Band ratio model for remote estimating the water quality parameters in small inland water bodies based on Landsat ETM+ data
ČlánekOtevřený přístuppeer-reviewedpublishedSoubory
Datum publikování
2018
Vedoucí práce
Oponent
Název časopisu
Název svazku
Vydavatel
University of Pardubice
Abstrakt
This work tries to explore how the remote sensing could be used in monitoring of selected
water quality (WQ) parameters in small inland water bodies. The respective models to
estimate the water quality parameters were proposed based on the Landsat 7 ETM+ images
taken in 6 samplings from May 2012 to September 2014. The images used were scenes of
WRS-2, path and row 191/25, as well as 190/25, respectively. Samples were taken from
13 water bodies, from which 9 water bodies (20–90 Ha) were used in modelling (and some
removed due to clouds and imagery gaps). The WQ parameters were chlorophyll-a
(Chl-a), Total Carbon (TC), Total Organic Carbon (TOC), Total Nitrogen (TN),
Temperature (T), and Secchi Disk Depth (SDD). The 3 × 3 moving average-window
technique with a water-only-mask approach was used in order to limit the process toward
the water areas only. The best models based on the surface reflectance (T based on
brightness temperature [K]) showed a correlation r2 between 0.78 and 0.90 and NRMSE
between 16.6 % and 8.0 %, respectively, for all the water quality indicators. This has proved
that all the parameters can be remotely estimated. The models and workflow scheme
created are intended to help to institutions mandated in the monitoring of water bodies.
Rozsah stran
p. 167 - 185
ISSN
1211-5541
Trvalý odkaz na tento záznam
Projekt
Zdrojový dokument
Scientific papers of the University of Pardubice. Series A, Faculty of Chemical Technology. 24/2018
Vydavatelská verze
Přístup k e-verzi
open access
Název akce
ISBN
978-80-7560-167-4
Studijní obor
Studijní program
Signatura tištěné verze
Umístění tištěné verze
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Klíčová slova
landsat, remote sensing, algorithms, model, water quality, water monitoring