The Capesterre river drainage basin (surface area: 16.6 km2; average precipitation: 8 m3/s) is located on the windward side of Basse-Terre Island. The river of Capesterre drains the ancient volcanoes (lavas and pyroclastic flows) of Sans Toucher and Capesterre (600 to 400 Ka) The river of Capesterre drains the ancient volcanoes (lavas and pyroclastic flows) of Sans Toucher and Capesterre (600 to 400 Ka). The altitude of the watershed varies from 250 to 1 400 m. The watershed's soil is covered with thin andosols (between 1 and 2 m). The downstream part of the drainage basin is situated outside the National Park and it is subjected to very strong anthropogenic pressures because of the intensive banana cultivation. Our station is located upstream of the plantations, in an undeveloped area.
The parameters monitored in the watershed of Capesterre include:
• Precipitations and atmospheric deposits,
• River flowrate
• Concentration of materials in suspension,
• Chemical composition of the river: pH, conductivity, dissolved major elements, dissolved and particulate organic carbon,
• Chemical composition of solutions in saprolite, morpho-sedimentary evolution of river beds (imaging and ground-based LIDAR)
English page translated by M2 ILTS, Université Paris Diderot and Systran