
The 2017 catastrophic subsidence in the Dålk Glacier: Unmanned aerial survey and digital terrain analysis |
title_short |
The 2017 catastrophic subsidence in the Dålk Glacier: Unmanned aerial survey and digital terrain analysis |
title_full |
The 2017 catastrophic subsidence in the Dålk Glacier: Unmanned aerial survey and digital terrain analysis |
title_fullStr |
The 2017 catastrophic subsidence in the Dålk Glacier: Unmanned aerial survey and digital terrain analysis |
title_full_unstemmed |
The 2017 catastrophic subsidence in the Dålk Glacier: Unmanned aerial survey and digital terrain analysis |
title_sort |
2017 catastrophic subsidence in the dålk glacier: unmanned aerial survey and digital terrain analysis |
publisher |
PeerJ |
publishDate |
2018 |
url |
http://dx.doi.org/10.7287/peerj.preprints.27064v1 https://peerj.com/preprints/27064v1.pdf https://peerj.com/preprints/27064v1.xml https://peerj.com/preprints/27064v1.html |
long_lat |
ENVELOPE(76.472,76.472,-69.426,-69.426) |
geographic |
Dålk Glacier East Antarctica |
geographic_facet |
Dålk Glacier East Antarctica |
genre |
Antarc* Antarctica East Antarctica |
genre_facet |
Antarc* Antarctica East Antarctica |
op_rights |
http://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.7287/peerj.preprints.27064v1 |
_version_ |
1800756811943378944 |