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...
| Published in: | E3S Web of Conferences |
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| Main Authors: | , , |
| Format: | Article in Journal/Newspaper |
| Language: | English French |
| Published: |
EDP Sciences
2021
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| Subjects: | |
| Online Access: | https://doi.org/10.1051/e3sconf/202133301007 https://www.e3s-conferences.org/articles/e3sconf/pdf/2021/109/e3sconf_rpers2021_01007.pdf https://doaj.org/article/408b3140b1d94c52a36ab384740c67d5 |
| 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. |
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