506 research outputs found
Tsunami hazard scenarios in the Adriatic Sea domain
No full textThe tsunami phenomenon is mainly detected in oceanic domains but it can also occur in small basins as the Adriatic Sea. The presence of great waves has been recorded a few times in the past centuries on the Adriatic shorelines, therefore this suggests the idea to evaluate which could be the maximum amplitude reached by a possible future tsunami event. In this framework we calculate several synthetic mareograms applying to the shallow water basin case both the theory of modal summation by Panza et al. (2000) and the theory of the Green's function by Yanovskaya et al. (2003). The first is applied to the case of tsunamis generated by an offshore source, the second to the case of tsunamis generated by an inland source. Both kinds of tsunamigenic events did already occur in the Adriatic domain, as witnessed in many catalogues (Caputo and Faita, 1984; Bedosti and Caputo, 1986; Tinti et al., 2004) and also pointed out in the recent "Catalogue of reported tsunami events in the Adriatic Sea" (see Appendix).
We calculate synthetic mareograms varying those parameters which are the most influencing in tsunami generation, such as magnitude, focal depth, water layer thickness, etc., in order to estimate the expected values of tsunami maximum amplitude and arrival time, in the whole Adriatic basin, for the selected scenarios
Bibliothèque du conducteur de travaux publics : ensemble des connaissances indispensables aux conducteurs des ponts et chausées et conducteurs municipaux, agents voyers ...
No full textContiene: Programme. Conditions de souscription. Abrégé de la table des matières des 70 volumes paru
La télégraphie sans fil la télémécanique et la téléphonie sans fil a la portée de tout le monde
No full textAnte
Optimization for nonlinear inverse problem
No full textThe non-linear inversion of geophysical data in general does not yield a unique solution, but a single model representing the investigated field, and is preferred for an easy geological interpretation of observations.
The analyzed region is constituted by a number of sub-regions where multi-valued non-linear inversion is applied, which leads to a multi-valued solution. Therefore, combining the values of the solution in each sub-region, many acceptable models are obtained for the entire region and this complicates the geological interpretation of geophysical investigations.
In this paper new methodologies are presented, capable of selecting one model among all acceptable ones, that satisfies different criteria of smoothness in the explored space of solutions. In this work we focus on the non-linear inversion of surface wave dispersion curves, which gives structural models of shear-wave velocity versus depth
Ports maritimes ...
No full textAntportCotén: T.I : mers, vents, ondes, vagues, marées, courants, Barres et deltas, dragages, protection des côtres, ports, fleuves et estuaires, phares, bouées, notions de cosmographie, de navigation et d'hidrographie, navires .- 576,16 p. -- T. II: procédés d'execution, travail a l'air comprimé, costruccion des jetées, moles et diques et ouvrages exterieures, utilisation des ports, Ecluses, murs de quais, fondations des murs de quais, accesoires des quais, fondatio des murs de l'aveir, canaux maritimes, ponts mobiles, ports naturels, de refuge, militaires, exemples de ports, prix, otes diverses .- 574, 16 p
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