Inverse problem
What´s beneath the following flow pattern ? Drone zenithal view subsequently vectorized with LSPIV. You´ve got it; just this groyne when submerged flow begins !
Posts
Shallow Mixing Layer at Aragon-Ebro confluence
A rather complex process, which can lead to spectacular images of mixing eddies. Practical questions like: what´s the mixing length, the influence of each stream speed and width, and how do they change along the interface, can be derived for simple cases with math models.
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
Cabañas de Ebro, upstream
This is a particular village 30 Kms upstream Saragosse along the Ebro river, Google-Map , where we can observe a riverine island with its typical confluence pattern, and our computer LSPIV video processing:
Optical processing can assist to define bathymetry:
Shallow flows with relatively transparent water, captured by 4K camera drones and filtered by computer, can help to define the bathymetry without more expensive data acquisition. See this example nearby "Sotos del Ebro, Alfaro".
