FUNDAMENTAL STUDY ON A MEASUREMENT METHOD OF RIVER TURBIDITY USING MULTISPECTRAL DATA

Abstract

 In this study, we investigated the uses of multispectral cameras and satellite data with the aim of developing river turbidity measurement methods for various scales. As a result, it was found that the turbidity estimation using the same turbidity estimation equations is possible because the turbidity reflectances obtained from the multispectral cameras and satellite data are almost the same. Furthermore, the near-infrared wavelengths showed the possibility of constructing a turbidity estimation formula applicable to actual rivers from experimental data at near-infrared wavelengths. On the other hand, it was found that the field observation data is necessary because the red wavelength is affected by the water depth.