Open AccessUsing remote sensing and numerical modelling to quantify a turbidity discharge event in Lake Garda
Author(s) -
Nicola Ghirardi,
Marina Amadori,
Gary Free,
Lorenzo Giovannini,
Marco Toffolon,
Claudia Giardino,
Mariano Bresciani
Publication year - 2020
Publication title -
journal of limnology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.465
H-Index - 44
eISSN - 1723-8633
pISSN - 1129-5767
DOI - 10.4081/jlimnol.2020.1981
Subject(s) - environmental science , remote sensing , spillway , hydrology (agriculture) , event (particle physics) , turbidity , spatial variability , satellite imagery , computer modelling , numerical modeling , geology , oceanography , geotechnical engineering , computer science , physics , statistics , mathematics , computational science , quantum mechanics , geophysics , computer software
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.