Multidisciplinary approach to assess the seasonal effect on redox processes occurring in a tropical alluvial aquifer

Iron, Manganese, alluvial aquifer, Hondura

A Firenze messe le basi per una Piattaforma internazionale per una corretta gestione delle risorse idriche sotterranee

II 10 dicembre, in occasione della Giornata dei Diritti umani si è tenuto a Firenze, nella monumentale Sala dei Cinquecento di Palazzo Vecchio, il 1° Workshop su: "Uso delle risorse idriche sotterranee in periodi siccitosi. Esperienze dalla Toscana al resto del mondo", organizzato dalla Sezione Italiana dell'Associazione Internazionale degli Idrogeologi (IAH) con Aquifera onlus e patrocinato, oltre che dalla Regione Toscana e dal Comune di Firenze (che ha gentilmente concesso l'uso della sala), dalla Società Geologica Italiana (SGI), dal Consiglio Nazionale dei Geologi (CNG) e dal'IAH-Burdon Groundwater Network for International Development [...]

Diurnal and semidiurnal cyclicity of Radon (222Rn) in groundwater, Giardino Spring, Central Apennines, Italy

Understanding natural variations of Rn (222Rn) concentrations is the fundamental prerequisite of using this radioactive gas as a tracer, or even precursor, of natural processes, including earthquakes. In this work, Rn concentrations in groundwater were continuously measured over a seven-month period, during 2017, in the Giardino Spring, Italy, together with groundwater levels in a nearby well installed into a fractured regional aquifer. Data were processed to reduce noise, and then analyzed to produce the Fourier spectra of Rn concentrations and groundwater levels. These spectra were compared with the spectrum of tidal forces. Results showed that diurnal and semidiurnal cycles of Rn concentrations, and filtered oscillations of groundwater levels, in the nearby well, are correlated with solar and luni-solar components of tidal forces, and suggested no correlation with the principal lunar components. Therefore, influencing factors linked to solar cycles, such as daily oscillations of temperature and atmospheric pressure, and related rock deformations, may have played a role in Rn concentrations and groundwater levels. An open question remains regarding the correlation, which is documented elsewhere, of Rn concentrations and groundwater levels with the lunar components of the solid Earth tides

Correlation between the melting of the snows and the chemical-physical characteristics of springs, like parameter for the evaluation of karst aquifer vulnerability in Central Apennine

The study analyses, experimentally, the vulnerability of springs emerging from carbonatic hydrostructures of the Central Apennine. In particular, the Majella Mountain was studied as sample hydrostructure. The observations carried out over a period of two years show that: they dynamic resources of basal springs are essentially due to the melting of snow; different circuits are present, some of which deriving from superimposition of basal and shallow circuits; the circulation times permit to evaluate the vulnerability of the springs that is nevertheless high, despite the variability

[Let’s start again with Hydrogeology. The recovery of events in attendance organized and sponsored by IAH]

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2017, an excellent year for the Italian hydrogeology

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