Sentinel-1 satellite radar images: a new source of information for study of river channel dynamics on the Lower Vistula River, Poland
Authors:
- Klaudia Kryniecka,
- Artur Magnuszewski,
- Artur Radecki-Pawlik
Abstract
The amount of sediments transported by a river is difficult to estimate, while this parameter could influence channel geometry. It is possible to derive the bedload transport rate per unit width of the river channel by measuring the migration distance of bedform profiles over time and thickness of bedload layer in motion. Other possible methods include instrumental measurements using bedload traps and empirical formulas. It is possible to use remote-sensing techniques to measure the dynamics of bedform movements and geometries. Landsat images and aerial photographs have been used for this. A new source of remote-sensing information is radar satellite images. Sentinel-1 images have a temporal resolution of 2–3 days and spatial resolution of 25 m at middle latitudes, which make them usable on large rivers. The research area is the 814–820 km reach of the Lower Vistula River, where seven alternate sandbars were selected. The bank lines of the sandbars were delineated on Sentinel-1 images sensed during two low-flow periods of 4 August–26 September 2018 and 1 July–31 August 2019, when discharges at low flow were similar. From water stage observations at gauges, water elevations were assigned to every bank line of the alternate sandbars. The following morphometric parameters were calculated: alternate sandbar centers, volumes and longitudinal profile. Average daily movement of the sandbars in the period 4 August 2018–1 July 2019 was calculated as 0.97 m· day−1 . A similar alternate sandbar movement velocity was obtained from a study of Sentinel-2 optical satellite images and hydro-acoustic measurements on the Lower Vistula River. Having depth of bedload in motion and alternate sandbar shift velocities, it was possible to calculate the rate of bedload transport according to the Exner approach formula. Rate of bedload transport was estimated as qb = 0.027 kg· s −1 · m−1 . This study shows a novel use of Sentinel-1 images to study the 3D geometry and movement rate of sandbars.
- Record ID
- CUT6a4c110eaac944529545a2210604e94c
- Publication categories
- ;
- Author
- Journal series
- Remote Sensing, ISSN , e-ISSN 2072-4292, Biweekly
- Issue year
- 2022
- Vol
- 14
- No
- 5
- Pages
- [1-16]
- Article number
- 1056
- Other elements of collation
- fot.; mapy; rys.; tab.; wykr.; Bibliografia (na s.) - 14-16; Bibliografia (liczba pozycji) - 48; Oznaczenie streszczenia - Abstr.; Numeracja w czasopiśmie - Vol. 14, Iss. 5
- Substantive notes
- Typ publ.: Communication
- Keywords in English
- Lower Vistula River, alternate sandbars, Sentinel-1 radar satellite images
- ASJC Classification
- DOI
- DOI:10.3390/rs14051056 Opening in a new tab
- URL
- https://www.mdpi.com/2072-4292/14/5/1056 Opening in a new tab
- Language
- eng (en) English
- License
- Score (nominal)
- 100
- Score source
- journalList
- Score
- Publication indicators
- Additional fields
- Indeksowana w: Web of Science, Scopus
- Uniform Resource Identifier
- https://cris.pk.edu.pl/info/article/CUT6a4c110eaac944529545a2210604e94c/
- URN
urn:pkr-prod:CUT6a4c110eaac944529545a2210604e94c
* 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.