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UID:pretalx-flowpath-2025-G3TNZT@talks.staging.osgeo.org
DTSTART;TZID=CET:20250612T092000
DTEND;TZID=CET:20250612T093000
DESCRIPTION:This study estimates the recharge dynamics in an unconfined por
 ous coastal aquifer by means of a time-series approach. Two water wells we
 re selected in the Volturno Plain (Campania Region\, southern Italy)\, res
 pectively located in a wetland area close to the coastline (Pz1) and in an
  agricultural not irrigated field at 10 km inland close to the Volturno Ri
 ver (Pz2). A multiparameter probe was installed in each water well to meas
 ure: water depth\, temperature and electrical conductivity. Data were coll
 ected every 24 hours from February 2016 to December 2017 in Pz1\, and ever
 y 12 hours from October 2022 to the present in Pz2. Rainfall data collecte
 d at the meteorological station closest to each monitoring point were cons
 idered in the analysis. The recharge rate was estimated using the Water Ta
 ble Fluctuation (WTF) method. Six and five single recharge events were ide
 ntified at Pz1 and Pz2\, respectively. \nAt Pz1\, the recharge ratio (RR\,
  ratio between recharge amount and precipitation amount) remains constant 
 throughout the year (average RR = 45%)\, likely due to the presence of mar
 shy land\, which limits groundwater recharge during heavy rainfall. At Pz2
 \, RR shows seasonal variations with average values of 104% in autumn-wint
 er and 351% in spring-summer\, probably related to the agricultural practi
 ses (bare land\, planting\, growing and harvest phases). The results indic
 ate that recharge decreases as precipitation increases due to greater pore
  saturation during the infiltration process. In both sites\, we observe th
 at precipitation events exceeding 50 mm in 24 hours result in a decrease i
 n both electrical conductivity and temperature\, highlighting the influenc
 e of infiltration dynamics on groundwater chemistry. Lastly\, recharge amo
 unts calculated using the WTF method are compared with those obtained thro
 ugh a classical hydrogeological balance\, showing a good correlation.\nThi
 s study highlights how groundwater recharge varies in response to seasonal
  changes and soil conditions.
DTSTAMP:20260428T025528Z
LOCATION:Room R3
SUMMARY:Recharge estimation from groundwater level fluctuations in a coasta
 l unconfined aquifer in Campania Region (southern Italy) - Elena Del Gaudi
 o
URL:https://talks.staging.osgeo.org/flowpath-2025/talk/G3TNZT/
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