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UID:pretalx-flowpath-2025-BABSWY@talks.staging.osgeo.org
DTSTART;TZID=CET:20250611T131000
DTEND;TZID=CET:20250611T132000
DESCRIPTION:The assessment of drought duration\, severity\, and its impact 
 on groundwater resources can be achieved through the integrated analysis o
 f climatic indices and groundwater level fluctuations. This study investig
 ates the effects of drought periods on groundwater within distinct sectors
  of the Castelporziano Estate aquifer. Utilizing data from two meteorologi
 cal stations and the Estate's piezometric monitoring network\, a comprehen
 sive analysis was conducted. The availability of extensive thermo-pluviome
 tric and piezometric records (1995-2024) facilitated the computation of th
 e Standardized Precipitation-Evapotranspiration Index (SPEI) and the Stand
 ardized Groundwater Index (SGI)\, enabling the evaluation of their variati
 ons over the past 30 years. \nPrior research has established the presence 
 of a main aquifer\, exhibiting seasonal fluctuations primarily driven by l
 ocal meteoric inputs\, with base flow sustained by contributions from the 
 regional aquifer. The Coastal and Central sectors\, mainly recharged by lo
 cal precipitation\, show a different decline in piezometric levels. Compar
 ative analysis of the SPEI calculated for two weather stations\, one situa
 ted along the coast and the other in the inland sector of the Estate\, rev
 ealed significant variations\, which prove decisive in the recharge proces
 ses of these sectors. The Coastal sector exhibited a consistent pattern of
  alternating wet and dry periods until 2016\, followed by a sustained drou
 ght period extending to 2023. These fluctuations are reflected in groundwa
 ter levels\, as evidenced by the SGI\, which has registered continuous neg
 ative values since 2016\, reaching its minimum values in 2024. In the Cent
 ral sector\, the SPEI indicates a protracted drought from 1999 to 2008\, r
 esulting in a persistent reduction of piezometric heads. Consistent negati
 ve SGI values since 2008 corroborate the enduring water deficit in this se
 ctor\, with a discernible exacerbation observed in the last three years\, 
 correlating with the SPEI trend.
DTSTAMP:20260429T053526Z
LOCATION:Room R3
SUMMARY:Assessing the effects of drought periods on the undeterred aquifer 
 of Castelporziano Natural Reserve (Rome\, Italy). - Chiara Sbarbati
URL:https://talks.staging.osgeo.org/flowpath-2025/talk/BABSWY/
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