Field tests of photogrammetric evaluation technique of snow-glacial surface albedo

Zhuravskiy, D. M.; Журавский, Д М; Prokhorova, Uliana; Иванов, Б. В.; Yanjura, A. S.; Янжура, А С; Kuprikov, Nikita; Kurapov, M. V.

doi:10.31857/s0205-96142019418-28

Cited by 2 publications

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“…In particular, the UAV surveys played an important role in creating detailed mapping for local specific analysis. The verification of a technique to properly estimate the albedo of snow surfaces after photogrammetric data and exposure parameters obtained in UAV surveys images is discussed by Zhuravskiy et al (2019Zhuravskiy et al ( , 2020 [107,108], detailing their advantages and limitations. To better characterise the seasonal outburst floods on lakes in Broknes Peninsula, Larsemann Hills, Grigoreva et al (2021) [109] surveyed the structure of snow-ice dams with GPR and UAV.…”

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confidence: 99%

UAVs for Science in Antarctica

Pina

Vieira

2022

Remote Sensing

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Remote sensing is a very powerful tool that has been used to identify, map and monitor Antarctic features and processes for nearly one century. Satellite remote sensing plays the main role for about the last five decades, as it is the only way to provide multitemporal views at continental scale. But the emergence of small consumer-grade unoccupied aerial vehicles (UAVs) over the past two decades has paved the way for data in unprecedented detail. This has been also verified by an increasing noticeable interest in Antarctica by the incorporation of UAVs in the field activities in diversified research topics. This paper presents a comprehensive review about the use of UAVs in scientific activities in Antarctica. It is based on the analysis of 190 scientific publications published in peer-reviewed journals and proceedings of conferences which are organised into six main application topics: Terrestrial, Ice and Snow, Fauna, Technology, Atmosphere and Others. The analysis encompasses a detailed overview of the activities, identifying advantages and difficulties, also evaluating future possibilities and challenges for expanding the use of UAV in the field activities. The relevance of using UAVs to support numerous and diverse scientific activities in Antarctica becomes very clear after analysing this set of scientific publications, as it is revolutionising the remote acquisition of new data with much higher detail, from inaccessible or difficult to access regions, in faster and cheaper ways. Many of the advances can be seen in the terrestrial areas (detailed 3D mapping; vegetation mapping, discrimination and health assessment; periglacial forms characterisation), ice and snow (more detailed topography, depth and features of ice-sheets, glaciers and sea-ice), fauna (counting penguins, seals and flying birds and detailed morphometrics) and in atmosphere studies (more detailed meteorological measurements and air-surface couplings). This review has also shown that despite the low environmental impact of UAV-based surveys, the increasing number of applications and use, may lead to impacts in the most sensitive Antarctic ecosystems. Hence, we call for an internationally coordinated effort to for planning and sharing UAV data in Antarctica, which would reduce environmental impacts, while extending research outcomes.

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Section: Main Topic Specific Topic Referencesmentioning

confidence: 99%

UAVs for Science in Antarctica

Pina

Vieira

2022

Remote Sensing

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Turbulent heat exchange characterisics in sea ice ridges areas

Иванов

Уразгильдеева

Парамзин

et al. 2020

Problemy Arktiki i Antarktiki

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The studies of the features of turbulent heat exchange were carried out for the first time in domestic practice near ice ridge areas of sea ice using an unmanned aerial vehicle (UAV) as part of the expedition "Transarktika-2019" onboard the R/V “Akademik Tryoshnikov”. An original measuring complex designed in AARI, was used to assess the characteristics of the ice surface (ice ridges, flat areas of ice). This made it possible to obtain comparative estimates of the albedo and surface temperature of different morphometric structures of the sections of the ice field, where the expedition's ice camp was organized. Measurements of air temperature and wind velocity were carried in the atmospheric surface layer on flat snow-covered areas of sea ice out from the windward and leeward sides of the ridge in parallel with the UAV flights. As a result of the experiments, it was found that the ice ridges areas have a lower albedo and surface temperature compared to neighboring areas of flat sea ice on average. Turbulent heat fluxes from the windward side of the hummock ridge exceed similar values recorded from the leeward side under conditions of unstable stratification in the atmospheric surface layer and exceed the fluxes calculated for conditions of flat ice on the sections with absence of hummocks, on average. In total, the nature and intensity of turbulent heat conduction in the ice ridges area differs from the analogous values observed on the flat sea ice cover. It is possible that the assessment of heat conduction with the atmosphere requires a certain revision, against the background (within the conditions) of thin first-year ice increasing which is more prone to hummocking than multi-year ice.

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Field tests of photogrammetric evaluation technique of snow-glacial surface albedo

Cited by 2 publications

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UAVs for Science in Antarctica

UAVs for Science in Antarctica

Turbulent heat exchange characterisics in sea ice ridges areas

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