Sun glitter at Gallur:
A good example of sun glitter while the drone raises and films oriented towards the sun, however it can be helpful to determine a correlation between surface reflectance and roughness, and related flow speed.
Monitoring plastic litter and debris:
Drones make easier to recognize surface speed patterns and debris storage areas in order to clean up plastic litter , as this image of Alcala de Ebro groynes shows. See more at The Ocean Clean Up project and https://doi.org/10.3390/rs11172045
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