M. Rossi (1,2), D. Kirschbaum (3), S. Luciani (1,2), and F. Guzzetti (1), 2012, Comparison of TRMM satellite rainfall estimates with rain gauge data and landslide empirical rainfall thresholds under different morphological and climatological conditions in Italy,
Geophysical research abstracts (Online) 14 (2012).,
M. Rossi (1,2), M. Cardinali (1), F. Fiorucci (1,2), I. Marchesini (1), A.C. Mondini (1,2), M. Santangelo (1,2), S. Ghosh (3), D.E.L. Riguer (4,5), T. Lahousse (6), K.T. Chang (6), and F. Guzzetti (1), 2012, A tool for the estimation of the distribution of landslide area in R,
Geophysical research abstracts (Online) 14 (2012).,
Mergili M, Marchesini I, Fellin W, Rossi M, Raia S, Guzzetti F, 2012, A three-dimensional slope stability model based on GRASS GIS and its application to the Collazzone area, Central Italy,
EGU General Assembly 2012, Vienna, 23-27 Aprile 2012,
Abstract
Landslide risk depends on landslide hazard, i.e. the probability of occurrence of a slope failure ...
Landslide risk depends on landslide hazard, i.e. the probability of occurrence of a slope failure of a given magnitude
within a specified period and in a given area. The occurrence probability of slope failures in an area characterized
by a set of geo-environmental parameters gives the landslide susceptibility. Statistical and deterministic methods
are used to assess landslide susceptibility. Deterministic models based on limit equilibrium techniques are applied
for the analysis of particular types of landslides (e.g., shallow soil slips, debris flows, rock falls), or to investigate
the effects of specific triggers, i.e. an intense rainfall event or an earthquake. In particular, infinite slope stability
models are used to calculate the spatial probability of shallow slope failures. In these models, the factor of safety
is computed on a pixel basis, assuming a slope-parallel, infinite slip surface. Since shallow slope failures coexist
locally with deep-seated landslides, infinite slope stability models fail to describe the complexity of the landslide
phenomena. Limit equilibrium models with curved sliding surfaces are geometrically more complex, and their
implementation with raster-based GIS is a challenging task. Only few attempts were made to develop GIS-based
three-dimensional applications of such methods. We present a preliminary implementation of a GIS-based, threedimensional slope stability model capable of dealing with deep-seated and shallow rotational slope failures. The
model is implemented as a raster module (r.rotstab) in the Open Source GIS package GRASS GIS, and makes use
of the three-dimensional sliding surface model proposed by Hovland (1977). Given a DEM and a set of thematic
layers of geotechnical and hydraulic parameters, the model tests a large number of randomly determined potential
ellipsoidal slip surfaces. In addition to ellipsoidal slip surfaces, truncated ellipsoids are tested, which can occur in
the presence of weak layers or hard bedrock. Any raster cell may be intersected by various sliding surfaces, each
associated with a computed factor of safety. The lowest value of the factor of safety is stored for each raster cell
together with the depth of the associated slip surface. This results in an overview of potentially unstable regions
without showing the individual sliding areas. We test the model in the Collazzone area, Umbria, Central Italy, which
is susceptible to landslides of different types. The presence of both shallow translational and deep-seated rotational
landslides, and the availability of reference data, allow for the critical evaluation of the model in comparison with
standard infinite slope stability models.
Ivan Marchesini , Michele Santangelo, Federica Fiorucci, Mauro Cardinali , Mauro Rossi , Fausto Guzzetti, 2012, A GIS method for obtaining geologic bedding attitude,
XIII Meeting nazionale degli utenti GRASS e GFOSS, Trieste, Università degli Studi, 15-16-17 febbraio 2012,
Federica FIORUCCI (1), Francesca ARDIZZONE (1), Franni Giselle MURILLO GARCIA (2), Fausto GUZZETTI (1), Irasema ALCANTARA AYALA (2), 2012, Visual Interpretation of Very High Resolution (VHR) Stereoscopic Satellite Images for Landslide Recognition and Mapping,
AOGS-EGU, Singapore, 2012,
Abstract
Traditional methods used to prepare landslide inventory maps consist in visual interpretation of stereoscopic aerial ...
Traditional methods used to prepare landslide inventory maps consist in visual interpretation of stereoscopic aerial photography, supported by field surveys. New techniques, based on satellite remote sensing technologies, can simplify and assist the production of landslide maps. VHR satellite stereoscopic images can be an alternative to stereoscopic aerial photographs for landslide detection and mapping in all terrain types, and in different land cover conditions. Visual analysis of the images allows the recognition of the slope failures and accurate 3D mapping of the landslides. Stereoscopic satellite images cover a significantly larger area than single pairs of aerial photographs, and allow the construction of single stereoscopic 3D model. Exploiting VHR images is possible to have a single, extensive view of the study area, and to map small and large landslides without changing the viewpoint, or the pair of aerial photographs. This facilitates the task of the interpreter and improves the acquisition of the geomorphological information.
We present the results of a study, carried out in in Mexico and in Italy, aimed to evaluate the capability of the VHR stereoscopic satellite images to recognize and map different landslide types in different geo-morphological settings.. For the purpose we analyzed the following images_ i) pansharped images acquired by the GeoEye satellite sensor taken the 31 March 2010, for the Mexico study area- and ii) panchromatic images acquired by the WorldView satellite sensor on 8 March 2010, and by the GeoEye satellite sensor on 27 May 2010, for the Italian study area. The satellite images or products we used in the two test areas have a ground sampling distance of 50 cm, adequate for mapping and measuring most of the shallow landslides. We present the photo interpretation criteria we used to prepare the two landslide inventory maps regarding different environment conditions and landslide types.
F. Ardizzone (1), F. Guzzetti (1), C. Iadanza (2), M. Rossi (1), D. Spizzichino (2), and A. Trigila (2, 2012, Solid discharge and landslide activity at basin scale,
EGU General Assembly 2012, Vienna, 22-27/04/2012,
Paola Reichenbach, Francesca Ardizzone, Mauro Cardinali, Ivan Marchesini, 2012, PROGRAMMA DI RICERCA-MODELLI E CARTE DI SUSCETTIBILITÀ DA FRANA TIPO SCORRIMENTO PER IL TERRITORIO DELLA REGIONE UMBRIA,
2012,
Dott.ssa Paola Reichenbach, Dott.ssa Francesca Ardizzone, Dott. Mauro Cardinali, Dott. Ivan Marchesini, 2012, Progetto Regione Umbria.Programma di ricerca relativo alle attività previste dal contratto per la realizzazione di modelli e carte di suscettibilità da frana tipo scorrimento per il territorio della regione Umbria,
2012,
Abstract
Il rapporto presenta in dettaglio l'attività prevista per la zonazione della suscettibilità da frana ...
Il rapporto presenta in dettaglio l'attività prevista per la zonazione della suscettibilità da frana di tipo scorrimento, da realizzare sia per le singole Zone di Allerta (ZA) regionali di Protezione Civile sia per tutto il territorio della Regione Umbria. Nel rapporto vengono indicati le informazioni geomorfologiche e litologiche necessarie per la preparazione dei modelli di suscettibilità.
Margarita Sanabria, Maria Teresa López Bault, Rosa María Mateos, Inmaculada García, Maria, Sura?a, Zbigniew Kowalski, Anna Piatkowska, Marek Graniczny, Francesca Ardizzone, Paola Reichenbach, Hugo Raetzo, Nicola Casagli, Sandro Moretti, Magdalena Czarnogorska, Andrea Ciampalini, Chiara Del Ventisette, 2012, Progetto DORIS.D6.1 Selected test sites and geo-database,
2012,
Abstract
The deliverable summarizes the data available for the test sites selected for the project. ...
The deliverable summarizes the data available for the test sites selected for the project.
Paola Reichenbach, Francesca Ardizzone, Alessandro Mondini, Michele Manunta, Fabiana Calò, Silvia Bianchini
Federica Bardi, Federico Di Traglia, Andrea Ciampalini, Zbigniew Kowalski, Maria Surala, 2012, Progetto DORIS.D5.5 Ground-deformation velocity maps and time series by integration of satellite and ground-based remote sensing,
2012,
Abstract
The deliverable illustrates the activities carried out for preparing the ground deformation and velocity maps ...
The deliverable illustrates the activities carried out for preparing the ground deformation and velocity maps based on SAR imagery.
Paola Reichenbach, Francesca Ardizzone, Alessandro Mondini, Michele Manunta, Fabiana Calò, Silvia Bianchini, Federica Bardi, Federico Di Traglia, Andrea Ciampalini, Zbigniew Kowalski, Maria Surala, Rosa María Mateos, Gerardo Herrera Garcia, Inmaculada Garcia Moreno, María Teresa López, Hugo Raetzo, Balázs Füsi, Károly Rádi, 2012, Progetto DORIS.D5.4 Ground-deformation velocity maps and time series by SAR satellite data,
2012,
Abstract
Deliverable 5.4 is the result of the activities carried out in the framework of the ...
Deliverable 5.4 is the result of the activities carried out in the framework of the task 5.4 "Ground deformation velocity maps and time series using SAR satellite data". In the test sites, operative chains for satellite SAR data processing have been implemented and applied to obtain near-real time information on the evolution of the ground deformation phenomena. DInSAR and PSInSAR technology have been exploited to study ground deformation induced by different phenomena including ground water exploitation, mining, and landslides. Velocity deformation maps and time series using SAR satellite data have been prepared to analyse and monitor large time intervals deformation phenomena, characterized by a temporal evolution of displacements.
Paola Reichenbach, Alessandro Mondini, Francesca Ardizzone, Mauro Cardinali, Mauro Rossi, Federica Fiorucci, Sara Del Conte, Federico Raspini, Chiara Del Ventisette, Sandro Moretti, Rosa María Mateos, Gerardo Herrera Garcia, Inmaculada Garcia Moreno, María Teresa López, Hugo Raetzo, Balázs Füsi, Károly Rádi, 2012, Progetto DORIS.D5.3 Landslide event maps (1:5.000),
2012,
Abstract
The deliverable shows, for some of the DORIS test sites tha preparation of a event ...
The deliverable shows, for some of the DORIS test sites tha preparation of a event landslide inventory map.
Paola Reichenbach, Francesca Ardizzone, Alessandro Mondini Zbigniew Kowalski, Maria Surala, Rosa María Mateos, Gerardo Herrera Garcia, Inmaculada Garcia Moreno, 2012, Progetto DORIS.D5.2 Local and detailed susceptibility maps (1:10.000),
2012,
Abstract
The report illustrates the methods used to prepare landslide susceptibility maps at different scales. ...
The report illustrates the methods used to prepare landslide susceptibility maps at different scales.
Sandro Moretti, Chiara Del Ventisette, Andrea Ciampalini, Francesca Garfagnoli, Deodato Tapete, Silvia Bianchini, William Frodella, Giovanni Forzieri, Francesca Ardizzone, 2012, Progetto DORIS.D3.5 Integration of optical-VHR and SAR data,
2012,
Abstract
The report illustrates the activities carried out for integrating two differents type of satellite images, ...
The report illustrates the activities carried out for integrating two differents type of satellite images, optical and radar images.
Adele Manzella, Eugenio Trumpy, Nicola Lopez, Francesca Ardizzone, Donato Maio, 2012, Web-GIS VIGOR,
2012,
Abstract
Il WebGIS del progetto VIGOR è accessibile tramite il sito web di progetto tramite ...
Il WebGIS del progetto VIGOR è accessibile tramite il sito web di progetto tramite la pagina >prodotti. L'accesso al web GIS è consentito liberamente inserendo come nome utente e password "visitor" e "visitor". Il webGIS contiene tutto il materiale cartografico elaborato dal progetto VIGOR, sono infatti disponibili i layer geografici degli 8 siti di dettaglio studiati nel progetto VIGOR nonchè le carte di potenziale geotermico regionale profondo e superficiale insieme alle carte di temperatura a varia profondità.
Il servizio webGIS offre anche la possibilità di confrontare le mappe prodotte in VIGOR con quella del fabbisogno termico elaborata nell'ambito del progetto europeo GeoDH dal The Strategic Research Centre for 4 th Generation District Heating (4DH). Aalborg University, Denmark. http_//www.4dh.dk (Connolly et al, 2013, 2014).
Adele Manzella, Eugenio Trumpy, Francesca Ardizzone, Nicola Lopez, Ivan Marchesini, Nicola Pelosi, Barbara Inversi, Federica Caiozzi, Pasquale Iaquinta, 2012, Catalogo Metadati VIGOR,
2012,
Abstract
Il catalogo dei metadati del progetto VIGOR è disponibile all'URL: http_//150.145.141.99/geonetwork/srv/eng/main.home
I metadati descrivono i ...
Il catalogo dei metadati del progetto VIGOR è disponibile all'URL: http_//150.145.141.99/geonetwork/srv/eng/main.home
I metadati descrivono i dati geografici utilizzati e prodotti dal progetto. I dati utilizzati per ottenere i risultati sono disponibili solo ai partner di progetto previa autenticazione, metre i prodotti realizzati nell'ambito del progetto sono disponibili sia in visualizzazione che in download per qualsiasi utente.
Le schede metadato sono organizzate in una serie di categorie che consentono una veloce operazione di ricerca su base tematica (es. tematiche, geologia, idrogeologia, geochimica, geofisica, geotermia) o sulla scala di lavoro (es. Calabria, Campania, Puglia, Sicilia, gli 8 siti di studio di dettaglio).
S. Melzner (1), G.M. Stock (2), and P. Reichenbach (3), 2012, Back-analysis of rockfall events using 3D trajectory simulation models,
Geophysical research abstracts (Online) 14 (2012).,
Paola Reichenbach (CNR-IRPI), Paolo Bitonto (TERN), 2012, D5.7 Interoperable Spatial Data Infrastructure (SDI),
2012,
Silvia Peruccacci, 2012, Soglie pluviometriche per la previsione di fenomeni franosi,
Expo-emergenze, Bastia (PG), 09/02/2012,
Peruccacci S, Brunetti MT, Gariano, SL, Melillo M, Guzzetti F, 2012, Definizione di soglie pluviometriche per la regione Sicilia,
2012,
Mergili Martin, Marchesini Ivan, Rossi Mauro, Guzzetti Fausto, Fellin Wolfgang, 2012, r.rotstab: a GRASS-based deterministic model for deep-seated landslide susceptibility analysis over large areas,
OGRS 2012 (Open Source Geospatial Research & Education Symposium), Yverdon Les Bains (CH), 24-26 ottobre 2012,
S. Peruccacci (1), M.T. Brunetti (1,2), S. Luciani (1,2), C. Vennari (2), F. Ungaro (3), M.C. Calzolari (3), and F.
Guzzetti (1), 2012, Influence of topography and soil type on rainfall thresholds for the possible initiation of shallow landslides in central Italy,
Geophysical research abstracts (Online) 14 (2012).,
Abstract
In Italy, rainfall induced shallow landslides cause casualties every year, and represent a serious hazard ...
In Italy, rainfall induced shallow landslides cause casualties every year, and represent a serious hazard to the
population. As a result, the prediction of shallow slope failures triggered by intense or prolonged rainfall is of
primary importance for decision makers and civil protection authorities. At the national and the regional scales,
the prediction of the possible occurrence of rainfall induced shallow landslides is achieved by comparing rainfall
measurements and estimates with empirical rainfall thresholds, established through the analysis of past rainfall
events that have resulted in slope instabilities. Using multiple sources of information (including newspapers and
fire brigade reports), we have updated an historical catalogue listing > 500 rainfall events that have resulted in
documented landslides in the Abruzzo, Marche and Umbria regions, central Italy, between 2002 and 2011. We
have exploited this catalogue to determine new cumulated event rainfall - rainfall duration (ED) thresholds for
the possible occurrence of slope failures in central Italy. It is known that the local topographical (morphological),
lithological, soil and climatic settings condition the occurrence and spatial distribution of shallow landslides in an
area. For this work, we have exploited the catalogue of rainfall events with landslides to investigate the role of
morphology and soil types in the cumulated amount (E) and the duration (D) of the rainfall that has resulted in
shallow landslides in our study area, in the 10-year considered period. For the purpose, we have subdivided the
study area in 3 topographic sub-divisions and 7 regional soil domains, and we have analysed the (D,E) rainfall
conditions in the two different terrain classifications. Adopting a Frequentist statistical method already used to define
lithological and climatic thresholds in the study area, and their associated uncertainties, we have defined new
ED rainfall thresholds for possible landslide occurrence for the individual topographic sub-divisions and regional
soil domains. The new thresholds were compared with the existing geographical, lithological, and climatological
thresholds in the same study area. We expect the results of this study to contribute to the understanding of the
influence of topography and soil characteristics on the occurrence and spatial pattern of rainfall induced shallow
landslides in central Italy. We further expect that the new topographic and soil thresholds can improve the ability
to forecast shallow landslides in central Italy, and in neighbouring and distant areas characterized by similar
morphological and soil settings.
Lacava, T.a , Matgen, P.b , Brocca, L.c , Bittelli, M.d , Pergola, N.a , Moramarco, T.c , Tramutoli, V.e, 2012, A first assessment of the SMOS soil moisture product with in situ and modeled data in Italy and Luxembourg,
IEEE transactions on geoscience and remote sensing 50 (2012): 1612–1622. doi_10.1109/TGRS.2012.2186819,
DOI: 10.1109%2FTGRS.2012.2186819
Abstract
The European Space Agency Soil Moisture and Ocean Salinity (SMOS) mission was launched on November ...
The European Space Agency Soil Moisture and Ocean Salinity (SMOS) mission was launched on November 2, 2009. Providing accurate soil moisture (SM) estimation is one of its main scientific objectives. Since the end of the commissioning phase, preliminary global SMOS SM data [Level 2 (L2) product] are distributed to users. In this paper, we carried out a first assessment of the reliability of this product through a comparison with in situ observed and modeled SM over three different sites_ One is located in Luxemburg, and two are located in Italy. The period from August 1, 2010, to July 1, 2011, has been analyzed, giving us the opportunity to evaluate the satellite response to different SM states. The selected period is important for hydrological predictions as it is typically characterized by a sequence of transitions from dry to wet and from wet to dry conditions. In order to compare SMOS and ground SM measurements, a two-step approach has been applied. First, an exponential filter has been applied to approximate root-zone SM, and second, a cumulative distribution function matching has been employed to remove systematic differences between satellite and in situ observations and model simulations of SM. Our results indicate rather good reliability of the filtered and bias-corrected SM estimates derived from the first SMOS L2 products. Bearing in mind that an updated/advanced version of the SMOS SM product has been recently produced, our preliminary results already seem to confirm the potential of SMOS for monitoring of water in soils
T. Lacava, L. Brocca, G. Calice, F. Melone, T. Moramarco, N. Pergola, V. Tramutoli, 2012, Monitoraggio delle variazioni del contenuto in acqua dei suoli tramite dati AMSU,
CNR Highlights 2010-2011, pp. 63–63, 2012,
Brocca, L., Tullo, T., Melone, F., Moramarco, T., Morbidelli, R., 2012, Catchment scale soil moisture spatial-temporal variability,
Journal of hydrology (Amst.) 422-423 (2012): 63–75. doi_10.1016/j.jhydrol.2011.12.039,
DOI: 10.1016%2Fj.jhydrol.2011.12.039
Abstract
The characterization of the spatial-temporal variability of soil moisture is of paramount importance in many ...
The characterization of the spatial-temporal variability of soil moisture is of paramount importance in many scientific fields and operational applications. However, due to the high variability of soil moisture, its monitoring over large areas and for extended periods through in-situ point measurements is not straightforward. Usually, in the scientific literature, soil moisture variability has been investigated over short periods and in large areas or over long periods but in small areas. In this study, an effort to understanding soil moisture variability at catchment scale (> 100 km2), which is the size needed for some hydrological applications and for remote sensing validation analysis, is done. Specifically, measurements were carried out in two adjacent areas located in central Italy with extension of 178 and 242 km2 and over a period of 1 year (35 sampling days) with almost weekly frequency except for the summer period because of soil hardness. For each area, 46 sites were monitored and, for each site, 3 measurements were performed to obtain reliable soil moisture estimates. Soil moisture was measured with a portable Time Domain Reflectometer for a layer depth of 0-15 cm. A statistical and temporal stability analysis is employed to assess the space-time variability of soil moisture at local and catchment scale. Moreover, by comparing the results with those obtained in previous studies conducted in the same study area, a synthesis of soil moisture variability for a range of spatial scales, from few square metres to several square kilometres, is attempted. For the investigated area, the two main findings inferred are_ 1) the spatial variability of soil moisture increases with the area up to ~10 km2 and then remains quite constant with an average coefficient of variation equal to ~0.20; 2) regardless of the areal extension, the soil moisture exhibits temporal stability features and, hence, few measurements can be used to infer areal mean values with a good accuracy (determination coefficient higher than 0.88). These insights based on in-situ soil moisture observations corroborate the opportunity to use point information for the validation of coarse resolution satellite images. Moreover, the feasibility to use coarse resolution data for hydrological applications in small to medium sized catchments is confirmed.
Brocca, L., Ponziani, F., Moramarco, T., Melone, F., Berni, N., Wagner, W., 2012, Improving landslide forecasting using ASCAT-derived soil moisture data_ A case study of the torgiovannetto landslide in central Italy,
Remote sensing (Basel) 4 (2012): 1232–1244. doi_10.3390/rs4051232,
DOI: 10.3390%2Frs4051232
Abstract
Predicting the spatial and temporal occurrence of rainfall triggered landslides represents an important scientific and ...
Predicting the spatial and temporal occurrence of rainfall triggered landslides represents an important scientific and operational issue due to the high threat that they pose to human life and property. This study investigates the relationship between rainfall, soil moisture conditions and landslide movement by using recorded movements of a rock slope located in central Italy, the Torgiovannetto landslide. This landslide is a very large rock slide, threatening county and state roads. Data acquired by a network of extensometers and a meteorological station clearly indicate that the movements of the unstable wedge, first detected in 2003, are still proceeding and the alternate phases of quiescence and reactivation are associated with rainfall patterns. By using a multiple linear regression approach, the opening of the tension cracks (as recorded by the extensometers) as a function of rainfall and soil moisture conditions prior the occurrence of rainfall, are predicted for the period 2007-2009. Specifically, soil moisture indicators are obtained through the Soil Water Index, SWI, a product derived by the Advanced SCATterometer (ASCAT) on board the MetOp (Meteorological Operational) satellite and by an Antecedent Precipitation Index, API. Results indicate that the regression performance (in terms of correlation coefficient, r) significantly enhances if an indicator of the soil moisture conditions is included. Specifically, r is equal to 0.40 when only rainfall is used as a predictor variable and increases to r = 0.68 and r = 0.85 if the API and the SWI are used respectively. Therefore, the coarse spatial resolution (25 km) of satellite data notwithstanding, the ASCAT SWI is found to be very useful for the prediction of landslide movements on a local scale. These findings, although valid for a specific area, present new opportunities for the effective use of satellite-derived soil moisture estimates to improve landslide forecasting.
Penna, D., van Meerveld, H.J., Brocca, L., Mantese, N., Borga, M., Dalla Fontana, G., 2012, Topographic controls on water table and soil moisture dynamics in a small alpine catchment. In_ V. V,
Studies of Hydrological Processes in Research Basins_ Current Challenges and Prospects, pp. 85–88, 2012,
Brocca, L., Melone, F., Moramarco, T., Penna, D., Borga, M., Matgen, P., Gumuzzio, A., Martinez-Fernández, J., Wagner, W., 2012, Soil moisture monitoring in small experimental basins through remote sensing observations,
Studies of Hydrological Processes in Research Basins_ Current Challenges and Prospects, edited by V. Vuglinsky, Z. Kopaliani, S. Zhuravin, pp. 89–93, 2012,
Lacava T., Brocca, L., Faruolo M., Matgen P., Moramarco T., Pergola N., Tramutoli V., 2012, A multi-sensor (SMOS, AMSR-E and ASCAT) satellite-based soil moisture products inter-comparison,
32nd IEEE International Geoscience and Remote Sensing Symposium, IGARSS, pp. 1135–1138, Munich, GERMANY, Munich;22 July 2012through27 July 2012,
Abstract
Soil Moisture (SM), being one of the main variables within the system that controls the ...
Soil Moisture (SM), being one of the main variables within the system that controls the hydrological interactions among soil, vegetation and atmosphere, plays a key role in the water cycle. Satellite systems, both active and passive, have already demonstrated their capability to provide reliable SM measurements. The European Space Agency (ESA) Soil Moisture and Ocean Salinity (SMOS) mission, launched in November 2009, was the first specific SM satellite mission. In this work we assessed the capability of SMOS data to accurately capture SM dynamics over a long time period by comparing them with in situ observations. To better assess the performance of such results, they were also compared with those obtained with alternative satellite-based SM products, considering in particular those generated by Advanced Microwave Sounding Radiometer (AMSR-E) and Advanced SCATterometer (ASCAT) data.
Camici, S., Tarpanelli, A., Brocca, L., Melone, F., Moramarco, T., 2012, Impact of climate change on discharge of catchments in central Italy under different climate scenarios,
Proc Int. Conf. 5th International Perspective on Water Resources & the Environment (IPWE 2012), 2012,
Lacava T., Brocca L., Coviello I., Faruolo M., Melone F., Moramarco T., Pergola N., Tramutoli V., 2012, Soil moisture variability estimation through AMSU radiometer,
European Journal of Remote Sensing 45 (2012): 89–97. doi_10.5721/EuJRS20124509,
DOI: 10.5721%2FEuJRS20124509
Abstract
The monitoring of soil moisture (SM) can be performed through remote sensing technologies. Among the ...
The monitoring of soil moisture (SM) can be performed through remote sensing technologies. Among the operational microwave radiometers potentially able to provide information about SM and its variability in the space-time domain, in this work the capability of the AMSU (Advanced Microwave Sounding Unit) sensor has been investigated. In particular, SM information, achieved implementing two different AMSU-based indices, has been compared with both in situ measured and modeled observations for several sites spread out all over Italy. The results indicate that the AMSU sensor can be considered as a useful tool to provide quite reliable information about SM variability, mainly if its high temporal resolution is taken into account.
Morbidelli, R., Corradini, C., Saltalippi, C., Brocca, L., 2012, Initial soil water content as input to field-scale infiltration and surface runoff models,
Water resources management 26 (2012): 1793–1807. doi_10.1007/s11269-012-9986-3,
DOI: 10.1007%2Fs11269-012-9986-3
Calamita G., Brocca L., Perrone A., Piscitelli S., Lapenna V., Melone F., Moramarco T., 2012, Electrical resistivity and TDR methods for soil moisture estimation in Central Italy test-sites,
Journal of hydrology (Amst.) 454-455 (2012): 101–112. doi_10.1016/j.jhydrol.2012.06.001,
DOI: 10.1016%2Fj.jhydrol.2012.06.001
Abstract
In this study, the feasibility of the resistivity method for the study of the spatial ...
In this study, the feasibility of the resistivity method for the study of the spatial and temporal soil moisture variations in the Vallaccia catchment (central Italy), covering an area of about 56km 2, was investigated. Correlation and regression analyses were performed over a 1year data set of simultaneous soil electrical resistivity and soil moisture measurements, acquired in eight different sites with a Resistivimeter Syscal Junior and a portable Time Domain Reflectometer (TDR), respectively. Measurements acquired in-time by continuous Frequency Domain Reflectometer (FDR) sensors were also used and compared with simultaneous resistivity measurements. The statistical analyses were conducted not only for the whole data set, but also separately for each sampling day, for each sampling site and considering spatially averaged data. Results showed a good correlation between resistivity and soil moisture measurements, revealing the capability of resistivity measurements to infer soil moisture spatial and temporal variability with a root mean square error equal, on average, to 4.4% vol/vol. In comparison with TDR, the resistivity method gives information integrated on a greater volume of soil and the measurements are easier and quicker to be carried out. Therefore, this method can be considered as an alternative tool to be employed for qualitative and quantitative soil moisture monitoring in small to medium catchments.
Tramblay, Y., Bouaicha, R., Brocca, L., Dorigo, W., Bouvier, C., Camici, S., Servat, E., 2012, Estimation of antecedent wetness conditions for flood modelling in Northern Morocco,
Hydrology and earth system sciences (Online) 16 (2012): 4375–4386. doi_10.5194/hess-16-4375-2012,
DOI: 10.5194%2Fhess-16-4375-2012
Brocca, L., Moramarco, T., Melone, F., Wagner, W., Hasenauer, S., Hahn, S., 2012, Assimilation of surface and root-zone ASCAT soil moisture products into rainfall-runoff modelling,
IEEE transactions on geoscience and remote sensing 50 (2012): 2542–2555. doi_10.1109/TGRS.2011.2177468,
DOI: 10.1109%2FTGRS.2011.2177468
Corato G. Corradini C., Barbetta S., Brocca L., Melone F., Moramarco T., 2012, Validazione ed elaborazione dati idro-meteorologici, con aggiornamento scale di deflusso e caratteristiche topografiche delle sezioni idrometriche, per predisposizione Annali Idrologici 2006-2008; potenziamento rete e strumentazione di monitoraggio – Relazione Finale,
2012,
Barbetta S., Brocca L., Corradini C., Melone F., Moramarco T., 2012, Il misuratore di portata di Orvieto_ analisi dei dati acquisiti e valutazione dell’accuratezza della misura – Novembre 2011-Aprile 2012,
2012,
S. Barbetta, F. Melone, A. Tarpanelli, T. Moramarco, 2012, STUDIO DI FATTIBILITÀ PER L’UTILIZZO DI DATI DI LIVELLO DA ALTIMETRO SATELLITARE PER LA STIMA DELLA PORTATA IN SITI NON STRUMENTATI_ IL CASO DEL FIUME PO A PONTELAGOSCURO,
XXXIII Convegno Nazionale di Idraulica e Costruzioni Idrauliche, 2012,
A. Tarpanelli, C. Pandolfo, S. Barbetta, N. Berni, T. Moramarco, R. Morbidelli, 2012, The disaster caused by the spillway failure of the Montedoglio dam in central Itraly,
XXXIII Convegno Nazionale di Idraulica e Costruzioni Idrauliche, 2012,
S. Alvisi, M. Franchini, S. Barbetta, F. Melone, T. Moramarco, 2012, A grey-based methodology for representing uncertainty in discharge measurements at a gauged river site,
, 2012,
Abstract
The velocity-area method and entropy method for assessing with uncertainty discharge measurements at a gauged ...
The velocity-area method and entropy method for assessing with uncertainty discharge measurements at a gauged river site are analysed and compared; uncertainty is represented through the grey number technique. Two different approaches for greyfication of both the methods are presented. In the first approach, the uncertainty affecting each measurement used to estimate the discharge is characterized by a grey number_ all the grey uncertainty components are then combined through the grey mathematics. In the second approach, greyfication is applied to the relationship expressing the total uncertainty on the discharge measurement, provided by the EN ISO 748 guidelines.
Results of the application of the proposed methods to measurement data pertaining to a gauged Tiber river section show that the first greyfication approach leads to a larger discharge uncertainty estimate with respect to the latter. Furthermore, being the greyfication approach and the flow area quantification the same, the velocity-area and entropy methods provide nearly the same estimate of the uncertainty affecting the discharge measurements, i.e. the grey discharges they provide are fairly similar.
Moramarco T., Barbetta S., Tarpanelli A., Berni N., Pandolfo C., Pepi C., Morbidelli R., 2012, The disaster caused by the spillway failure of Montedoglio dam in central Italy,,
, 2012,
Abstract
A large number of dams were built in Italy in the first decades of the ...
A large number of dams were built in Italy in the first decades of the last century to supply the need of industrial, electric power, agricultural and drinking purposes. Among them, the Montedoglio dam, an important reservoir on the Tiber River located in central Italy, with a drainage area of 276 Km2. The dam is an earthfill structure and the maximum regulation level, the maximum storage level and the crest level are 394.60, 396.30 and 398.30 m a.s.l., respectively. The water storage volume, with the water at the height of the spillway, is approximately 153x106 m3.
On December 29, 2010 due to a sudden spillway collapse a huge water volume flooded the valley below the dam with high damage for the territory and population.
This paper attempts to assess the discharge hydrograph following up the Montedoglio spillway collapse and its routing along the Tiber River valley. The analysis is based on the recorded water reservoir level during the catastrophic event. The mathematical modelling of the reservoir depletion and flood propagation allowed advancing well-founded hypotheses on the temporal evolution of the breach formation. Furthermore, using a one-dimensional model for flood wave propagation, the roughness calibration for the main channel and floodplains has been addressed.
Silvia Barbetta, Marco Franchini, Florisa Melone, Tommaso Moramarco, 2012, Enhancement and comprehensive evaluation of the Rating Curve Model,
Journal of hydrology (Amst.) 464-465 (2012): 376–387. doi_10.1016/j.jhydrol.2012.07.027,
DOI: 10.1016%2Fj.jhydrol.2012.07.027
Abstract
This study presents an enhancement of the Rating Curve Model (RCM) proposed by Moramarco et ...
This study presents an enhancement of the Rating Curve Model (RCM) proposed by Moramarco et al.
(2005) which was initially formulated to assess discharge at a downstream river site where only stage
is monitored while the flow is recorded at an upstream section and significant lateral inflow can occur
along the river branch. The original model formulation is here of fact extended for upstream discharge
estimate by assuming the flow known at a downstream site and stages measured at both ends. In this
new configuration, the model can be applied to river reaches with negligible lateral inflow or to river
reaches with significant lateral contribution but where a kinematic flow regime holds. The new model
formulation is tested by considering two case studies, both selected in the Upper-Middle Tiber River
basin, in central Italy. For the first case study, the model is applied to 22 flood events observed along three
branches of the Tiber River with accurate rating curves at ends and having the same upstream river site.
RCM successfully simulates the discharge hydrographs observed at the upstream section closely capturing
both the peak rate and the time to peak, with average absolute errors less than 5% and 0.36 h, respectively.
The model accuracy is found independent of the intermediate basin area and, hence, of the lateral
inflow contribution. The rating curve computed in this upstream section by using the shortest reach is
slightly overestimated whereas the ones derived by applying the model to the other two reaches are
almost coincident and slightly underestimated, but for all of them the errors are less than 5%.
The second case study concerns the estimation of the upstream rating curve at a river site, where discharge
measurements are available for very low stages alone, starting from the flow known at two different
downstream equipped sections. The RCM application to recorded flood events provides two very
similar stage-discharge relationships with a maximum difference, between the reproduced rating curves,
of about 5 m3/s for the higher stage values.
Moreover, the RCM accuracy is shown to be satisfactory for river reaches located in physiographic
regions (northern Italy and Slovak Republic) different from the one used for the model development
and testing and considered in the two case studies mentioned above.
Finally, the model capability to take implicitly account of the unsteady effects (i.e. rating loop) is shown
through experimental data recorded by an ultrasonic flowmeter at a gauged site of the Tiber River as well
as by considering a numerical test.
Antronico L., Terranova O., Torri D., 2012, Investigation on sediment erosion and water runoff by means of simulated rainfall in Calabria (southern Italy),
EGU General Assembly 2012, Vienna, Austria, 22 - 27 April 2012,
Guzzetti, F.
Polemio, M., 2012, Il rischio idrogeologico in Italia e il ruolo della ricerca scientifica,
Geologia dell'ambiente Suppl. n. 2 (2012).,
Abstract
In Italia, le frane e le inondazioni sono fenomeni diffusi, ricorrenti e pericolosi. Fra il ...
In Italia, le frane e le inondazioni sono fenomeni diffusi, ricorrenti e pericolosi. Fra il 1960 e il 2011 ci sono stati almeno 789 eventi di frana che hanno prodotto oltre 5000 vittime (di cui 3417 morti e 15 dispersi) in 522 comuni (6,4% del totale). Nello stesso periodo si sono verificati almeno 505 eventi d'inondazione che hanno prodotto più di 1700 vittime (di 753 morti e 68 dispersi), in 372 comuni (4,6% del totale). Fra il 2005 e il 2011, si sono avuti 82 eventi di frana che hanno prodotto oltre 480 vittime (101 morti, 6 dispersi, 374 feriti) in 70 comuni, e 39 inondazioni in altrettanti comuni con 89 vittime (59 morti, 1 disperso, 29 feriti). Nel periodo 2005-2011 tutte le Regioni hanno sofferto almeno un evento di frana o d'inondazione con vittime, a conferma della diffusione geografica del rischio geo-idrologico. Le cifre dimostrano inequivocabilmente come l'impatto che gli eventi geo-idrologici hanno sulla popolazione sia un problema prioritariamente di rilevanza sociale che enfatizza la rilevanza delle attività scientifiche che possano conseguire risultati utili a ridurre gli effetti negativi.
Ghosh S., van Westen C.J., Carranza E.J.M., Jetten V.G., Cardinali M., Rossi M., Guzzetti F., 2012, Generating event-based landslide maps in a data-scarce Himalayan environment for estimating temporal, and magnitude probability.,
Engineering geology 128 (2012): 49–61. doi_10.1016/j.enggeo.2011.03.016,
DOI: 10.1016%2Fj.enggeo.2011.03.016
Matgen, P., Heitz, S., Hasenauer, S., Hissler, C., Brocca, L., Hoffmann, L., Wagner, W., Savenije, H.H.G., 2012, On the potential of METOP ASCAT-derived soil wetness indices as a new aperture for hydrological monitoring and prediction_ a field evaluation over Luxembourg.,
Hydrological processes (Print) 26 (2012): 2346–2359. doi_10.1002/hyp.8316,
DOI: 10.1002%2Fhyp.8316
Ponziani, F., Pandolfo, C., Stelluti, M., Berni, N., Brocca, L., Moramarco, T., 2012, Assessment of rainfall thresholds and soil moisture modeling for operational hydrogeological risk prevention in the Umbria region (central Italy).,
Landslides (Berl., Print) 9 (2012): 229–237. doi_10.1007/s10346-011-0287-3,
DOI: 10.1007%2Fs10346-011-0287-3
Peruccacci S., Brunetti M.T., Luciani S., Vennari C., Guzzetti F., 2012, Lithological and seasonal control on rainfall thresholds for the possible initiation of landslides in central Italy,
Geomorphology (Amst.) 139-140 (2012): 79–90. doi_10.1016/j.geomorph.2011.10.005,
DOI: 10.1016%2Fj.geomorph.2011.10.005
Abstract
We compiled a catalogue of 442 rainfall events with landslides in the Abruzzo, Marche, and ...
We compiled a catalogue of 442 rainfall events with landslides in the Abruzzo, Marche, and Umbria regions, central Italy, between February 2002 and August 2010. For each event, we determined the duration D (in hours) and the cumulated (total) event rainfall E (in mm), using rainfall measurements obtained from a dense network of 150 rain gauges. Landslides were mapped as single points using Google Earth®, and were attributed a level of mapping accuracy P, in four classes (P1b1 km2, P10b10 km2, P100b100 km2, P300b300 km2). Using this information, we determined cumulated event rainfall-rainfall duration (ED) thresholds, which are entirely equivalent to rainfall intensity-duration (ID) thresholds, and avoid unnecessary conversions. To determine the ED thresholds, we modified a statistical method first proposed to determine ID thresholds. Adopting a bootstrapping statistical technique, we expanded the method to determine the uncertainty associated with the parameters that define the power law threshold model, and the sensitivity of the thresholds to the number of (D,E) data points in the empirical data set. We determined ED thresholds for 1% and 5% exceedance probability levels_ (i) for the entire study area, and for the three individual regions in the study area (Abruzzo, Marche, and Umbria); (ii) for three main lithological domains in the study area (post-orogenic sediments, flysch deposits, carbonate rocks); and (iii) for two seasonal periods (May-September, October-April). Comparison of the ED thresholds indicates that the cumulated amount of rainfall necessary to trigger landslides in flysch deposits is larger than in post-orogenic sediments and carbonate rocks. However, the ED thresholds for post-orogenic sediments and carbonate rocks were statistically indistinguishable in the study area. Also, the seasonal thresholds were statistically different for rainfall durations shorter than 12 h and longer than 100 h, but were indistinguishable in the range 12bDb100 h. The results obtained are directly applicable to landslide forecasting based on empirical rainfall thresholds, and have implications for landslide hazard and risk assessment, as well as for landslide erosion and landscape evolution studies, both in the study area and in the neighboring regions.
Francesca Di Matteo, Monica Proto, Angela Perrone, Frida Clerissi, 2011, DORIS – D1.1 Project Management Plan and Contact Database,
2011,
Abstract
. ...
.
Salvati, Paola and Marchesini, Ivan and Balducci, Vinicio and Bianchi, Cinzia and Guzzetti, Fausto, 2011, Management and publication of a continuously updated catalogue of geo-hydrological events with consequences to the population in Italy.,
The Second World Landslide Forum Abstracts, 3/10/2011-9/10/2011,
Abstract
Landslides and floods are widespread and recurrent phenomena in Italy, where they cause extensive damage ...
Landslides and floods are widespread and recurrent phenomena in Italy, where they cause extensive damage and
pose a severe threat to the population. To provide an estimate of geo-hydrological risk in Italy, a catalogue of
landslide and flood events that caused damage to the population was compiled from a variety of different
sources. These include the review of existing digital catalogues of historical events, supplemented by an
extensive search of archive, bibliographical and chronicle sources. The new catalogue covers the 1943-year
period from 68 AD to 2010, and lists 3,226 landslide events and 2,624 flood events that have resulted in deaths,
missing persons, injured people, and homeless. For each event in the catalogue, different type of information
was collected on the main physical features, as the precise or approximate date and site of occurrence, triggering
mechanism , temporal and spatial evolution, and on the exact damage to the population, as the number of death,
injured, missing and homeless. The research of geo-hydrological events and their consequence is a difficult, time
consuming expensive, and uncertain operation. When this information is available many application are possible
to determine the spatial and temporal frequency and the type and distribution of the damage. Such statistics are
the basics for qualitative or quantitative risk evaluation which is fundamental in the land use planning and in
civil protection fields. The management of data such as those described above must be made on storage systems
that can provide guarantees of stability, security, interoperability, high capacity and high performance. It is also
desirable that the system is able to handle geo-referenced data and that they are immediately available in the
form of mapping services. For this purpose CNR IRPI has put in place a relational database based on
PostgreSQL / PostGIS (an enterprise-class SQL database server with geographic extensions), a system for
publishing data through standard OGC services (based on GeoServer) and a WebGIS (developed in-house and
based on the services themselves). The system is implemented in 13 virtual machines on two host servers. To
ensure high performance and capacity the database has been built using a logic of replication and load balancing.
The data are edited by the operators, who access by alphanumeric and GIS clients, to the "master" database that
is placed on the first host. An asynchronous replication is triggered when there is even a small change in the
"master" database. The database replication takes place on two "slave" that are placed on a second host machine.
A pooler for PostgreSQL placed between a battery of six GeoServers and the two "slave" database distributes
the load of geographic call executed by GeoServers. A load balancer handles incoming calls to the six
GeoServer nodes. The WebGIS, in turn, queries and publishes the information layers provided by the load
balancer. This infrastructure, in addition to ensuring high capacity and performance, ensures that the data is
replicated on two separate physical machines, so that there is no risk of data loss in connection with possible
damage to hardware. The implemented system allows automatic updating and publication of maps relating the
sites where landslide and flood events occurred causing damage to the population.
