Using remote sensing and numerical modelling to quantify a turbidity discharge event in Lake Garda

Turbidity discharge event in Lake Garda from satellite and numerical modelling

Abstract

We investigate the effect of the Adige-Garda spillway opening on the 03/03/2020 on Lake Garda using numerical modelling and maps of Suspended Particulate Matter (SPM) concentration. SPM maps are obtained from Sentinel-2 images processed using the BOMBER bio-optical model. Three satellite images are examined: 28/02/2020, 04/03/2020 and 07/03/2020. Maps indicate a significant increase in SPM concentrations, especially in the northern part of the lake close to the hydraulic tunnel outlet. Results are consistent with the modelled flow field. Remote sensing effectively captures the event’s spatial and temporal variation, while numerical modelling explains and corroborates the observed patterns.

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Author Biography

Marina Amadori, Institute for Electromagnetic Sensing of the Environment, National Research Council, Milan

Department of Civil, Environmental and Mechanical Engineering (DICAM), University of Trento

Published
2020-10-01
Info
Issue
Section
Short Communication
Edited By
Diego Fontaneto, CNR IRSA, Verbania, Italy
Keywords:
Adige-Garda spillway, SPM concentration, water quality monitoring, Sentinel-2, WRF Delft3D, atmosphere-lake simulation
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How to Cite
1.
Ghirardi N, Amadori M, Free G, Giovannini L, Toffolon M, Giardino C, Bresciani M. Using remote sensing and numerical modelling to quantify a turbidity discharge event in Lake Garda: Turbidity discharge event in Lake Garda from satellite and numerical modelling . J Limnol [Internet]. 2020Oct.1 [cited 2020Oct.24];. Available from: https://jlimnol.it/index.php/jlimnol/article/view/jlimnol.2020.1981