On the potential of an RST-based analysis of the MODIS-derived chl-a product over Condor seamount and surrounding areas (Azores,NE Atlantic)     

Emanuele Ciancia  Clara Magalhães Loureiro  Ana Mendonça  Irina Coviello  Carmine Di Polito  Teodosio Lacava  Nicola Pergola  Valeria Satriano  Valerio Tramutoli  Ana Martins 《Ocean Dynamics》2016,66(9):1165-1180

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Rotating neutron stars: an invariant comparison of approximate and numerical space–time models     

Emanuele Berti  Frances White  Asimina Maniopoulou  Marco Bruni 《Monthly notices of the Royal Astronomical Society》2005,358(3):923-938

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A multidisciplinary approach for rock spreading and block sliding investigation in the north-western coast of Malta   总被引：2，自引：0，他引：2  

Matteo Mantovani  Stefano Devoto  Emanuele Forte  Arianna Mocnik  Alessandro Pasuto  Daniela Piacentini  Mauro Soldati 《Landslides》2013,10(5):611-622

Landslides are widespread along the north-western coast of the Island of Malta and are strictly linked to the structural setting. Exemplary cases of rock spreading and block sliding phenomena characterise this stretch of coast. They are favoured by the overposition of two different geological units widely outcropping there, the Blue Clay Formation and the Upper Coralline Limestone Formation. The latter forms a wide plateau, bordered by vertical cliffs. At the foot of the cliffs, clayey terrains crop out and develop gentle slopes covered by large blocks detached and moved by rock spreading and block sliding phenomena. These mass movements are favoured by the fragile behaviour of limestones, which cap clays, otherwise characterised by visco-plastic properties. In order to investigate the kinematics and the evolution of these types of coastal landslides, a multidisciplinary and multitechnical approach was applied on a study site, named Il-Prajjet, which provides a spectacular case of rock spreading evolving into block sliding. This paper illustrates the results achieved by means of different engineering geological and geophysical techniques allied with traditional detailed geomorphological survey and mapping. In particular, the surface displacements of the landslides were determined using long-term GPS observations, acquired approximately every 6 months, over a 4.5-year period. A network of GPS benchmarks were distributed on the edge of a limestone plateau affected by rock spreading and on a series of displaced blocks making up a large block slide, finally enabling the definition of the state of activity and the rates of movement to be performed. In addition, the results deriving from two continuous fissurimeters more recently installed at the edge of two persistent joints over the block sliding area are outlined, with reference to the correlation between variations of crack apertures and precipitation input. In order to identify main structural discontinuities and to reconstruct variability of underground surface contact between clays and overlying limestones, Resistivity Tomography profiles and GPR investigations were carried out. Finally, the results obtained by combining the outputs of geophysical surveys and different field monitoring activities can be considered a first step on which numerical models can be developed and validated, in order to assess landslide hazard and risk of this stretch of Maltese coastline.  相似文献   

Asymptotic stability of synchronous orbits for a gravitating viscoelastic sphere     

Dario Bambusi  Emanuele Haus 《Celestial Mechanics and Dynamical Astronomy》2012,114(3):255-277

We study the dynamics of a viscoelastic body whose shape and position evolve due to the gravitational forces exerted by a pointlike planet. We work in the quadrupole approximation. We consider the solution in which the center of mass of the body moves on a circular orbit, and the body rotates in a synchronous way about its axis, so that it always shows the same face to the planet as the Moon does with the Earth. We prove that if any internal deformation of the body dissipates some energy, then such an orbit is locally asymptotically stable. The proof is based on the construction of a suitable system of coordinates and on the use of LaSalle??s principle. A large part of the paper is devoted to the analysis of the kinematics of an elastic body interacting with a gravitational field. We think this could have some interest in itself.  相似文献   

Optimal redesign of environmental monitoring networks by using software MSANOS     

Emanuele Barca  Delia E. Bruno  Giuseppe Passarella 《Environmental Earth Sciences》2016,75(14):1082

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A simple method to help determine landslide susceptibility from spaceborne InSAR data: the Montescaglioso case study     

Tommaso Carlà  Federico Raspini  Emanuele Intrieri  Nicola Casagli 《Environmental Earth Sciences》2016,75(24):1492

On December 3, 2013, a large complex landslide was triggered SW of the town of Montescaglioso (Southern Italy), causing the destruction of roads, commercial buildings and private dwellings, as well as several direct and indirect economic losses. A set of interferometric ground measurements acquired by the Cosmo-SkyMed satellite constellation and processed by means of the SqueeSAR algorithm was used to study the pre-event slope displacements in the entire Montescaglioso municipal area. Data span from January 30, 2012, to December 2, 2013, and show average line-of-sight velocities of 1–10 mm/year in the slope sector ultimately affected by the collapse. In retrospect, a time series analysis of the radar targets was performed in order to identify and characterize all the slope instabilities in proximity of the town. This was based on the setup of characteristic thresholds of displacement. The procedure permitted to locate several areas which recurrently exceeded these previously established thresholds, in consistency with the amount of precipitation. In particular, the major source of potential hazard in the area was indeed found where the December 3, 2013, landslide eventually occurred. The results of this quick data processing technique were validated through comparison with two independently developed landslide maps. This simple method, which is not supposed to diminish the importance of geomorphologic field surveys, could improve both the accuracy and the update rate of landslide susceptibility maps. Not relying on arbitrary or empirically derived approaches, it has the advantage of computing statistically based thresholds specific for each time series. By indicating the slope sectors in higher need of deeper in situ investigation, more support could be provided to administrative bodies for the processes of risk assessment and management.  相似文献   

A BPR approach to hydrogeological risk management     

Maurizio Bevilacqua  Filippo Emanuele Ciarapica  Claudia Paciarotti 《Natural Hazards》2014,71(3):1995-2012

Every year, landslides and floods cause deaths, missing persons, injured people, evacuees, and homeless people. Serious damages to property and pollution are also produced. Lessons learn from landslides and flood disasters recently occurred show that flood and disaster management should be widely improved. This paper deals the problem of hydrogeological risk management from a logistic and a managerial point of view. The hydrological risk management is studied as an industrial process, and it is modeled by the IDEF0 language. The IDEF0 application provides a clear overview of the system and became a structured base for the re-engineering process. For each function of the process, the inputs, outputs, and necessary controls and resources have been identified. The use of the IDEF0 provides a simple and effective tool for the decision-making process. Starting from a realistic and efficient current state model, the process of re-engineering has been implemented. The main aim of the change introduced in the process is to improve the information management that it is a crucial point of the risk management.  相似文献   

Approximate matching of analytic and numerical solutions for rapidly rotating neutron stars     

Emanuele Berti †  Nikolaos Stergioulas 《Monthly notices of the Royal Astronomical Society》2004,350(4):1416-1430

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