Name
Title | ||
|---|---|---|
Evaluation of multi-resolution satellite sensors for assessing water quality and bottom depth of Lake Garda. |
Abstract | ||
|---|---|---|
In this study we evaluate the capabilities of three satellite sensors for assessing water composition and bottom depth in Lake Garda, Italy. A consistent physics-based processing chain was applied to Moderate Resolution Imaging Spectroradiometer (MODIS), Landsat-8 Operational Land Imager (OLI) and RapidEye. Images gathered on 10 June 2014 were corrected for the atmospheric effects with the 6SV code. The computed remote sensing reflectance (R-rs) from MODIS and OLI were converted into water quality parameters by adopting a spectral inversion procedure based on a bio-optical model calibrated with optical properties of the lake. The same spectral inversion procedure was applied to RapidEye and to OLI data to map bottom depth. In situ measurements of R-rs and of concentrations of water quality parameters collected in five locations were used to evaluate the models. The bottom depth maps from OLI and RapidEye showed similar gradients up to 7 m (r = 0.72). The results indicate that: (1) the spatial and radiometric resolutions of OLI enabled mapping water constituents and bottom properties; (2) MODIS was appropriate for assessing water quality in the pelagic areas at a coarser spatial resolution; and (3) RapidEye had the capability to retrieve bottom depth at high spatial resolution. Future work should evaluate the performance of the three sensors in different bio-optical conditions. |
Year | DOI | Venue |
|---|---|---|
2014 | 10.3390/s141224116 | SENSORS |
Keywords | Field | DocType |
satellite remote sensing,Lake Garda,aquatic optics,remote sensing reflectance,fieldwork activities | Pelagic zone,Satellite,Moderate-resolution imaging spectroradiometer,Inversion (meteorology),Remote sensing,Operational land imager,Reflectivity,Image resolution,Water quality,Physics | Journal |
Volume | Issue | ISSN |
14 | 12.0 | 1424-8220 |
Citations | PageRank | References |
8 | 0.90 | 8 |
Authors | ||
8 | ||
Name | Order | Citations | PageRank |
|---|---|---|---|
| Claudia Giardino | 1 | 27 | 9.02 |
| Mariano Bresciani | 2 | 34 | 9.61 |
| Ilaria Cazzaniga | 3 | 8 | 0.90 |
| Karin Schenk | 4 | 8 | 0.90 |
| Patrizia Rieger | 5 | 8 | 0.90 |
| Federica Braga | 6 | 10 | 4.28 |
| Erica Matta | 7 | 11 | 2.29 |
| Vittorio E. Brando | 8 | 82 | 18.41 |