The H+ observation service was created in 2002 with following missions:
The first goal of the H+ observation service is to maintain and coordinate a network of experimental sites capable of providing data – including chronicles or data on long term experiments – for the characterisation, quantification and modelling of water, element and energy transfers in underground aquifers.
The coupling between measurements, theories, and models is a fundamental goal of the H+ observation service. The observatory aims to create a long-term relation between research teams interested in the theoretical, numerical or experimental aspects of transfers in heterogeneous media.
The H+ observation service also has the task of establishing a partnership between fundamental research, training and operational partners. Training activities are organised on the exploitation of the resource and the prevention of environmental risks.
The H+ database includes the data acquired on the sites of H+ National observation service:
Description Manager of the Auverwatch site: Hélène Celle-Jeanton The AUVERWATCH (AUVERgne WATer CHemistry) project aims at the quantitative and qualitative follow-up of characteristic water masses in Auvergne in order to observe the long-term evolution of these hydrosystems depending on anthropogenic modifications and climatic change. Four hydrogeological analogues have been selected, including rainfall, alluvial hydrosystem, volcanic […]
Description Manager of the Larzac site: Cédric Champollion The Durzon site is located on a karstic aquifer with an area of 100 km2 which supplies the Durzon Spring (average discharge 1.4 m3/s). This spring provides a natural supply of drinking water to the Aveyron portion of Larzac. The site is equipped to monitor the discharge […]
Description Manager of the LSBB site: Naomi Mazzilli Scientific Goals In the heart of the karstic massif of Fontaine-de-Vaucluse, LSBB enables research to be undertaken at scales that are usually unobtainable, ranging from flowing fractures (61 currently) to a continuum of 14,000 m2 (beneath 30 to 519 m of cover rocks), with everything in between, […]
Managers of the Poitiers site: Jacques Bodin, Pierre Fischer, Gilles Porel Context and scientific objectives The Poitiers Hydrogeological Experimental Site (HES) was developed by the IC2MP/Hydrasa team (UMR CNRS 7285) as part of the National Network of Hydrogeological Sites (SNO H+) and the ‘EAUX’ programs of the former Poitou-Charentes region (CPER 2002-2006 and 2007-2013). Located […]
Description Scientific manager of the Ploemeur-Guidel site: Eliot Chatton Technical manager of the Ploemeur-Guidel site: Nicolas Lavenant The Ploemeur site (Morbihan) is located on an aquifer in fractured crystalline bedrock; since 1991 it has supplied one million m3 of drinking water annually to a town of 20,000 inhabitants. The chemical quality of the water extracted […]
The first eLTER scientific conference will be held in Tampere, Finland from 23 to 27 June 2025.Topics will range from socio-ecology to hydrology, biodiversity to biogeochemistry.The call for workshops ran from April 1 to June 14, 2024, and feedback will be given at the end of June.The call for abstracts will open in October 2024 […]
The 3rd OZCAR-TERENO conference “Advancing Critical Zone science” will take place from 29 September to 2 October 2025 at the FIAP in Paris. The conference will take place over 3 days, with a visit to the Orgeval catchment area on 29 September. The conference will combine keynotes in the morning with parallel sessions and poster […]
The annual TERRA FORMA project meetings will be held from June 2 to 5, 2025 in Lorient and on the Guidel site. These meetings will provide an opportunity to share a summary of the 3rd year of the project, to continue discussions on cross-functional issues, and to launch the deployment phase on pilot sites. You […]