Polemio, M. and Dragone, V. and Limoni, P. P. and Mitolo, D. and Santaloia, F. (2003) Caratterizzazione idrogeologica della piana di Metaponto, qualità e rischi di degrado delle acque sotterranee. Acque Sotterranee, 83 (83). pp. 35-49. ISSN 1828-454X
|
Text
105 m5.pdf Download (2MB) | Preview |
Abstract
The study area falls within the Ionian coastal plain (Southern Italy), bounded on the West by the Sinni River and on the East by Bradano River. It covers 40 km along the coast and 6 km inland. The geological and hydrogeological features of the study area and the chemical-physical groundwater characterisation have been inferred from the data analysis of 1130 boreholes. Some aquifers, connected among them, constituted by soils of different geological origin, exist in the area also if the coastal plain aquifer is the most interesting for practical utilisation. Groundwater flow is mainly unconfined inland, where the aquifer is constituted by terraced deposits and confined in the alluvial coastal plain. An upper clayey layer overlies the sandy coastal aquifer characterised by a mean hydraulic conductivity value equal to 2.3 10-4 m/s. Being the direct natural recharge extremely low, the recharge of this coastal aquifer is mainly guaranteed by the discharge from upward aquifers and from the river leakage. The bottom of the aquifer is a silty-clayey bed which lies under the sea level permitting so the seawater intrusion. This phenomenon involves the studied coastal plain for a width of 1-1.5 km on average and it is less evident moving inwards where the altitude of the clayey bottom of the aquifer becomes progressively higher than the sea level. Other chemical-physical data, studied to determine the quality of the waters, showed that the pollution of the groundwater is considered a grave environmental problem for the studied area.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | groundwater resources, seawater intrusion, hydrogeological parameters, Southern Italy |
| Subjects: | 500 Scienze naturali e Matematica 500 Scienze naturali e Matematica > 550 Scienze della Terra |
| Depositing User: | Dott. Maurizio Polemio |
| Date Deposited: | 24 Jul 2019 07:51 |
| Last Modified: | 24 Jul 2019 07:51 |
| URI: | http://eprints.bice.rm.cnr.it/id/eprint/19070 |
Actions (login required)
 |
View Item |
