Complex Geodetic Research in Ukrainian Antarctic Station “Academician Vernadsky” (Years 2002 - 2005, 2013-2014)

Tretyak, K.; Hlotov, Volodymyr; Holubinka, Yuriy; Marusazh, Kh.

doi:10.1515/rgg-2016-0012

Cited by 12 publications

(10 citation statements)

References 3 publications

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“…Decreasing surface volumes were detected from all surveys (Hlotov, 2008). The ice volume changes of the frontal southern and western parts of Galindez Island ice cap and southern part of Winter Island were determined as well indicating, for example, that the western part of Galindez Island ice cap has lost 122,800 m 3 of ice for the period of 2002-2014 (Tretyak et al, 2016). The monitoring of the internal changes of some ice caps on the Argentine Islands using ground-penetrating radar was started in 2017 and continues nowadays (Chernov, 2017;.…”

Section: Introduction and Study Sitementioning

confidence: 81%

“…We recognize especially the use of UAV generated products for monitoring purposes of environmental changes. Thus, we provide the first very high-resolution orthophoto maps and DSMs of the largest Argentine Islands, which are partially covered by ice caps and experiences the substantial ice surface changes (Tretyak et al, 2016) that must be monitored in future.…”

Section: Discussionmentioning

confidence: 99%

“…Only during the Ukrainian expeditions (after 1996) creation of large scale plans of the Argentine Islands, mostly using photogrammetric methods, as well ice surface mass balance measurements were performed (Cisak et al, 2008;Greku et al, 2006;Hlotov, 2008;Hlotov et al, 2003;Levashov et al, 2004;Litvinov et al, 2006;Tretyak et al, 2016). Decreasing surface volumes were detected from all surveys (Hlotov, 2008).…”

Section: Introduction and Study Sitementioning

confidence: 99%

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High-resolution orthophoto map and digital surface models of the largest Argentine Islands (the Antarctic) from unmanned aerial vehicle photogrammetry

et al. 2020

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This study presents the first high-resolution orthophoto maps and digital surface models (DSMs) of the largest Argentine Islands, West Antarctica. Aerial surveys with small unmanned aerial vehicle (UAV) were performed in Austral summer, 2018, taking 10,041 aerial photographs. Accuracy requirements were ensured using ground control points (GCPs). A resolution of 3.4 and 6.8 cm/px of orthomosaics and DSMs is reached on average, and the RMS reprojection error is 0.22 m on average. We report the morphometric parameters of surveyed islands and discuss issues related to accuracy and the usage of UAVs in polar conditions. This study demonstrates that small and low cost UAVs can be successfully used in harsh polar conditions to obtain accurate orthomosaics and DSMs of mainly glaciated terrain. We provide all generated materials in full resolution available in a scientific data repository that could be used for the monitoring of ice cap changes, vegetation cover, and wildlife populations.

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Section: Introduction and Study Sitementioning

confidence: 81%

Section: Discussionmentioning

confidence: 99%

Section: Introduction and Study Sitementioning

confidence: 99%

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High-resolution orthophoto map and digital surface models of the largest Argentine Islands (the Antarctic) from unmanned aerial vehicle photogrammetry

et al. 2020

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“…Cisak et al (2008) calculated that since 2000 the Galindez Island ice cap has lost 2-3% of its volume in general, which corresponds to 20 000 m 3 year -1 . Later, based on created digital terrain models, Tretyak et al (2016) estimated that the western part of the Galindez Island ice cap had lost 12 000 m 3 year -1 in volume, while the southern part had lost 9150 m 3 year -1 in the timespan from 2002 until 2014. Over the same period, the southern part of the ice cap on Winter Island had lost 8800 m 3 year -1 .…”

Section: Previous Workmentioning

confidence: 99%

“…After 1996, when the former British Faraday station (now called Akademik Vernadsky) was transferred to Ukraine, some new methods were used to study the ice caps of the Argentine Islands. Ground-penetrating radar and vertical electrical resonance sounding methods were used to measure the thickness of the Galindez Island ice cap (Levashov et al 2004, Bakhmutov et al 2006), and monitoring of the frontal parts of the ice caps on Galindez and Winter islands was started in 2002 using the photogrammetric method (Hlotov et al 2003, Cisak et al 2008, Tretyak et al 2016). Phototheodolite measurements were taken on Galindez Island (Hlotov et al 2003), and terrestrial laser scanning was used for the first time for observation of the termination line of the ice caps on Galindez and Winter islands in 2014 (Tretyak et al 2016).…”

Section: Introductionmentioning

confidence: 99%

Subglacial topography and thickness of ice caps on the Argentine Islands

et al. 2019

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This study presents the first subglacial topography and ice thickness models of the largest ice caps of the Argentine Islands, Wilhelm Archipelago, West Antarctica. During this study, ground-penetrating radar was used to map the thickness and inner structure of the ice caps. Digital surface models of all studied islands were created from aerial images obtained with a small-sized unmanned aerial vehicle and used for the construction of subglacial topography models. Ice caps of the Argentine Islands cover ~50% of the land surface of the islands on average. The maximum thickness of only two islands (Galindez and Skua) exceeds 30 m, while the average thickness of all islands is only ~5 m. The maximum ice thickness reaches 35.3 m on Galindez Island. The ice thickness and glacier distribution are mainly governed by prevailing wind direction from the north. This has created the prominent narrow ice ridges on Uruguay and Irizar islands, which are not supported by topographic obstacles, as well as the elongated shape of other ice caps. The subglacial topography of the ice caps is undulated and mainly dependent on the geological structure and composition of magmatic rocks.

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Recent local geodynamic processes in the Penola Strait_Lemaire Channel fault area (West Antarctica)

Savchyn¹

2021

Acta Geodynamica Et Geomaterialia

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We present the crustal deformation field in the Penola Strait – Lemaire Channel fault area (West Antarctica), based on the analysis of the 5 seasonal cycles of static GNSS survey. This 5 GNSS campaigns were conducted with approximately a 16-year interval from 2003 to 2019. The analyses indicate that average linear velocities of horizontal movements are multidirectional but no larger than 1 – 2 mm/yr. Average linear velocities of vertical movements are no larger than ±3 mm/yr. In the present work scheme of vertical and horizontal movements has been drawn out. The obtained results correlate well with the movements of the surrounding GNSS stations. Based on the analysis of spatial distribution of the Earth’s surface dilatation velocity the zones of extreme compression and expansion values were revealed. The analyses of spatial distribution of the Earth’s surface total shear velocity indicate that the studied region is horizontally heterogeneous. Based on the analysis of obtained results, a new kinematic model of fault area was developed. The possibility of using static GNSS survey to study recent local geodynamic processes in Antarctica has been demonstrated.

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Complex Geodetic Research in Ukrainian Antarctic Station “Academician Vernadsky” (Years 2002 - 2005, 2013-2014)

Abstract: In this paper is given an information about complex geodetic research in

Cited by 12 publications

References 3 publications

High-resolution orthophoto map and digital surface models of the largest Argentine Islands (the Antarctic) from unmanned aerial vehicle photogrammetry

High-resolution orthophoto map and digital surface models of the largest Argentine Islands (the Antarctic) from unmanned aerial vehicle photogrammetry

Subglacial topography and thickness of ice caps on the Argentine Islands

Recent local geodynamic processes in the Penola Strait_Lemaire Channel fault area (West Antarctica)

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