Search results for " Oceano"
showing 10 items of 97 documents
Piecewise planar underwater mosaicing
2015
A commonly ignored problem in planar mosaics, yet often present in practice, is the selection of a reference homography reprojection frame where to attach the successive image frames of the mosaic. A bad choice for the reference frame can lead to severe distortions in the mosaic and can degenerate in incorrect configurations after some sequential frame concatenations. This problem is accentuated in uncontrolled underwater acquisition setups as those provided by AUVs or ROVs due to both the noisy trajectory of the acquisition vehicle — with roll and pitch shakes — and to the non-flat nature of the seabed which tends to break the planarity assumption implicit in the mosaic construction. These…
Ocean’s Child Worshipping Nemesis in Ancient Rhamnous
2019
In un passo della Periegesi (i, 33, 2-4), Pausania riferisce che la statua di Nemesis, nel demo attico di Ramnunte, era opera di Fidia ed era stata scolpita da un blocco di marmo pario che i Persiani portarono con loro all’epoca della battaglia di Maratona per farne un trofeo. Essi erano infatti convinti che avrebbero conquistato Atene. Il Periegeta descrive nel dettaglio l’agalma della dea, definendola la più implacabile contro gli hybristai. La statua portava sulla testa una corona decorata con cervi e piccoli agalmata di Nike. Nella mano sinistra aveva un ramo di melo, mentre nella destra una phiale sulla quale erano rappresentati degli Etiopi. Pausania dice di non essere stato in grado …
Coupling a hydro-maritime model and remotely sensed techniques to assess the shoreline positioning uncertainty: the Marsala coast study case
2010
The severe erosion phenomena affecting the Mediterranean coasts are strictly related to geophysical characteristics and socio-economic pressures. This suggests the need of monitoring and modelling the phenomenon in order to quantify its strength. In fact, the shoreline position, as well as its temporal evolution, provides important information for designing defence structures and for the development of a coastal management plan. The shoreline has a dynamic nature as it changes both in the short and long period. Those changes are caused by geo-morphological (e.g. bars and barrier island development etc.) and hydrodynamic (wave motion, tides and flows) processes, as well as by sudden and fast…
Influenza degli inquinanti nella distribuzione dei foraminiferi nei sedimenti marini (Progetto Aspracoast)
2008
Spatio-Temporal Assessment of the European Hake (Merluccius merluccius) Recruits in the Northern Iberian Peninsula
2021
14 pages, 9 figures, 3 tables.-- This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY)
Introducing Thermal Inertia for Monitoring Snowmelt Processes With Remote Sensing
2019
Thermal inertia has been successfully used in remote sensing applications that span from geology, geomorphology to hydrology. In this paper, we propose the use of thermal inertia for describing snow dynamics. Two different formulations of thermal inertia were tested using experimental and simulated data related to snowpack dynamics. Experimental data were acquired between 2012 and 2017 from an automatic weather station located in the western Italian Alps at 2,160 m. Simulations were obtained using the one‐dimensional multilayer Crocus model. Results provided evidences that snowmelt phases can be recognized, and average snowpack density can be estimated reasonably well from thermal inertia o…
Sun-induced chlorophyll fluorescence II: Review of passive measurement setups, protocols, and their application at the leaf to canopy level
2019
Imaging and non-imaging spectroscopy employed in the field and from aircraft is frequently used to assess biochemical, structural, and functional plant traits, as well as their dynamics in an environmental matrix. With the increasing availability of high-resolution spectroradiometers, it has become feasible to measure fine spectral features, such as those needed to estimate sun-induced chlorophyll fluorescence (F), which is a signal related to the photosynthetic process of plants. The measurement of F requires highly accurate and precise radiance measurements in combination with very sophisticated measurement protocols. Additionally, because F has a highly dynamic nature (compared with othe…
Ophichthids (Ophichthidae: Anguilliformes) within the body cavity of marine fishes: pseudoparasites?
2011
4 pages, 2 figures, 1 table
RAPPORTO DI FINE CAMPAGNA Campagna Oceanografica I-AMICA_2013_01 Progetto PON I-AMICA OR.4.4 Foce del Fiume Volturno Golfo di Gaeta, Mar Tirreno
2013
La campagna oceanografica I-AMICA_2013_01, svoltasi dal 29 gennaio al 11 febbraio 2013, costituisce una parte integrante delle attività di ricerca previste dall’Obiettivo Realizzativo OR4 - Attività 4.4 (Processi interfaccia biosfera idrosfera e funzionalità degli ecosistemi costieri) del Progetto PON03 di potenziamento strutturale I-AMICA (Infrastruttura di Alta tecnologia per il Monitoraggio Integrato Climatico-Ambientale; http://www.i-amica.it). L’attività di ricerca di monitoraggio ambientale integrato della foce del Fiume Volturno, attraverso studi del fondo mare e della colonna d’acqua, vuole chiarire quali interazioni incorrono a scala stagionale tra il suddetto fiume, che interessa …
Coastal New Particle Formation: A Review of the Current State-Of-The-Art
2005
Environmental Context.Atmospheric aerosols play an important role in determining the earth’s radiative budget, climate change and air quality levels. Much effort has been spent on quantifying the impact of aerosols on climate change; however, the largest gap in our knowledge relates to quantifying natural aerosol systems and the new particle formation process associated with these systems. The marine aerosol system is of particular interest due to the 70% ocean coverage of the earth’s surface. Coastal new particle formation events are though to be more frequent and of stronger intensity compared with open ocean events and thus have been studied in detail to identify possible processes lead…