Application of the master recession curve method to the study of some mountain springs in the Tennacola stream catchment (central Apennine, Italy) (CROSBI ID 635650)
Prilog sa skupa u časopisu | sažetak izlaganja sa skupa | međunarodna recenzija
Podaci o odgovornosti
Giacopetti, Marco ; Materazzi, Marco ; Posavec, Kristijan ; Pambianchi, Gilberto
engleski
Application of the master recession curve method to the study of some mountain springs in the Tennacola stream catchment (central Apennine, Italy)
The mountain portion of the Tennacola stream basin, located in the north-east sector of the Sibillini Mountains (Central Apennines, Italy), is characterized by the presence of numerous springs, exploited for drinking purpose. The presence of lithotypes with different permeability, allowed the formation of three main hydrogeological complexes, overlapped and characterized by two groups of springs with different discharge and regime: 1. the Group of springs Tennacola "high", located in the uppermost portion of the catchment, at altitudes between 1100m and 1150m a.s.l. and with mean annual discharge of about 30l/s ; 2. the Group of springs Tennacola "low", the most important resources of the area with discharge ranging between 70 and 200l/s, placed at different elevation between 800m and 700m a.s.l. The hydrogeological regime of the springs has been defined applying (for the first time to Apennine aquifers and particularly to springs with discharge < 100l/s) the methodology of the Master Recession Curves and the MRC Tool V2 code (Posavec et al., 2006): the method, simultaneously analyzing the recession curves of several years, allows to evaluate the hydrogeological features of a groundwater reservoirs and to integrate the results obtained from a single spring hydrographs analysis. In particular, the value and the trend obtained for the depletion constant alpha, (0.006 and 0.013 for the Group of springs Tennacola "low" the Group of springs Tennacola "high" respectively) evidenced that the groundwater circulation can generally be associated with the presence of a diffuse fracturing, medium-low opening of joint systems and low permeability matrix, with consequent higher storage and gradual and constant release of water ; the presence of conduits and pipes associated with typical karst systems can therefore be ruled out. The results, confirming the applicability of the method also to minor springs, are therefore encouraging and push to a growing commitment in this direction.
Master recession curve; springs; Apennine
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Podaci o prilogu
182-182.
2016.
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objavljeno
Podaci o matičnoj publikaciji
Rendiconti online Società Geologica Italiana
Ducci, D. ; Pettita, M.
Rim: Societe Geologica Italiana
2035-8008
Podaci o skupu
Nepoznat skup
predavanje
29.02.1904-29.02.2096
Povezanost rada
Rudarstvo, nafta i geološko inženjerstvo