Potential application of ERS-1 SAR data for estimating the Ticino braided river discharge

Mirco Boschetti; Roberto Colombo; Mario A. Gomarasca

doi:10.1117/12.332711

11 December 1998 Potential application of ERS-1 SAR data for estimating the Ticino braided river discharge

Mirco Boschetti, Roberto Colombo, Mario A. Gomarasca

Proceedings Volume 3496, Earth Surface Remote Sensing II; (1998) https://doi.org/10.1117/12.332711
Event: Remote Sensing, 1998, Barcelona, Spain

Abstract

In this study a relationship between water surface area and river discharge was derived by using multitemporal radar images in the central braided part of the Ticino River (Italy). Ticino River is the outlet of the Lake Maggiore (north-west Italy) and it streams for about 100 km before flowing into the Po River, the biggest river in Italy. The braided part of Ticino River is about 50% of the total length and its active flow increases or decreases in responding to river discharge. Ground measurement of discharge (Q) were related to satellite-derived effective width (We), where We is the water surface area within a braided reach divided by the reach length, showing a good correlation. Power functions were fitted through plots of We and Q and they represent satellite derived rating curves that can be helpful for the estimation of mean daily discharge by using satellite radar data. Those satellite-derived rating curves can be apply where the gauging station are either enough distributed, like in Ticino River, or impossible to set in order to predict the river discharge or in remote areas, where river discharge is not easily available.

Citation Download Citation

Mirco Boschetti, Roberto Colombo, and Mario A. Gomarasca "Potential application of ERS-1 SAR data for estimating the Ticino braided river discharge", Proc. SPIE 3496, Earth Surface Remote Sensing II, (11 December 1998); https://doi.org/10.1117/12.332711

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