Daniela Valigi

ORCID: 0000-0002-2256-251X
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About
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Research Areas
  • Landslides and related hazards
  • Hydrology and Watershed Management Studies
  • earthquake and tectonic studies
  • Karst Systems and Hydrogeology
  • Flood Risk Assessment and Management
  • Seismology and Earthquake Studies
  • Cryospheric studies and observations
  • Groundwater flow and contamination studies
  • Seismic Waves and Analysis
  • Water resources management and optimization
  • Geotechnical Engineering and Analysis
  • Groundwater and Isotope Geochemistry
  • Soil and Unsaturated Flow
  • 3D Surveying and Cultural Heritage
  • Tree Root and Stability Studies
  • Geological and Geophysical Studies Worldwide
  • Hydrological Forecasting Using AI
  • Geotechnical Engineering and Soil Stabilization
  • Remote Sensing and Land Use
  • Seismic Imaging and Inversion Techniques
  • Water Systems and Optimization
  • Dam Engineering and Safety
  • Geological Modeling and Analysis
  • Geological formations and processes
  • Hydraulic flow and structures

University of Perugia
2012-2022

Abstract. In Italy, rainfall is the primary trigger of landslides that frequently cause fatalities and large economic damage. Using a variety information sources, we have compiled catalogue listing 753 events resulted in Italy. For each event catalogue, exact or approximate location landslide time period initiation slope failure known, together with on duration D, mean intensity I, failure. The represents single largest collection rainfall-induced was exploited to determine minimum...

10.5194/nhess-10-447-2010 article EN cc-by Natural hazards and earth system sciences 2010-03-11

A seismic sequence in central Italy from August 2016 to January 2017 affected groundwater dynamics fractured carbonate aquifers. Changes spring discharge, water-table position, and streamflow were recorded for several months following nine Mw 5.0–6.5 events. Data 22 measurement sites, located within 100 km of the epicentral zones, analyzed. The intensity induced changes correlated with magnitude distance epicenters. additional post-seismic discharge rivers springs was found be higher than 9...

10.1007/s10040-017-1717-7 article EN cc-by Hydrogeology Journal 2018-01-24

Abstract A sustained increase in spring discharges was monitored after the 2016 Central Italy seismic sequence fractured carbonate aquifer of Valnerina–Sibillini Mts. The groundwater surplus recorded between August and November 2017 determined to be 400 500 × 10 6 m 3 . In aquifers, post‐seismic rise is generally attributed an bulk permeability caused by fracture cleaning effect, which induced pore pressure propagation. studied large amount additional discharge cannot only enhanced...

10.1002/hyp.13662 article EN Hydrological Processes 2019-12-10

The interaction between fluids and tectonic structures such as fault systems is a much-discussed issue. Many scientific works are aimed at understanding what the role of in displacement deep is, by investigating upper mantle, lower crustal portion upraising gasses carried liquids. other try to explore recharge processes, i.e., precipitation, zones, aiming recognize function abovementioned their capability direct groundwater flow towards preferential drainage areas. Understanding faults...

10.3390/w13111499 article EN Water 2021-05-27

Landslides can be triggered by intense or prolonged rainfall. Rain gauge measurements are commonly used to predict landslides even if satellite rainfall estimates available. Recent research focuses on the comparison of and measurements. The rain data from Italian network (collected in system database “Verifica Rischio Frana”, VRF) compared with National Aeronautics Space Administration (NASA) Tropical Rainfall Measuring Mission (TRMM) products. For purpose, we couple point at individual grid...

10.3390/cli5040090 article EN Climate 2017-12-03

Nowadays, the balance between incoming precipitation and stream or spring discharge is a challenging aspect in many scientific disciplines related to water management. In this regard, although advances methodologies for calculation concerning each component of cycle have been achieved, Thornthwaite–Mather method remains one most used, especially hydrogeological purposes. fact, contrast physical-based models, which require input parameters, simple, empirical, data-driven procedure error...

10.3390/hydrology8010034 article EN cc-by Hydrology 2021-02-20

Understanding the groundwater flow in carbonate aquifers represents a challenging aspect hydrogeology, especially when they have been struck by strong seismic events. It has proved that large earthquakes change springs hydrodynamic behaviour showing transitory or long-lasting variations and making their management much more difficult. This is case of Sibillini Massif (central Italy), which hit well-known 2016–2017 period. work aims to improve knowledge circulation possible changes behaviour,...

10.3390/w12113073 article EN Water 2020-11-02

Co-seismic changes in groundwater regime are often observed after moderate to strong earthquakes. The 24 August 2016 Mw 6.0 extensional Amatrice earthquake, which was the first event of a long-lasting seismic sequence, including 30 October 6.5 Norcia event, triggered significant discharge alteration Pescara di Arquata spring, located Umbria-Marche Apennines (Northern Apennines, Central Italy) and exploited for drinking purposes. During five months mainshock, an extra flow about 30% recorded,...

10.3390/w12030767 article EN Water 2020-03-10

This work analyzes the response of springs fed by karst/fractured limestone aquifers, which extensively outcrop in central Italy, to climatic variations. In Italy area, variations are represented a general decrease annual and winter precipitation. It is shown how groundwater regime, discharge springs, their climate change depend great extent on geologic structural setting system. Some mountain local systems representing overflow deeper regional flow feeding larger base often poor quality. A...

10.1061/(asce)he.1943-5584.0000671 article EN Journal of Hydrologic Engineering 2012-08-06

Variations of springs discharge due to seismic events are rather common. On 2016 October 30th a Mw 6.5 earthquake occurred 5 km NNE Norcia Town (Central Italy), at depth around 9 b.g.l. The Torbidone spring, dry since 1979, was re-activated after the earthquake, and its rose up 1.6 m3/s in thefollowing weeks. Torbidone, with other minor springs, feeds baseflow Sordo River (Nera basin), which increased 2m3/s earthquake. did not affect only spring but also entire groundwater circulation Nera...

10.3301/rol.2019.25 article EN Rendiconti online della Società Geologica Italiana 2019-03-01

Carbonate aquifers are characterised by strong heterogeneities and their modelling is often a challenging aspect in hydrological studies. Understanding carbonate can be more complicated the case of seismic events which have been widely demonstrated to influence groundwater flow over wide areas or on local scale. The 2016–2017 sequence Central Italy paradigmatic example how earthquakes play an important role surface water modifications. Campiano catchment, experienced significant discharge...

10.3390/hydrology9060097 article EN cc-by Hydrology 2022-05-31

The aim of the present map is to illustrate a detailed pre-earthquake hydrogeological conceptual model Sibillini Mts. This area was struck by prolonged seismic sequence up Mw 6.5 in 2016. Geological, tectonic, and data were collected from literature before 2016, subsequently standardized re-interpretated with presenting (1:50,000 scale) carbonate system (Central Italy). supported 11 both cross longitudinal sections, which show underground spatial relationship between aquifers, aquicludes,...

10.1080/17445647.2021.1894252 article EN cc-by Journal of Maps 2021-03-12

Hydrological uncertainty due to daily flow variability and the effect of climate change on water resources is a critical topic in feasibility evaluations hydro-power projects, especially for run-of-river power plant. The produced by these factors annual energy output such type plant was investigated. Empirical methods improve performance are proposed, which enable choice most suitable design (Qd) according hydrological features river, frequency dry wet years basin target production.

10.1016/j.egypro.2014.10.376 article EN Energy Procedia 2014-01-01

Transmissivity estimates can be obtained by different approaches, mainly analytical and empirical. The application of methods requires checking non-linear well losses due to turbulence vertical flow related partial penetration. empirical approach relates transmissivity values specific capacity data measured in the same well. interpretation available pumping tests highlights porous media solutions’ applicability most step-drawdown curves analyzed. Double or triple porosity approaches are more...

10.3390/w13101374 article EN Water 2021-05-14

Hydrogeological perturbations in response to earthquakes are widely described worldwide. In carbonate aquifers, a post-seismic discharge increase is often attributed an of bulk permeability due co-seismic fracturing and the attention on role faults explain diversion groundwater increasing. We focus reaction hydrogeological basins extensional seismicity, taking as example effects Central Italy 2016-2017 seismic sequence, Basal aquifer Sibillini Mountains area. Geo-structural, seismological...

10.1038/s41598-022-26681-2 article EN cc-by Scientific Reports 2022-12-27
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