Usefulness of Sentinel-2 visible light satellite photos for surveys of hydrodynamic phenomena in Polish Carpathian storage reservoirs
Authors:
- Paweł S. Hachaj,
- Katarzyna Kołodziejczyk
Abstract
The aim of the research presented in this paper was the recognition of potentials and drawbacks of visible light photos taken by the Sentinel-2 satellites as a source of data for hydrodynamic issues regarding dammed reservoirs located in the Polish Carpathian foothills. The authors analyzed the photos of five reservoirs: Goczałkowice, Tresna, Dobczyce, Czorsztyn and Solina. Depending on the object’s geographic location, one can expect one or two photos taken during each 5-day period. No more than 1/5 of the taken photos of the given locations contain a non-obscured view of the water bodies. Visibility varies throughout the year along with the expected clear sky percentage; and the probability of obtaining a clear picture is lower than this value. In the Polish Carpathians, the best visibility occurs in August, while the worst in December. The chance of getting a clear view is lower during high discharge periods than in low discharge ones. In the clear photos the authors identified density currents of different nature: turbidity, reverse turbidity (i.e. clear water entering a turbid area), eutrophic and thermal. The currents can also be seen as sub-glacial ones. The shapes of the visible currents can be used for calibration and validation of hydrodynamic numerical models of the reservoirs. The authors obtained a good accordance between the shapes of the currents visible on the photos and the water velocity field predicted by a numerical simulation with the FESWMS model for the hydrological and meteorological input variables set to follow the actual conditions that day.
- Record ID
- CUTd150d2f295ed4bf0be6cdcddcf116931
- Publication categories
- ;
- Author
- Journal series
- Carpathian Journal of Earth and Environmental Sciences, ISSN 1842-4090, e-ISSN 1844-489X
- Issue year
- 2020
- Vol
- 15
- No
- 1
- Pages
- 197-210
- Other elements of collation
- fot.; mapy; rys.; schem.; tab.; wykr.; Bibliografia (na s.) - 207-209; Oznaczenie streszczenia - Abstr.; Numeracja w czasopiśmie - Vol. 15, No. 1
- Keywords in English
- Sentinel-2, satellite images, storage reservoir, turbidity current, density current, sub-glacial flow
- DOI
- DOI:10.26471/cjees/2020/015/122 Opening in a new tab
- URL
- http://www.cjees.ro/viewTopic.php?topicId=848 Opening in a new tab
- Language
- eng (en) English
- License
- Score (nominal)
- 40
- Additional fields
- Indeksowana w: Web of Science, Scopus
- Uniform Resource Identifier
- https://cris.pk.edu.pl/info/article/CUTd150d2f295ed4bf0be6cdcddcf116931/
- URN
urn:pkr-prod:CUTd150d2f295ed4bf0be6cdcddcf116931
* presented citation count is obtained through Internet information analysis, and it is close to the number calculated by the Publish or PerishOpening in a new tab system.