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Last name: FEDERICI
First name: Bianca
Email: bianca.federici@unige.it
Institution: UNIGE
Links
PhD thesis on fluvial morphodynamics
La creazione di Modelli Digitali del Terreno (DTM) per morfologie complesse può risultare particolarmente delicata qualora i dati siano poco densi. Tuttavia spesso le campagne di misura risultano onerose. Nel presente lavoro è stato analizzato come ottimizzare il monitoraggio di un corso d'acqua intrecciato rilevato a terra con metodologia...
Nel presente lavoro è stata implementata una procedura per la realizzazione di Mappe di Inondazione Tsunami che permettano di individuare le aree potenzialmente interessate da allagamento nel caso si verifichi uno tsunami di altezza d'onda nota. In particolare, è stata valutata la massima risalita verticale dell'onda incidente sulla costa...
The present work is motivated by the observation (Mosley, 1976) that streamline divergence is one of the main causes of channel bifurcation in braided rivers. We then built a laboratory model of a braided river, and observed that the most common mechanism leading to the formation of channel bifurcations consists of the creation of a central bar...
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In the past, tsunami waves of considerable dimension hit Japan, Alaska, Hawaii, South America and South-East Asia. Also the Mediterraneo Sea is a geologically active area with characteristics suitable for tsunami occurring, particularly in correspondence of Italian and Greek coasts. In Italy in the last nine hundred years 71 tsunami happened,...
The more and more spread presence of GNSS Permanent Station Networks makes the satellite survey techniques more simpler, quicker and cheaper, allowing the technician to obtain easily sub-decimetric precisions. However, the result and, above all, the speed of GNSS survey campaign get an advantage out of accurate planning, especially where the...
Braided rivers produce flow confluences and divergences (diffluences) in roughly equal numbers, but braided river research has focused mainly on confluences. Divergences, however, are of equal importance dynamically: they are sites of formation of central bars and the development of flow divisions that can steer the flow toward one part of the...
La natura dell'instabilità delle barre fluviali viene analizzata rivisitando l'analisi di stabilità lineare di Colombini et al. (1987) alla luce del criterio di Briggs (1964) che consente di distinguere tra instabilità convettiva e assoluta. Fisicamente, se l'instabilità e' convettiva, l'evoluzione spazio-temporale di perturbazioni del fondo...
The present work proposes a new automatic procedure that, taking into account only easily available data (Landslide Inventory map, DTM, land use map and geological map), allows the creation of landslide hazard maps over large areas using multivariate statistical analysis. The procedure is devoted to slides and flows. The factors of instability...
This project has been developed within the First Degree Thesis in Environmental and Territory Engineering of Andrea Cervetto with cooperation of the "Comunità Montana Argentea". The main target of this work is the development of an open-source Geographic Information System (GIS) application as a tool for the planning and optimization of...
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A quick and economical survey is investigated to monitor the evolution of a braided river with ground topographic survey. Starting from synthetic DTM, different survey points and different interpolation methods are tested in a didactic approach to reproduce the braided river geometry. First of all, we tested a software used in the hydraulic...
The more and more spread presence of GNSS Permanent Station Networks makes the satellite survey techniques more simpler, quicker and cheaper, allowing the technician to obtain easily high precisions. However, the result and, above all, the speed of GNSS survey campaign get an advantage out of accurate planning, especially where the site to...
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The present work proposes an automatic procedure implemented in the GIS software GRASS to define potentially fluvial inundated areas, known the conformation of the territory surrounding the river by a DTM, and the water surface profile along the river axis calculated for given discharge through an one-dimensional hydraulic model such as...
Bar instability is recognized as the fundamental mechanism underlying the formation of large-scale forms of rivers. We show that the nature of such instability is convective rather than absolute. Such a result is obtained by revisiting the linear stability analysis of open-channel uniform flow over a cohesionless channel of Colombini et al....
We analyze bars in sandy rivers when a significant portion of the sediment load is carried in suspension. First, we investigate the ability of a depth-averaged formulation of both the hydrodynamics and sediment transport recently developed for slowly varying flows to capture the main mechanisms of sandbar formation. The exercise turns out to be...