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Publications associées (185)

Effects of non-uniform vertical constituent profiles on remote sensing reflectance of oligo- to mesotrophic lakes

Alfred Johny Wüest, Damien Bouffard, Vincent Maurice Nouchi

We investigate the impact on remote sensing reflectance by the vertical non-uniformities of water constituents. Reflectance simulated for 210 pairs of in situ measured chlorophyll-a and turbidity profiles (z = 0–20 m) from Lake Geneva are compared to simul ...

2018

Nuove ecologie alpine: industrializzazione e costruzione della città-territorio

Roberto Sega

This research study offers a reflection on the Alpine urban condition through the observation of the spaces of production. Departing from the premise that the tourist economy cannot be the only possible horizon for Alpine development, this thesis reflects ...

EPFL2018

Obstacle detection for lake-deployed autonomous surface vehicles using RGB imagery

David Andrew Barry, Philippe Olivier Paccaud

We describe and test an obstacle-detection system for small, lake-deployed autonomous surface vehicles (ASVs) that relies on a low-cost, consumer-grade camera and runs on a single-board computer. A key feature of lakes that must be accounted for is the fre ...

2018

Lake Geneva: A natural laboratory for transport processes

David Andrew Barry, Ulrich Lemmin, Damien Bouffard, Andrea Cimatoribus

Dynamics in Lake Geneva are analysed in view of recent observational and numerical advances. The classical linear internal wave view of Lake Dynamics is complemented by the description of near-shore, vortex-like nonlinear motions. The development of these ...

2017

Chavalon s'ouvre au public. Réhabilitation d'une ancienne centrale thermique, de son téléphérique et de son quartier d'habitation, Vouvry (VS)

La centrale thermique de Chavalon, construite en altitude par préoccupation environnementale, domine la vallée du Rhône et est visible dans un rayon de 20 km, de Bex à Vevey. Construite en 1965, elle fermera définitivement ses portes en 1999, après trente- ...

2017

Testing turbulence theories in the ocean: insights from state-of-the-art observations

Andrea Cimatoribus

During the last decade, environmental flows have been measured with a growing set of instruments, which can now offer relatively high resolution in space and time. This growing amount of data can analysed following a "statistical approach to turbulence", r ...

2017

Elevated Concentrations of 4-Bromobiphenyl and 1,3,5-Tribromobenzene Found in Deep Water of Lake Geneva Based on GCxGC-ENCI-TOFMS and GCxGC-mu ECD

Jeremy Samuel Arey, Saer Samanipour, Petros Dimitriou Christidis, Deedar Nabi

We quantified the concentrations of two little-studied brominated pollutants, 1,3,5-tribromobenzene (TBB) and 4-bromobiphenyl (4BBP), in the deep water column and sediments of Lake Geneva. We found aqueous concentrations of 625 +/- 68 pg L-1 for TBB and 66 ...

Amer Chemical Soc2017

Vers des chantiers furtifs ; Etude préliminaire en matière d'acceptabilité et de perceptions des chantiers en contexte urbain

Vincent Kaufmann, Marc Antoine Messer

Le laboratoire de Sociologie urbaine (LaSUR) à l’Ecole Polytechnique Fédérale de Lausanne (EPFL) et le collectif Urbz à Genève ont été mandatés conjointement en octobre 2016 par Colas SA, domiciliée à Boulogne-Billancourt (F), afin d’identifier les thémati ...

2017

A one-week transdisciplinary course on walking for 2nd-year students of architecture and engineering

Emmanuel Pierre Jean Ravalet, Derek Pierre Christie, Dominique Von Der Mühll

Walking is often absent from the curriculum of architects or civil engineers, who are ultimately responsible for designing urban space which may or may not be favourable to walking. There is therefore a need for courses to help future architects and engine ...

2017

Optimizing the parameterization of deep mixing and internal seiches in one-dimensional hydrodynamic models: a case study with Simstrat v1.3

Alfred Johny Wüest, Damien Bouffard, Robert Vincent Schwefel, Adrien Gaudard, Carl Love Mikael Råman Vinnå, Martin Schmid

This paper presents an improvement of a one-dimensional lake hydrodynamic model (Simstrat) to characterize the vertical thermal structure of deep lakes. Using physically based arguments, we refine the transfer of wind energy to basin-scale internal waves ( ...

Copernicus Gesellschaft Mbh2017

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