TY - JOUR ID - 83106 TI - Qualitative evaluation of surface water resources using satellite images in Seymareh dam reservoir JO - Iranian journal of Ecohydrology JA - IJE LA - en SN - 2423-6098 AU - moshayedi, zoha AU - Jahangir, Mohammad Hossein AD - University of Tehran AD - Associate Professor, Faculty of New Sciences & Technologies, University of Tehran Y1 - 2021 PY - 2021 VL - 8 IS - 4 SP - 925 EP - 939 KW - Water quality monitoring KW - remote sensing KW - Sentinel-2 KW - Landsat-8 KW - Seymareh dam reservoir DO - 10.22059/ije.2021.328294.1530 N2 - Due to the advances made in remote sensing technology, collecting information on the quality of surface water resources by this technology, while reducing the cost and time of traditional sampling, can cover all surface water areas. To monitor. In this study, the capability of Sentinel-2 and Landsat-8 satellite images to estimate the concentration of water quality parameters including acidity, electrical conductivity, total soluble solids, alkalinity and surface water temperature were investigated. First, the Sentinel-2 and Landsat-8 satellite images were pre-processed and then the appropriate bands were determined to identify a significant relationship between the values of each water quality parameter and the images were determined using linear regression and their accuracy was calculated for the actual values. The results show the superiority of Sentinel-2 images with Pearson coefficient, standard error and RMSe for PH parameter equal to 0.58, 0.28 and 0.29, EC equal to 0.847, 78.7 and 77.22, TDS equal to 0.895, 45.8 and 44.37 and for the alkalinity parameter only through Landsat-8 images with Pearson coefficient, standard error and RMSe equal to 0.473, 22 and 21.8, respectively. Both satellite images can be used for the water surface temperature parameter due to the high Pearson coefficient. These values are 0.871, 2.9 and 2.85 for Landsat-8 and 0.752 for Sentinel-2, respectively. 0, 14.4 and 4.06. UR - https://ije.ut.ac.ir/article_83106.html L1 - https://ije.ut.ac.ir/article_83106_f28ae39ffa29562fcb097a418b3ab507.pdf ER -