Arctic lakes thickness measurement in the Lena River delta based on the Sentinel-1 observations

In this paper, we investigate the possibilities of ice thickness remote sensing on freshwater lakes based on Sentinel-1 observations. Fr. was selected as a test site. Kurungnakh Island, located in the Lena River delta, was selected as a test site, where 10 lakes with floating and grounded ice were s...

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Bibliographic Details
Published in:E3S web of conferences 2021-01, Vol.333, p.1007
Main Authors: Leskova, Yuliya, Muzalevskiy, Konstantin, Ruzicka, Zdenek
Format: Article
Language:English
Subjects:
Air temperature
Backscattering
Coefficients
Freshwater ice
Freshwater lakes
Horizontal polarization
Ice
Ice cover
Ice thickness
Lakes
Linear functions
Polar environments
Radar data
Remote sensing
Rivers
Thickness measurement
Weather forecasting
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Summary:In this paper, we investigate the possibilities of ice thickness remote sensing on freshwater lakes based on Sentinel-1 observations. Fr. was selected as a test site. Kurungnakh Island, located in the Lena River delta, was selected as a test site, where 10 lakes with floating and grounded ice were selected. For the test lakes, the time series of backscatting coefficients measured by Sentinel-1 at horizontal-horizontal polarization (EW mode) and at an angle of 18-20 from September 2015 to June 2017 were analyzed. The average lakes ice thickness was estimated based on the Lebedev’s model and air temperature according to the European Center for Medium-Range Weather Forecasts (ECMWF ERA5). It is shown that, the dependence between backscattering coefficient and ice thickness (120-140 cm) can be described a linear function (with a standard deviation of 13.5-25.3 cm and a determination coefficient of 0.70-0.79). The preliminary studies shows that the Sentinel-1 radar data is promising for remote sensing of ice thickness on freshwater arctic lakes.
ISSN:2267-1242
2555-0403
2267-1242
DOI:10.1051/e3sconf/202133301007