Les extrractions de granulats dans le lit mineur de la moyenne Garonne toulousaine durant la seconde moitié du XXè siècle

Abstract : Starting from 1960, sediment mining in rivers has highly developed in France like in many industrialized countries in the world. This mining activity has led to a degradation of rivers with many hydromorphological and ecological impacts. On the middle section of the Garonne River, between Toulouse and the confluence with the Tarn River, the hydro-sedimentary dynamics was strongly modified over the last decades, in connection with an important sediment deficit. The causes of this change are primarily of anthropic origin, the first of which is sediment mining in the riverbed. This study aims to analyze the sediment mining between Toulouse and the confluence with the Tarn from 1960 to 1980 and proposes a reconstruction of the spatio-temporal evolution and the quantification of this activity. The consequences of industrialization of this activity are considered.
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Hugo Jantzi, Jean-Michel Carozza, Jean-Luc Probst, Philippe Valette. Les extrractions de granulats dans le lit mineur de la moyenne Garonne toulousaine durant la seconde moitié du XXè siècle. Sud-Ouest Européen, Presses Universitaires du Mirail - CNRS, 2017, pp.83-96. ⟨hal-01860415⟩

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