1,721,039 research outputs found

    Sisma Emilia 2012: Effetti geologici sismoindotti superficiali e fake news

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    Il contributo tratta degli effetti geologici sismoindotti superficiali causati dal terremoto che ha colpito l'Emilia nel maggio 2012 e delle fake news apparse in rete a seguito dell'evento. Con riferimento a queste ultime, gli autori sottolineano come solo un dialogo ed un confronto continui saranno in grado di fornire alla cittadinanza informazioni corrette in modo di evitare, tra l’altro, di considerare i vari casi di “fenomeni geologici particolari” come segnali precursori di terremoti e fornire alla popolazione corrette informazioni, tra cui consigli sul comportamento più appropriato da seguire in caso di scosse sismiche e di altri disastri naturali frequenti in Italia

    Neotectonic research in applied geomorphological studies.

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    The authors illustrate several methods of geomorphological and morpho-neotectonic analysis focused on different practical applications. The first case concerns the research that should be carried out immediately following a destructive seismic event. A second case is related to the planning of major civil engineering works such as power plants and dams, or to geothermal research. -from Author

    The natural reserve of the Secchia River flow regulation system: a place for flood mitigation and people amusement (Po Plain, Italy)

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    This work illustrates the Landscape Map of the Natural Reserve of the Secchia River which is located in the area of the flow regulation system of this river in the Po Plai

    Breve illustrazione di un contributo al sottoprogetto ILP "Carta del mondo delle principali faglie attive per l'Italia Settentrionale"

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    Viene brevemente illustrato il primo contributo italiano al sottoprogetto ILP World Map of Major Active Faults. che consiste nell'elaborazione di una Map of Active Faults in the Holocene (ultimi 10.000 anni b.P.)

    Gravitational slope deformations near the Abetone Pass (Tuscan-Emilian Apennines)

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    In this paper some Deep-seated Gravitational Slope Deformations (Dgsd), identified in the Rio delle Pozze valley near the Abetone Pass, are for the first time described. These deformations are developed in competent rock types (sandstones layers with argillite intercalations belonging to the Macigno Formation) and are characterised by a dominant structural control (NW-SE and SW-NE oriented faults). From the geomorphological viewpoint they show double ridges, trenches, concavities and reverse slopes. The Dgsd typologies correspond to rock flows (Sackungen). On the eastern slope of Monte Gomito (located in the adjacent Torrente Motte valley) the same geomorphological features shown by the Rio delle Pozze valley Dgsd have been surveyed. These landforms, which were analysed with respect to the structural characteristics of the zone, are here considered as the surface expression of an incipient rock slide. It is therefore an example of 'geomorphological convergence' within the framework of slope gravitational processes

    Il paesaggio geologico dell'Appennino emiliano: dalla fragilità alla valorizzazione territoriale.

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    L'Articolo illustra brevemente le caratteristiche fisiche del territorio dell'Appennino Emiliano che determinano i suoi diversi punti di forza ma anche di fragilità. In particolare descrive sinteticamente dal punto di vista geologico e geomorfologico le Valli del Torrente Parma e dell’alto Torrente Cedra che presentano alcuni tratti caratteristici che sono emersi nello sviluppo delle riflessioni e nelle azioni progettate durante i laboratori che hanno caratterizzato l’Edizione 2019 del Corso Materia Paesaggi

    Reformulation of the plane wave method to model photonic crystals

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    A new formulation of the plane-wave method to study the characteristics (dispersion curves and field patterns) of photonic crystal structures is proposed. The expression of the dielectric constant is written using the superposition of two regular lattices, the former for the perfect structure and the latter for the defects. This turns out to be simpler to implement than the classical one, based on the supercell concept. Results on mode coupling effects in two-dimensional photonic crystal waveguides are studied and successfully compared with those provided by a Finite Difference Time Domain method. In particular the approach is shown able to determine the existence of "mini-stop bands" and the field patterns of the various interfering modes. © 2003 Optical Society of America
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