Reservoir methane release in Northern Thailand

From 26 October to 2 November 2018, in situ measurements of dissolved methane concentrations were carried out in the water column of the Maethang irrigation reservoir by three scientists from the iEES Paris joint research unit (Sylvain Huon, Véronique Vaury, and Jean-Louis Janeau). Water and gas samples were also collected to perform stable carbon isotope measurements and control the reliability of in situ measurements by Frédéric Guérin at the GET laboratory in Toulouse. These data, together with the monitoring of environmental parameters in the water column and the analysis of 92 sediment cores recovered in February 2018, will help to better constraint the extent of carbon storage in bottom lake sediments with respect to greenhouse gas emissions in a representative of many (over 300) agricultural reservoirs of Thailand. Linking carbon cycling with land use and management on the adjacent watershed, will also support solutions involving users and managers for a sustainable management of water resources.

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2022 long-term missions in Lao PDR

After almost three years of travel restrictions in Lao PDR, Olivier Ribolzi (IRD GET), Henri Robain (IRD iEES Paris), and Laurie Boithias (CNAP GET) could go to both Vientiane and Luang Prabang for a 2-month stay funded by IRD. With Norbert Silvera (IRD iEES Paris), their work there was mostly focused on the processing and […]

Geophysical measurement campaign in India

A geophysical measurement campaign to characterize the spatial heterogeneity of the regolith thickness (main potential water stock in fractured aquifers) was carried out in May 2022 in both the Berambadi and the Mule Hole catchments (PI: Jean Riotte, IRD). Supported by EQUIPEX CRITEX, the campaign combined electrical resistivity, seismic, and Control Source Audio-Magneto-Telluric (CS-AMT) surveys. […]

Launching ANR NUTRILIFT project

Nutrients’ cycles and budget: the first mission to dig and instrument deep pits in Berambadi catchment, India, was held in June-July 2022 within the ANR NUTRILIFT project (PI: Jean Riotte, IRD). These pits are located in both an irrigated plot and an agroforestry plot. They are 9 and 10 m deep, respectively, and their diameter […]

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