| Titre | Recherches hydrogéomorphologiques et spéléologiques sur le bassin-versant du Saint-Georges et le réseau du BU56 (— 1 338 m) (Navarre et Pyrénées Atlantiques) | |
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| Auteur | Richard Maire | |
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Revue | Revue de Géographie Alpine |
| Numéro | vol. 70, no 3, 1982 | |
| Page | 11 pages | |
| Résumé anglais |
Abstract. — With the recent discovery (1980-81) of the big underground system "BU56" ( — 1 338 m), the hydrogeology of the karst of " St.Georges" begins to be better known. This system represents 30-35% of the subterranean hydrology, that is to say a 2 mЗ/s cube (specific flow = 66-70 l/s/km2) against 5,64 mЗ/s cube in the principal efflux (Illamina). During the year, we observe an hydrologie regime with 2 maxima (spring, autumn-winter) and 2 minima (summer, winter). The importance of the chambers and galleries is the result of several processes: corrosion, collapses and faults on paleozoic substratum (shales), mecanic erosion of the underground rivers. The specific dissolution is about 95-100 mm/ 1000 years with 15-20% for the superficial corrosion, 40-45% for the first part of the deep corrosion (0-50 m) and 40% for the deep corrosion. Source : Éditeur (via Persée) |
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| Article en ligne | https://www.persee.fr/doc/rga_0035-1121_1982_num_70_3_2503 |
