Voici une sélection des posters scientifiques associées au projet GéoSAS :

  • Dallery D., Squividant H., De Lavenne A., Launay J., Cudennec C. : SIMFEN, An end-user friendly web service for geomorphology-based hydrological Prediction in Ungauged Basins.  International Union of Geodesy and Geophysics 27th IUGG General Assembly Montreal 2019 (Poster)

A consolidated geomorphology-based approach for discharge Prediction in Ungauged Basins (PUB) through deconvolution of discharge signals from gauged donor catchments, their transposition and their convolution towards target outlets, has been made available online to end users through a Web Processing Service (WPS) for the synoptic peninsular region of Brittany, France. In the spirit of hydrological services, the SIMFEN WPS allows anyone to execute the hydrological modelling package transfR online through 1) Open Geospatial Consortium interoperability (OGC) standards, 2) collection and use of public hydrometric data, 3) connection to the pre-existing MNTSurf WPS for geomorphometric analysis, 4) visualisation using a collaboratively developed Mviewer and 5) innovative WPS workflows. The ability to model discharge series at any ungauged outlet of the synoptic region is offered to specialists of other disciplines, non-modeller water practitioners and interested citizens to support interdisciplinarity, water monitoring and management, and related science-society-policy debates and actions.

  • L. Beff, Y. Lambert, H. Squividant, B. Lemercier, Y. Benchekroun, S. Vincent, R. Béra, G. Le Hénaff, P. Pichelin, P. Germain, T. Morvan – A web application to estimate soil Nitrogen mineralization available for crops in Brittany. 20th Nitrogen Workshop, June 25-27 2018, Rennes. (Poster)

In Brittany, Nitrogen (N) fertilization is an important environmental challenge. It is thus essential to well predict the N mineralization of soil organic matter.  The « regional Mh project  » allowed to establish experimental references and to develop a new predictive model of the mineralization of the nitrogen of soil organic matter (Mh) which considers the organic and cropping history, soil characteristics and the climate.
But how can this be made available to farmers?
By creating a WEB tool where they will be able to identify the different types of soil of their farm and the associated properties necessary for the calculation of the mineralization Mh, calculate an indicator of crop history that depends on rotations and organic inputs and calculate Mh with the new predictive model according to the climate of the farmland.

  • J. Barreau, A. Battais, R. Béra, L. Garnier, C. Le Carlier de Veslud, G. Le Hénaff, F. Le Moal, J. Nabucet, P. Pichelin, Y. Rantier, H. Squividant, A. Thomas – Le Service de Gestion des Données Numériques de l‘OSUR : valoriser les données en environnement – Journées nationales du DEVeloppement logiciel (JDEV 2017), Marseille, juillet 2017. (Poster)


  • Squividant H., Béra R., Ruiz L., Aurousseau P., Cudennec C. Online watershed boundary delineation: sharing models through Spatial Data Infrastructures. 3rd Remote Sensing and Hydrology Symposium. 3rd International Conference of GIS/RS in Hydrology, Water Resources and Environment. Guangzhou, China, 24-27 August 2014. (Poster)

The proposal in this poster is to make accessible the hydrology analysis tools that were developed by our research team in the past years through an interoperable Spatial Data Infrastructure. To this aim we chose to develop add-ons for the geOrchestra OGC-compliant platform. Such add-ons trigger algorithms and retrieve their output in real time through OGC standard WPS. We then introduce a watershed WPS add-on and its functioning modes. In so doing we exemplify the fact that the use of OGC standards make it straightforward (and transparent to the user operating a common web browser) to remotely trigger a process on a distant server, then apply it to distant data present on a remote cartographic server, and drop the outcome onto a third-party cartographic server while visualizing it all on a browser.