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Actualités et séminaires

  • 23 Jun Séminaire
    Numerical modeling of the spectral induced polarization response of closely packed metallic particles in sandcolumn experiments

    The detection of metallic particles in the subsurface, e.g. for ore exploration or investigation of landfills, has been an important field in applied geophysics for several decades. Because of the high conductivity and high polarizability of metallic particles, geophysical methods using electrical properties, especially induced polarization, are highly relevant.

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  • 16 Jun Séminaire
    Developing a GDGT-Temperature calibration for lake sediment paleoclimate reconstructions across a gradient of Canadian ecozones.

    Glycerol dialkyl glycerol tetraethers are a class of lipid biomarkers that in recent decades have been show to act as paleoclimate indicators in lake sediment. New research and recent methodological advances have shown that the 5’ methyl branched tetraether index (MBT5’­­Me ) correlates well with temperature, however its use as a paleoclimate marker requires the development of calibration estimates for the areas under investigation.

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  • 02 Jun Séminaire
    Voyage en Terres Australes Françaises

    Le résumé de ma mission d'un an sur l'île Amsterdam en 20 questions

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  • 12 May Séminaire
    Maar lakes as observatories of climate-groundwater-anthropic interactions in Central Mexico

    Groundwater and surface water are a single complex and interacting system depending on geological, climatic, and hydrological factors, among others. In the context of global change, anthropic activities are an additional forcing in the groundwater-surface water interaction (GW-SW-I) systems, which may impact water quality, quantity, and ecosystems health. A commonly impacted variable in lakes is water level. Several lakes worldwide have shown water level decline trends and total desiccation in recent decades, particularly in arid regions.

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  • 11 May Séminaire
    Novel machine learning methodologies to unpack the complexity of longitudinal movement patterns of facultative amphidromous fish

    Rodrigo Ramírez‑Álvarez, Sergio Contreras, Aurélien Vivancos, Malcolm Reid, Ruby López‑Rodríguez & Konrad Górski

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