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Reference : UMR5566-RAFALM-001
Workplace : TOULOUSE,TOULOUSE
Date of publication : Friday, October 09, 2020
Scientific Responsible name : Rafael Almar/Dennis Wilson/Jean-Marc Delvit
Type of Contract : PhD Student contract / Thesis offer
Contract Period : 36 months
Start date of the thesis : 16 November 2020
Proportion of work : Full time
Remuneration : 2 135,00 € gross monthly
Description of the thesis topic
Coastal regions are currently facing environmental and resource problems
aggravated by population pressure and overexploitation. The environmental context or
extreme events (floods, coastal erosion) combined with demographic pressure are a
limiting factor for coastal development. The general objective of this internship is to
improve the representation of sea state and subsequent coastal dynamics at the event scale.
In practice, direct measurements (wave buoys, CANDHIS network) remain costly and
difficult. On the other hand, models have been developed and implemented for both coastal
circulation and wave representation but are computationally costly and subject to large
uncertainties in coastal areas. The internship will investigate the possibilities to 1) derivate
sea states (waves) using optical images from regular basis satellites with global coverage
such as Sentinel-2 and 2) replace costly wave models to propagate from offshore deep
waters to the coast (incl. extreme sea level/setup). Using deep learning would represent an
efficient way to solve computationally costly wave observation and modelling in coastal
zones. The training will be conducted on a synthetic dataset of more than 12000 numerical
simulations of waves with random conditions and the application on Sentinel-2 images.
Constraints and risks
1/2 grant CNES
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