GPR surveys and RPA aerial photography using in conducting geocryological studies on the Oka plateau in the Eastern Sayan ridge
The results of ground-penetrating radar (GPR) studies of permafrost and aerial photography, carried out at key sites in the Sentsa River valley (Oka Plateau, Eastern Sayan Ridge), are presented.For geophysical studies, an OKO-2 GPR completed with an AB-90 shielded antenna unit was used with a maximu...
Published in: | Geodynamics & Tectonophysics |
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Russian Academy of Sciences, Siberian Branch, Institute of the Earth's crust
2022
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Online Access: | https://doi.org/10.5800/GT-2022-13-2s-0621 https://doaj.org/article/5c5c43acda7d4a2fac6d8cbf57a5e032 |
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ftdoajarticles:oai:doaj.org/article:5c5c43acda7d4a2fac6d8cbf57a5e032 2023-05-15T16:37:32+02:00 GPR surveys and RPA aerial photography using in conducting geocryological studies on the Oka plateau in the Eastern Sayan ridge S. V. Alexeev A. S. Gladkov V. A. Pellinen L. P. Alexeeva A. A. Svetlakov 2022-06-01T00:00:00Z https://doi.org/10.5800/GT-2022-13-2s-0621 https://doaj.org/article/5c5c43acda7d4a2fac6d8cbf57a5e032 EN RU eng rus Russian Academy of Sciences, Siberian Branch, Institute of the Earth's crust https://www.gt-crust.ru/jour/article/view/1390 https://doaj.org/toc/2078-502X 2078-502X doi:10.5800/GT-2022-13-2s-0621 https://doaj.org/article/5c5c43acda7d4a2fac6d8cbf57a5e032 Геодинамика и тектонофизика, Vol 13, Iss 2s (2022) mountain permafrost frost mounds active layer structure-forming ice ground-penetrating radar radarogram rpa aerial photography tacheometer Science Q article 2022 ftdoajarticles https://doi.org/10.5800/GT-2022-13-2s-0621 2022-12-30T21:41:08Z The results of ground-penetrating radar (GPR) studies of permafrost and aerial photography, carried out at key sites in the Sentsa River valley (Oka Plateau, Eastern Sayan Ridge), are presented.For geophysical studies, an OKO-2 GPR completed with an AB-90 shielded antenna unit was used with a maximum sounding depth of up to 20 m and a resolution of 0.5 m. To account for the landscape elevation, the Trimble TS635 tacheometer and the Leiсa DISTO D 510 rangefinder performed hypsometric measurements with a step of 1.0 m. Aerial photography was carried out by a remotely piloted aircraft (RPA) DJI Inspire 1 Pro, equipped with a Zenmuse 3X camera (a resolution of 3840×2160 pixels) with a spatial resolution of 5.7–7.8 cm/pixel (in different years).In the structure of frozen lacustrine-alluvial sediments, three GPR complexes are distinguished, corresponding to the active layer and frozen rocks with different amounts of schlieren, lenses and layers of texture-forming ice. The orthophoto map and tacheometric survey analysis showed that the destruction of frost mounds occurs from the second half of April to the first half of October. The most significant relief change is due to the thawing of icy pulverescent clayey silts. It leads to subsidence blocks in the ledge of the Sentsa River terrace. Lateral river thermoerosion also contributes to the frost mounds destruction. Article in Journal/Newspaper Ice permafrost Directory of Open Access Journals: DOAJ Articles Geodynamics & Tectonophysics |
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Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English Russian |
topic |
mountain permafrost frost mounds active layer structure-forming ice ground-penetrating radar radarogram rpa aerial photography tacheometer Science Q |
spellingShingle |
mountain permafrost frost mounds active layer structure-forming ice ground-penetrating radar radarogram rpa aerial photography tacheometer Science Q S. V. Alexeev A. S. Gladkov V. A. Pellinen L. P. Alexeeva A. A. Svetlakov GPR surveys and RPA aerial photography using in conducting geocryological studies on the Oka plateau in the Eastern Sayan ridge |
topic_facet |
mountain permafrost frost mounds active layer structure-forming ice ground-penetrating radar radarogram rpa aerial photography tacheometer Science Q |
description |
The results of ground-penetrating radar (GPR) studies of permafrost and aerial photography, carried out at key sites in the Sentsa River valley (Oka Plateau, Eastern Sayan Ridge), are presented.For geophysical studies, an OKO-2 GPR completed with an AB-90 shielded antenna unit was used with a maximum sounding depth of up to 20 m and a resolution of 0.5 m. To account for the landscape elevation, the Trimble TS635 tacheometer and the Leiсa DISTO D 510 rangefinder performed hypsometric measurements with a step of 1.0 m. Aerial photography was carried out by a remotely piloted aircraft (RPA) DJI Inspire 1 Pro, equipped with a Zenmuse 3X camera (a resolution of 3840×2160 pixels) with a spatial resolution of 5.7–7.8 cm/pixel (in different years).In the structure of frozen lacustrine-alluvial sediments, three GPR complexes are distinguished, corresponding to the active layer and frozen rocks with different amounts of schlieren, lenses and layers of texture-forming ice. The orthophoto map and tacheometric survey analysis showed that the destruction of frost mounds occurs from the second half of April to the first half of October. The most significant relief change is due to the thawing of icy pulverescent clayey silts. It leads to subsidence blocks in the ledge of the Sentsa River terrace. Lateral river thermoerosion also contributes to the frost mounds destruction. |
format |
Article in Journal/Newspaper |
author |
S. V. Alexeev A. S. Gladkov V. A. Pellinen L. P. Alexeeva A. A. Svetlakov |
author_facet |
S. V. Alexeev A. S. Gladkov V. A. Pellinen L. P. Alexeeva A. A. Svetlakov |
author_sort |
S. V. Alexeev |
title |
GPR surveys and RPA aerial photography using in conducting geocryological studies on the Oka plateau in the Eastern Sayan ridge |
title_short |
GPR surveys and RPA aerial photography using in conducting geocryological studies on the Oka plateau in the Eastern Sayan ridge |
title_full |
GPR surveys and RPA aerial photography using in conducting geocryological studies on the Oka plateau in the Eastern Sayan ridge |
title_fullStr |
GPR surveys and RPA aerial photography using in conducting geocryological studies on the Oka plateau in the Eastern Sayan ridge |
title_full_unstemmed |
GPR surveys and RPA aerial photography using in conducting geocryological studies on the Oka plateau in the Eastern Sayan ridge |
title_sort |
gpr surveys and rpa aerial photography using in conducting geocryological studies on the oka plateau in the eastern sayan ridge |
publisher |
Russian Academy of Sciences, Siberian Branch, Institute of the Earth's crust |
publishDate |
2022 |
url |
https://doi.org/10.5800/GT-2022-13-2s-0621 https://doaj.org/article/5c5c43acda7d4a2fac6d8cbf57a5e032 |
genre |
Ice permafrost |
genre_facet |
Ice permafrost |
op_source |
Геодинамика и тектонофизика, Vol 13, Iss 2s (2022) |
op_relation |
https://www.gt-crust.ru/jour/article/view/1390 https://doaj.org/toc/2078-502X 2078-502X doi:10.5800/GT-2022-13-2s-0621 https://doaj.org/article/5c5c43acda7d4a2fac6d8cbf57a5e032 |
op_doi |
https://doi.org/10.5800/GT-2022-13-2s-0621 |
container_title |
Geodynamics & Tectonophysics |
_version_ |
1766027823517007872 |