Scheda di dettaglio – i prodotti della ricerca
| Dato | Valore |
|---|---|
| Title | Directional Variography and Assessment of the Characteristics of a Contamination Source of an Aquifer: Is It a Possible Task? |
| Abstract | The geometric characteristics of a contamination source in an aquifer are a very important element for managing, monitoring and cleaning polluted groundwater. This paper outlines a methodology to evaluate the configuration of the sources using a geostatistical approach, based on the directional variography. The proposed method has been tested using the results of three simulated cases and the values of concentration of several pollutants sampled in 36 wells. Directional experimental variograms have been plotted, for each variable, and theoretical models with their parameters (range and sill) have been fitted. The radar plots of the values of the sills explain the different typology of the sources. In particular, linear sources produce a butterfly shape radar plot, punctual sources produce a rounded shape radar plot and sparse, punctual sources produce an almost irregular shape radar plot. The analysis of directional variography can have practical usability in screening field measurements aimed at the identification of contamination sources. |
| Source | Hydraulic Engineering for Substainable Water Resources Management at the Turn of the Millenium, Graz, 22-27 Agosto 1999 |
| Keywords | GeostatisticsDirectional VariographyGroundwaterPollution |
| Year | 1999 |
| Type | Contributo in atti di convegno |
| Authors | Passarella G; D'Agostino V; Vurro M; Benedini M |
| Text | 213287 1999 Geostatistics Directional Variography Groundwater Pollution Directional Variography and Assessment of the Characteristics of a Contamination Source of an Aquifer Is It a Possible Task Passarella G; D Agostino V; Vurro M; Benedini M G. PASSARELLA , M. VURRO , V. D AGOSTINO and M. BENEDINI Istituto di Ricerca Sulle Acque, CNR, Roma, Italy. Tecnopolis, Novus Ortus, Valenzano, Italy; Istituto di Ricerca Sulle Acque, CNR, Bari, Italy. The geometric characteristics of a contamination source in an aquifer are a very important element for managing, monitoring and cleaning polluted groundwater. This paper outlines a methodology to evaluate the configuration of the sources using a geostatistical approach, based on the directional variography. The proposed method has been tested using the results of three simulated cases and the values of concentration of several pollutants sampled in 36 wells. Directional experimental variograms have been plotted, for each variable, and theoretical models with their parameters range and sill have been fitted. The radar plots of the values of the sills explain the different typology of the sources. In particular, linear sources produce a butterfly shape radar plot, punctual sources produce a rounded shape radar plot and sparse, punctual sources produce an almost irregular shape radar plot. The analysis of directional variography can have practical usability in screening field measurements aimed at the identification of contamination sources. Proceedings of XXVIII IAHR Congress on Hydraulic Engineering for Sustainable Water Resources Management at the Turn of the Millennium , Graz, 1999 H Bergmann, R Krainer, H Breinhalter 3901351345 Pubblicazione in atti di convegno con ISBN. Hydraulic Engineering for Substainable Water Resources Management at the Turn of the Millenium Graz 22 27 Agosto 1999 Internazionale Contributo Directional Variography and Assessment of the Characteristics of a Contamination Source of an Aquifer Is It a Possible Task Pubblicazione in atti di convegno con ISBN. INT_Contributo_in_atti_Convegno_11.pdf Contributo in atti di convegno giuseppe.passarella PASSARELLA GIUSEPPE BENEDINI MARCELLO michele.vurro VURRO MICHELE TA.P04.005.008 Integrazione di metodologie per il monitoraggio e la modellizzazione per la gestione delle risorse idriche |