Flow dynamics and erosion rate of a representative karst basin (Upper Aniene River, Central Italy)
| Autor: | C. Percopo, P. Bono |
|---|---|
| Rok vydání: | 1996 |
| Předmět: |
Hydrology
geography geography.geographical_feature_category General Engineering Aquifer Karst chemistry.chemical_compound chemistry Vadose zone Earth and Planetary Sciences (miscellaneous) Erosion General Earth and Planetary Sciences Environmental Chemistry Carbonate Carbonate rock Sedimentary rock Groundwater Geology General Environmental Science Water Science and Technology |
| Zdroj: | Environmental Geology. 27:210-218 |
| ISSN: | 1432-0495 0943-0105 |
| DOI: | 10.1007/bf00770434 |
| Popis: | Experimental data refer to a preliminary estimate of suspended solid and solute load of a perennial river. The basin is composed almost entirely of bare mesozoic, highly fractured, karstified carbonate rocks of the central Apennine range. The suspended solid load related to stormflow events in 1991 corresponds to about 14,970 t yr−1. For the same period the solute load is 60,060 t yr−1 for a mean base flow discharge of 9.4 m3 s−1. Based on the mean concentration of Ca + Mg in water, the value of dissolution of carbonate rocks of 37.1 m3 km−2 (equivalent approximately to 0.04 mm yr−1) was calculated. Physical and chemical variations that occur during storm events indicate the complex dynamic processes in the karst aquifer and the role undertaken by the epikarst as perched water reservoir and by the major conduits that develop through the vadose and saturated zones of the karst system. |
| Databáze: | OpenAIRE |
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