| Title | Water-table and discharge changes associated with the 2016-2017 seismic sequence in central Italy: hydrogeological data and a conceptual model for fractured carbonate aquifers |
| Abstract | A seismic sequence in central Italy from August 2016 to January 2017 affected groundwater dynamics in fractured carbonate aquifers. Changes in spring discharge, water-table position, and streamflow were recorded for several months following nine Mw 5.0-6.5 seismic events. Data from 22 measurement sites, located within 100 km of the epicentral zones, were analyzed. The intensity of the induced changes were correlated with seismic magnitude and distance to epicenters. The additional post-seismic discharge from rivers and springs was found to be higher than 9 m3/s, totaling more than 0.1 km3 of groundwater release over 6 months. This huge and unexpected contribution increased streamflow in narrow mountainous valleys to previously unmeasured peak values. Analogously to the L'Aquila 2009 postearthquake
phenomenon, these hydrogeological changes might reflect an increase of bulk hydraulic conductivity at the aquifer scale, which would increase hydraulic heads in the discharge zones and lower them in some recharge areas. The observed changes may also be partly due to other mechanisms, such as shaking and/or squeezing effects related to intense subsidence in the core of the affected area, where effects had maximum extent, or breaching of hydraulic barriers. |
| Source | Hydrogeology journal 26, pp. 1009–1026 |
| Keywords | Carbonate rocksCo-seismic effectsEarthquakeGroundwater monitoringItaly |
| Journal | Hydrogeology journal |
| Editor | Springer, Berlin, Germania |
| Year | 2018 |
| Type | Articolo in rivista |
| DOI | 10.1007/s10040-017-1717-7 |
| Authors | Petitta, Marco; Mastrorillo, Lucia; Preziosi, Elisabetta; Banzato, Francesca; Barberio, Marino Domenico; Billi, Andrea; Cambi, Costanza; de Luca, Gaetano; Di Carlo, Giuseppe; Di Curzio, Diego; Di Salvo, Cristina; Nanni, Torquato; Palpacelli, Stefano; Rusi, Sergio; Saroli, Michele; Tallini, Marco; Tazioli, Alberto; Valigi, Daniela; Vivalda, Paola; Doglioni, Carlo |
| Text | 385167 2018 10.1007/s10040 017 1717 7 Scopus 2 s2.0 85040863406 ISI Web of Science WOS WOS 000433536800003 Carbonate rocks Co seismic effects Earthquake Groundwater monitoring Italy Water table and discharge changes associated with the 2016 2017 seismic sequence in central Italy hydrogeological data and a conceptual model for fractured carbonate aquifers Petitta, Marco; Mastrorillo, Lucia; Preziosi, Elisabetta; Banzato, Francesca; Barberio, Marino Domenico; Billi, Andrea; Cambi, Costanza; de Luca, Gaetano; Di Carlo, Giuseppe; Di Curzio, Diego; Di Salvo, Cristina; Nanni, Torquato; Palpacelli, Stefano; Rusi, Sergio; Saroli, Michele; Tallini, Marco; Tazioli, Alberto; Valigi, Daniela; Vivalda, Paola; Doglioni, Carlo Universita degli Studi di Roma La Sapienza; Consiglio Nazionale delle Ricerche; Universita degli Studi Roma Tre; Consiglio Nazionale delle Ricerche; Universita degli Studi di Perugia; Istituto Nazionale Di Geofisica E Vulcanologia, Rome; Laboratori Nazionali del Gran Sasso; University of G. d Annunzio Chieti and Pescara; Consiglio Nazionale delle Ricerche; Universita Politecnica delle Marche; Universita di Cassino e del Lazio Meridionale; Universita degli Studi dell Aquila A seismic sequence in central Italy from August 2016 to January 2017 affected groundwater dynamics in fractured carbonate aquifers. Changes in spring discharge, water table position, and streamflow were recorded for several months following nine Mw 5.0 6.5 seismic events. Data from 22 measurement sites, located within 100 km of the epicentral zones, were analyzed. The intensity of the induced changes were correlated with seismic magnitude and distance to epicenters. The additional post seismic discharge from rivers and springs was found to be higher than 9 m3/s, totaling more than 0.1 km3 of groundwater release over 6 months. This huge and unexpected contribution increased streamflow in narrow mountainous valleys to previously unmeasured peak values. Analogously to the L Aquila 2009 postearthquake phenomenon, these hydrogeological changes might reflect an increase of bulk hydraulic conductivity at the aquifer scale, which would increase hydraulic heads in the discharge zones and lower them in some recharge areas. The observed changes may also be partly due to other mechanisms, such as shaking and/or squeezing effects related to intense subsidence in the core of the affected area, where effects had maximum extent, or breaching of hydraulic barriers. 26 Published version http //www.scopus.com/record/display.url eid=2 s2.0 85040863406 origin=inward Water table and discharge changes associated with the 2016 2017 seismic sequence in central Italy Petitta et al Petitta_etal_2018_printed.pdf Articolo in rivista Springer 1431 2174 Hydrogeology journal Hydrogeology journal Hydrogeol. j. Hydrogeology journal. Hydrogeology journal Print elisabetta.preziosi PREZIOSI ELISABETTA andrea.billi BILLI ANDREA cristina.disalvo DI SALVO CRISTINA DTA.AD002.026.001 GESTIONE SOSTENIBILE DEGLI ECOSISTEMI ACQUATICI E RISPOSTA AGLI IMPATTI DI ORIGINE NATURALE ED ANTROPICA MONTEROTONDO BRUGHERIO BARI |
