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Visiting this exhibition, you can venture deep into the heart of the tropical rainforests -of Latin America, Africa or Asia- and discover how far they are essential for the future of our Earth!
Over 99 % of the Earth’s fresh water exists in ice formations or underground. IRD geophysicists, aiming to find ways of detecting this resource, are at the spearhead in the development of an innovatory method based on nuclear magnetic resonance. To date, it is the only technique applicable for detecting liquid water underground or under a glacier from the surface and for estimating the volume.
This method recently found an original application as an aid for warning of glacier hazard. It successfully detected the presence of an immense water pocket of 55 000 m3 sitting under the Tête Rousse glacier in Haute-Savoie. This posed a flooding threat to people living in the valley below. Warning was given and the local authorities conducted a draining operation.
This technique is adaptable to glacier risk management, but it can also help for water supply provision. It can benefit both tropical mountain areas, such as the Andes or the Himalaya where glacial water can be a major threat, given the context of climate change, and semi-arid regions where water resources lie stored deep underground.
- Another step towards domestication of the Amazonian giant fish
The Amazon and its tributaries harbour nearly one-tenth of the world’s biodiversity of freshwater fish. Among the 2500 species recorded, Arapaima gigas is one of the most emblematic.
In Brazil it is better known as the pirarucu, in Peru as the paiche, and is one of the largest species of freshwater fish. Some specimens can reach 4 m in length with a weight of 200 kg.
This graceful predator has become a victim of over-fishing, however, and figures on the IUCN Red List of Threatened Species.
- Interview with Bernard Delay,
Bernard Delay chairs the Fondation pour la recherche sur la biodiversité, an institution set up in 2008 with the participation of eight scientific organizations including the IRD
On the occasion of the International Year of Planet Earth and the 13th World Congress on Water, the thirty-one students from the "water, soil and climate" JRD club of the lycée Jules Guesde in Montpellier, studied the evolution of glaciers and avalanches in the Alps and the link ...
One of the well-known consequences of global warming is sea-level rise linked to sea temperature increase which induces oceanic thermal expansion. How this rise would be spread at the global scale is difficult to predict, however. Other natural processes such as plate tectonics can favour ...