Ground measurements are fundamental in Earth Sciences because they uncover key physical processes that must be considered by models. A major challenge is then to document the variability of environmental processes over a large span of time and space scales. During my PhD, I had the opportunity to conduct several field trips in Niger to document the gravity variations induced by the water cycle over a small catchment. Later on, I also participate to a field trip of two weeks in Central Amazon funded by the ANR CARBAMA. In June 2019, I was part of a 4-people team involved in a seismological field trip in the Kimberleys, in Northwestern Australia.
GHYRAF
During my PhD in Strasbourg university, I organized a three-month microgravimetry mission in Niger in the framework of the ANR GHYRAF. I coordinated the actions of 6 French participants from various research groups (EOST, HSM, Géosciences Montpellier, IPGP, IRD, CNRS). We formed about 20 students of the University Abdou Moumouni in Niamey, Niger. I managed myself 2 surveys of 3 weeks of microgravimetry measurements.
This mission proved that time-lapse microgravity measurements were able to detect small-to-medium amplitude hydrology-related signals in challenging field conditions.They enabled the quantification of significant heterogeneity in the water storage at small time and space scales, which were shown to be greatly influenced by the vadose zone. See publication. I also participated to a "GHYRAF - round trip", where absolute and microgravity measurements were taken over the 3 main sites of the project in Niger and in Benin. See publication. Finally, I was in charge of a mission of two weeks in Wankama (Niger) to conduct differential GPS measurements to achieve a Digital Elevation Model of the hydrological catchment. See publication. |
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CARBAMA
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During my postdoc in Toulouse (GET), I participate to a field trip of two weeks in Central Amazon funded by the ANR CARBAMA. The objectives of this mission were to analyze the water quality of the Januaca "varzea" lake and to evaluate its bathymetry.
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