ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences
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Articles | Volume V-3-2020
ISPRS Ann. Photogramm. Remote Sens. Spatial Inf. Sci., V-3-2020, 387–394, 2020
https://doi.org/10.5194/isprs-annals-V-3-2020-387-2020
ISPRS Ann. Photogramm. Remote Sens. Spatial Inf. Sci., V-3-2020, 387–394, 2020
https://doi.org/10.5194/isprs-annals-V-3-2020-387-2020

  03 Aug 2020

03 Aug 2020

USING TIME SERIES OF SENTINEL-1 IMAGES TO PRODUCE DRY BATHYMETRY OF RIVERS

P. Maillard P. Maillard
  • Universidade Federal de Minas Gerais, Dept of Geography, Belo Horizonte, MG 31270-901, Brazil

Keywords: River width, Sentinel-1, Hydrology, Dry bathymetry, Water surface

Abstract. A method is presented to produce river cross section profiles from a time series of Sentinel-1 images paired with water level data. Four programs are presented that generate river width data and cross section profiles from SAR or optical images. The programs generate a river bank and island width database with minimum manual intervention. Water level data from in situ stations are interpolated to match the width data and create elevation points from which the cross section profiles are produced. The method is fully described and tested on the São Francisco River in Brazil. The width data are plotted against discharge data to compare their progression. Over 1700 cross sections were produced and classified by their shape. Potential and limitations are presented.