Abstract

A new method to study 3D saline front advancement in coastal fractured aquifers has beenpresented. Field groundwater salinity was measured in boreholes of the Bari (Southern Italy) coastalaquifer with depth below water table. Then, the Ghyben-Herzberg freshwater/saltwater (50%) sharpinterface and saline front position were determined by model simulations of the freshwater flowin groundwater. Afterward, the best-fit procedure between groundwater salinity measurements,at assigned water depth of 1.0 m in boreholes, and distances of each borehole from the modelledfreshwater/saltwater saline front was used to convert each position (x, y) in groundwater to thewater salinity concentration at depth of 1.0 m. Moreover, a second best-fit procedure was appliedto the salinity measurements in boreholes with depth z. These results provided a grid file (x, y, z,salinity) suitable for plotting the actual Bari aquifer salinity by 3D maps. Subsequently, in orderto assess effects of pumping on the saltwater-freshwater transition zone in the coastal aquifer, theNavier-Stokes (N-S) equations were applied to study transient density-driven flow and salt masstransport into freshwater of a single fracture. The rate of seawater/freshwater interface advancementgiven by the N-S solution was used to define the progression of saline front in Bari groundwater,starting from the actual salinity 3D map. The impact of pumping of 335 L/s during the transitionperiod of 112.8 days was easily highlighted on 3D salinity maps of Bari aquifer.

Autore Pugliese

• Masciopinto Costantino

Tutti gli autori

• Masciopinto C.

Titolo volume/Rivista

Computation

Anno di pubblicazione

2016

ISSN

2079-3197

ISBN

Non Disponibile

Numero di citazioni Wos

Nessuna citazione

Ultimo Aggiornamento Citazioni

Non Disponibile

Numero di citazioni Scopus

Non Disponibile

Ultimo Aggiornamento Citazioni

Non Disponibile

Settori ERC

Non Disponibile

Codici ASJC

Non Disponibile