Vast ice depression in Dålk Glacier,  East Antarctica

Popov, Sergey; Пряхин, С. С.; Bliakharskii, D. P.; Пряхина, Г. В.; Тюрин, С. В.

doi:10.15356/2076-6734-2017-3-427-432

Cited by 17 publications

(6 citation statements)

References 6 publications

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“…In the discussed case, the supposed chain of events is as follows [11]. A subglacial water flow originated within the Boulder Lake basin located 1.5 km south of the subsidence zone (Fig.…”

Section: Resultsmentioning

confidence: 99%

The 2017 catastrophic subsidence in the Dålk Glacier: Unmanned aerial survey and digital terrain analysis

Florinsky

Bliakharskii

Попов³

et al. 2018

Preprint

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Abstract-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.

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“…In the discussed case, the supposed chain of events is as follows [11]. A subglacial water flow originated within the Boulder Lake basin located 1.5 km south of the subsidence zone (Fig.…”

Section: Resultsmentioning

confidence: 99%

The 2017 catastrophic subsidence in the Dålk Glacier: Unmanned aerial survey and digital terrain analysis

Florinsky

Bliakharskii

Попов³

et al. 2018

Preprint

View full text Add to dashboard Cite

show abstract

“…In the discussed case, the supposed chain of events is as follows [11]. A subglacial water flow originated within the Figure 3.…”

Section: Resultsmentioning

confidence: 99%

The 2017 catastrophic subsidence in the Dålk Glacier: Unmanned aerial survey and digital terrain analysis

Florinsky

Bliakharskii

Popov³

et al. 2018

Preprint

View full text Add to dashboard Cite

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.

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“…It completely destroyed the main road which connected the station with the airdrome and the start point of the logistic traverses to Vostok Station. Eyewitnesses said that it was only luck that prevented the death of 20 people who crossed this area on a tractor less than half an hour before the dip formation (Popov and others, 2017). Next year GPR engineering survey proceeded to find a new safe path bypassing the dip.…”

Section: Ground-based Gpr Investigations: Since 2012 Until Nowmentioning

confidence: 99%

Fifty-five years of Russian radio-echo sounding investigations in Antarctica

Попов

2020

Ann. Glaciol.

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Russian (former Soviet) systematic studies of Antarctica by radio-echo sounding (RES) and ground-penetrating radar technique (GPR) were commenced in 1964. Since that time airborne RES surveys have covered about 5.5 × 106 km2 of the icy continent discovering remarkable geographic objects such as Subglacial Gamburtsev Mountains, and allowed studies of Filchner-Ronne Ice Shelf, Amery Ice Shelf and Lambert Glacier. Ground-based investigations during the 1990s and 2000s revealed the structure of the Lake Vostok area and surveyed along the Mirny to Vostok and Progress to Vostok traverse routes. GPR studies during the 2010s were to select the site for a new snow-runway at Mirny Station, with the resumption of the aviation after a 25 year hiatus.

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Vast ice depression in Dålk Glacier, East Antarctica

Cited by 17 publications

References 6 publications

The 2017 catastrophic subsidence in the Dålk Glacier: Unmanned aerial survey and digital terrain analysis

The 2017 catastrophic subsidence in the Dålk Glacier: Unmanned aerial survey and digital terrain analysis

The 2017 catastrophic subsidence in the Dålk Glacier: Unmanned aerial survey and digital terrain analysis

Fifty-five years of Russian radio-echo sounding investigations in Antarctica

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