93,449 research outputs found
Data for: Ecological specialization and population trends in European breeding birds
No full textDataset with information about avian species population trends (calculated on data provided in Stephens et al. 2016) and level of specialization for each species in several axes of ecological specialization (calculated following the procedure indicated in Morelli et al. 2019).Fields: Species; Max.trend; Min.trend; Mean.trend; SDTrend; no.countries; Trend_categories; Diet.specialization; Foraging.behav.specialization; Foraging.subst.specialization; Habitat.specialization; Nesting.site.specialization; Mean.specialization.References:Morelli, F., Benedetti, Y., Møller, A.P., Fuller, R.A., 2019. Measuring avian specialization. Ecol. Evol. 9, 8378–8386. doi:10.1002/ece3.5419Stephens, P.A., Mason, L.R., Green, R.E., Gregory, R.D., Sauer, J.R., Alison, J., Aunins, A., Brotons, L., Butchart, S.H.M., Campedelli, T., Chodkiewicz, T., Chylarecki, P., Crowe, O., Elts, J., Escandell, V., Foppen, R.P.B., Heldbjerg, H., Herrando, S., Husby, M., Jiguet, F., Lehikoinen, A., Lindström, Å., Noble, D.G., Paquet, J.-Y., Reif, J., Sattler, T., Szép, T., Teufelbauer, N., Trautmann, S., van Strien, A.J., van Turnhout, C.A.M., Vorisek, P., Willis, S.G., 2016. Consistent response of bird populations to climate change on two continents. Science 352, 84–87. doi:10.1126/science.aac485
Atmospheric response to a realistic coastal polynya in Terra Nova Bay (Antarctica) simulated by ETA model
No full textCoastal polynyas are areas of open water (and/or very thin ice) which form adjacent to coasts or blocking feature in polar regions during the wintertime, when the sea water is expected to be ice covered. They are thought to be maintained by strong offshore winds blowing over these area and/or by ocean currents. Sea ice is removed as it forms and drifted offshore. In polynya areas a direct contact is established between the relatively warm sea water and the cold, dry atmosphere. As a consequence, the physical characteristics of the atmospheric boundary layer change. The work presented here concerns a real polynya event in the region of Terra Nova Bay (TNB), Antarctica, where a recurring coastal polynya occurs nearby the Italian Antarctic Base. The aim is the study of atmospheric response to the presence of a open water area of realistic size by three-dimensional numerical simulations. Atmospheric numerical modelling is a fundamental tool for the study of air - polynya interactions in the remote polar regions, where observational data are difficult. The numerical model used for the simulations is a recent version of ETA model (Mesinger et al., 2006), with the addition of a piecewise linear advection for the wind field. ECMWF and NCEP data provided the initial and boundary conditions. A previous version of the model had already been successfully used in the Antarctic area (De Carolis et al, 2006, Casini and Morelli, 2007). As a first step to analyze the polynya event, numerical simulation was performed for the period from 12 to 17 July 2006 in order to study the development of the katabatic wind (Morelli and Casini, 2008; Morelli, 2008). Daily satellite images, concerning the period, display that a sea ice free area formed on 15 and 16 July, reaching its maximum extension of about 4000 km2 on 16 July (Morelli et al.,2007). In order to gain insight on the atmospheric response to open water area within a sea ice field, ETA model runs were carried out from 15 to 17 July 2006 both with and without the polynya (as derived by satellite image) included in the initial conditions. Results from these experiments will be presented. Simulations were performed with 50 layers in the vertical from sea surface to 25 hPa, with higher resolution near the bottom of the domain. Horizontal resolution was 0,125x0,125 transformed degrees (about 20kmx20km). Numerical simulations show that the polynya had significant effects on temperature, specific humidity, vertical velocity and horizontal wind speed throughout the boundary layer. The effects are found over and downwind the sea ice free area. The presence of polynya produced significant thermal modifications in atmosphere. Turbulent kinetic energy also responded to its presence and the low level wind speed changed over the open water area. References: Casini, G., Morelli, S. (2007) ‘Katabatic wind and Terra Nova Bay polynya: a study using two different versions of ETA model’, Geophysical Research Abstract, vol. 9, 02656.De Carolis G., Morelli, S., Parmiggiani, F., and Casini G. (2006) ‘Terra Nova Bay polynya: a study by satellite microwave observations and Eta model simulations’,Geophysical Research Abstract, vol. 8, 08433Mesinger F., Jovic D., Sin Chan Chou, Gomes J.L., Bustamante J.F. (2006) ‘Wind forecast around the andes using the sloping discretization of the Eta coordinate’, Proceedings of 8 ICSHMO, Foz do Iguacu, Brazil, 24-28 April 2006, INPE.Morelli S., Casini G., Parmiggiani F. (2007) ‘Wintertime katabatic event and polynya at Terra Nova Bay: a study by ETA simulations and AMSR-E images’, Extended Abstract of 2nd Antarctic Meteorological Observation, Modeling and Forecasting (AMOMF) Workshop, June 2007.Morelli S., Casini G. (2008) ‘Antarctic katabatic winds and their interaction with a coastal polynya in Terra Nova Bay, studied by ETA model simulations and satellite images’, Geophysical Research Abstract, vol. 10.Morelli S. (2008) ‘ETA Model simulation of winter katabatic events over the Terra Nova Bay area, Antarctica’. Third ICTP conference on "Current Efforts Toward Advancing the Skill of Regional Weather Prediction. Challenges and Outlook", 8-10 October 2008
Slope instability and erosional features of the Ligurian Margin
No full textThe recent conclusion of the Magic Project (Marine Geohazards along the Italian Coasts) (Chiocci & Ridente, 2011), the MALISAR Cruises (Migeon et. Al., 2011; Migeon et al., 2012) and the contribution of the data available at
the Universities of Genoa (IT) and Trieste (IT) allowed us to identify and study the large series of erosional and gravitative phenomena along the Ligurian continental margins. The dataset allowed us to relate the structural
evolution of the Ligurian Basin, the characteristics of the sedimentation, the erosive action of a dense canyon network and the gravitational phenomena (Corradi et al., 2002).
The Ligurian Sea is the northwestern portion of the Mediterranean Sea. It originated from the roto-translation of the Corsica-Sardinia Block and is connected to the Apennine orogenic dynamics (Fanucci & Morelli, 2000). The
complex geological evolution of the Liguran Sea brought to the division of this basin in different physiographic domains. The main one is the Valley of Genoa that separates the margin of the Alpine area from the Apennines one,
which developped in a portion of the newly formed chain. The evolution of the two margins, mainly controlled by extensional tectonics processes, was interrupted by compressional and/or transpressive reactivations, which gave
particular characteristics to the margins (Fanucci & Morelli, 2013; Sage et al., 2013; Sage et al., 2014).
The Alpine margin is characterized by high seismicity, high sedimention rate and steepness of the margin, determining massive and unstable sedimentary masses along the slope, which are carved by a dense network of
canyons.
It is in the western Liguria sector that these erosive features are extensively represented until the "Dorsal of Imperia", a structural element that runs parallel to the margin for about 50-60 kilometers. Its genesis can be attributed to
the effects of a compressive deformation and this structure isolated an intra-slope basin in which huge quantities of sediments were accumulated and drained by canyons and conveyed in the Valley of Genoa, through the
Canyon of Vado.
The continental margin between the City of Genoa and the Portofino Promontory is characterized by the two main canyons of the Ligurian Gulf: the Polcevera and the Bisagno canyons. These are in continuity with their
respective rivers and almost entirely eroded a thick Plio-Quaternary sequence.
The Apennine margin presents a less complex structure than the Alpine one (Fanucci & Morelli, 2006); however, large gravitative phenomena are present. The most important is the Portofino Landslide, located in front of the
corresponding promontory. It is mainly characterized by rotational slips and incipient detachment niches, stimulated by the erosion at the base by the Levante Canyon. This last, oriented along the Apennine tectonic lineations,
produces significant erosion, both on the head than along its way, which is almost parallel to the coast until its confluence in the Bisagno Canyon.
References
Chiocci F.L. & Ridente D. 2011. Regional-scale seafloor mapping and geohazard assessment. The experience from the Italian project MaGIC (Marine Geohazards along the Italian Coasts). Mar. Geophys. Res., 32 (1-2),
13-23.
Corradi N., Cuppari A., Fanucci F. & Morelli D. 2002. Gravitative instability of sedimentary masses on the Ligurian Sea margins. GeoActa, 1, 37-44.
Fanucci F.,& Morelli D. 2000. Caratteri e cronologia della deriva del Blocco Sardo-Corso. Atti Ass. It. Oceanol. Limnol., 13 (2), 167-181
Fanucci F.,& Morelli D. 2006. Assetto strutturale ed evoluzione polifasica del Margine appenninico tra Portofino e La Spezia. Rend. Soc. Geol. It., http://hdl.handle.net/11368/1693875
Fanucci F.,& Morelli D. 2013. Rapporti tra morfologia e tettonica sul margine continentale ligure. http://hdl.handle.net/11368/2768328
Migeon S., Cattaneo A., Hassoun V., Larroque C., Corradi N., Fanucci F., Dano A., Mercier de Lepinay B., Sage F. & Gorini C. 2011. Morphology, distribution and origin of recent submarine landslides of the Ligurian
Margin (North-western Mediterranean): some insights into geohazard assessment. Mar. Geophys. Res., 32 (1-2), 225-243.
Migeon S., Cattaneo A., Hassoun V., Dano A., Casedevant A. & Ruellan E. (2012). Failure Processes and Gravity-Flow Transformation Revealed by High-Resolution AUV Swath Bathymetry on the Nice Continental Slope
(Ligurian Sea). Advances in Natural and Technological Hazards Research, 31, 451-461.
Sage F., Beslier M.O., Gaullier V., Larroque L., Dessa J.X., Mercier de Lepinay B., Corradi N., Migeon S., Katz H., & Ruiz Constan A. 2013. Partitioning of deformation along a reactivated rifted margin:example of the northern
Ligurian margin. Geophys. Res. Abs. Vol. 15. http://hdl.handle.net/11567/692573.
Sage F., Beslier M.O., Dessa J.X., Schénini L., Watremez L., Mercier de Lépinay B., Gaullier V., Larroque C., Béthoux N., Corradi N., Bigot A., Migeon S., & Ruiz Constan A. 2014. Inversion of back-arc basins: example of the
LigurianBasin, Western Mediterranean. Geophys. Res. Abs. Vol. 16, EGU2014¬15668, http://hdl.handle.net/11567/692574
Combined observations of a Bora event in the Adriatic Sea by means of ETA model and SAR data
No full textThe Bora is a cold, strong, low level wind which blows from the northeast along the Adriatic coast (Ivančan-Picek and Tutiš, 1996, Lazić and Tošić, 1998, Morelli and Berni, 2002). Bora wind is known to have multiple surface wind jets linked to the orography of the Dinaric Alps and alters significantly the sea status (Cesini et al, 2004).
A recent version of the Eta model (Mesinger et al, 2012), which is a three-dimensional, primitive equation, grid-point model, was used to represent the low level wind field corresponding to the Bora event occurred at the beginning of February 2012. Numerical simulations, initialized by ECMWF data, were performed with different horizontal resolutions (approximately 20 km and 4 km) and domain extent. The numerical simulations describe the atmospheric conditions of the period and reveal the spatial structure of the wind, in good agreement with the understanding as well as the observational knowledge of the bora.
In addition, the wind speed and direction was estimated on the ASAR images. Wind directions were obtained by exploiting a novel technique based on the use of 2D continuous wavelets (Zecchetto and De Biasio, 2001, 2008). Then, the retrieved wind directions were used to estimate the wind speed from the ASAR NRCS by inverting the semi-empirical backscatter model CMOD-5 (Hersbach, 2005).
The ASAR observed morphology, wake patterns and, where present, dual-jet structure of the Bora wind were analysed for 2 and 5 February at the two different Eta resolution scales. Results of the comparisons between Eta prediction and ASAR data will be shown.
Cesini D., Morelli S., Parmiggiani F.: Analysis of an intense bora event in the Adriatic area, Natural Hazards and Earth System Sciences, 4, 323-337, 2004.
Hersbach H.: CMOD-5. An improved geophysical model function for ERS C-band scatterometry, ECMWF Technical Memorandum 395, Reading, England, pp. 1-50, 2003.
Ivančan-Picek, B., Tutiš, V.: A case study of a severe Adriatic bora on 28 December 1992, Tellus, 48A, 357-367,1996.
Lazić, L., Tošić, I.: A real data simulation of the Adriatic bora and the impact of mountain height on bora trajectories, Meteorol. Atmos. Phys., 66, 143-155, 1998.
Mesinger F., Chou S.C., Gomes J.L., Jovic D., Bastos P., Bustamante J.F., Lazic L., Lyra A.A., Morelli S., Ristic I., Veljovic K.: An upgraded version of the Eta model, Meteorol Atmos Phys, 116, 63–79, 2012, DOI 10.1007/s00703-012-0182-z.
Morelli, S., Berni, N.: On a bora event simulated by the Eta model, Meteorol. Atmos. Phys., 000, 1-12, 2002
An upgraded version of the Eta Model applied to Antarctic case studies
No full textUpgrades have been implemented over a number of years in an open source version of the Eta Model, posted at its CPTEC web site (http://etamodel.cptec.inpe.br/). They were summarized in Mesinger et al. (2011) and examined in detail in Mesinger et al.( 2012). In short: within dynamics, two major upgrades are the introduction of "sloping steps" and the use of the piecewise-linear vertical advection of dynamic variables. Several refinements on the calculation of exchange coefficients, conservation in the vertical diffusion, and diagnostic calculation of 10-m winds have been made. Vapor and hydrometeor loading in the hydrostatic equation were included. Within physics, efforts in refining the two Eta convection schemes received most attention. This recent version of the Eta Model has been applied to polynya events, accompanied by katabatic wind, at Terra Nova Bay (TNB), Antarctica. The TNB polynya is an area of coupling between the components of the sea ice-ocean-atmosphere system. Locally enhanced surface exchange processes are considered to have important consequences for the atmosphere (Morelli, 2011) and ocean processes, as well as for ice formation and the associated brine release. Adjustments of the Eta pre-processor have been made to allow for the distinctive polar conditions and for the use of ECMWF data as initial and boundary conditions. It is also being developed a thermodynamic model of sea ice interaction for a more realistic treatment of the sea ice-atmosphere. The numerical simulations have a horizontal resolution of about 8 Km. The results will be compared with observational data at the surface, with soundings and satellite images. The observations, used for the comparison, are available by Antarctic Meteorological Research Center, Space Science and Engineering Center, University of Wisconsin-Madison and the Programma Nazionale di Ricerche in Antartide (P.N.R.A.), Osservatorio Meteo-Climatologico.F Mesinger, Chou S C, Gomes J, Jovic D, Lazic L, Lyra A, Bustamante J, Bastos P, Morelli S, Ristic I (2011) An upgraded Version of the Eta Model. Geophysical Research Abstracts Vol. 13, EGU2011-3753-1.F Mesinger, Chou S C, Gomes J, Jovic D, Lazic L, Lyra A, Bustamante J, Bastos P, Morelli S, Ristic I (2012) An upgraded Version of the Eta Model.. Accepted for publication in Meteorol. Atmos Phys.S Morelli (2011) A modeling study of an Antarctica polynya event Meteorol Atmos Phys, 114:67-81 DOI 10.1007/s00703-011-0157-
Giovanni Morelli e Gustavo Frizzoni a Città di Castello
No full textIl contributo analizza la registrazione catalografica effettuata da Giovanni Morelli e Gustavo Frizzoni nel 1881 a Città di Castell
The Michael reaction of N-cinnamoylazoles with phenols. A simple synthesis of 4-arylchroman-2-ones and 1-arylbenzo[f]chroman-3-ones
No full text4-Arylchroman-2-ones 3 and 1-arylbenzo[f]chroman-3- ones 6 have been prepared in moderate to good yields by reaction of dihydric or trihydric phenols with p-substituted N-cinnamoylazoles in dichloromethane under reflux in the presence of DBU
Architettura razionale, 1973-2008 F Visconti, R Capozzi - 2008 - Clean Cited by 1 Related articles All 2 versions
No full textcitazione del libro Architettura italiana, anni 60 in Architettura razionale, 1973-2008
F Visconti, R Capozzi - 2008 - Clean
Cited by 1 Related articles All 2 version
Divinizzazioni femminili nella prima età imperiale. Analisi della documentazione numismatica
No full textConsiderando le implicazioni ideologiche derivanti dal processo dell’apoteosi e dall’istituzione del culto del princeps morto e divinizzato, emerge come l’istituto della consecratio manifesti, fin dalla prima età imperiale, una forte accezione politica, configurandosi essenzialmente come strumento di legittimazione personale, incentrata sulla creazione e sulla celebrazione di un rapporto di ascendenza e di filiazione divina. Analogamente, da un punto di vista del tutto complementare, il coinvolgimento diretto della componente femminile nell’evoluzione della pratica della divinizzazione imperiale – a partire dall’apoteosi di Drusilla (sorella di Caligola) e dalla consacrazione postuma di Livia (avia di Claudio) – assume una rilevanza oltremodo significativa in considerazione della funzione di legittimazione dinastica spesso attribuita alle donne della famiglia imperiale. Secondo questi presupposti, l’analisi delle emissioni postume coniate nel corso del I secolo d.C. per i personaggi femminili della domus imperiale risulta emblematica nel delineare la duplice accezione di legittimazione, personale e dinastica, sottesa al processo di divinizzazione dei membri della famiglia imperiale, e in particolare delle Auguste [A.L. Morelli].
A questo proposito, l’esame della documentazione numismatica per la diva Domitilla, qui identificata come Flavia Domitilla Minore – sorella di Domiziano ed avia dei suoi figli adottivi (Flavius) Domitianus e (Flavius) Vespasianus – consente di riconoscere le linee di definizione di un programma dinastico strettamente connesso al ruolo rivestito dalle Auguste in quanto garanti della successione al potere [E. Filippini]
A study of " Prestige" oil spill by the combined use of ENVISAT/ASAR, quikSCAT scatterometer and limited area model simulations
No full textThe "Prestige" tanker wreck of November 2002 was a major disaster affecting the environment of north-western coasts of Spain (Galicia). The consequences of "Prestige" accident have been studied by several research groups in the last two years. Hereafter we present a study of "Prestige" oil spill by means of a combined use of remote sensing tools and limited-area model simulations.Two Envisat/ASAR Wide Swath (WS) images over the area of the disaster, Nov. 17 and Dec. 3, were retrieved from ESA archive. ASAR WS processing consists of 2 main steps: 1. Ingestion and geo-location, performed by means of the commercial software package TeraScan (www.seaspace.com); and 2. Speckle filtering and segmentation, performed according to the algorithms described in [1] and [2].A major question in oil spill detection with SAR images is the discrimination between "real" oil slicks and "lookalikes". To operate this distinction we adopted an approach, based on local meteo-marine condition analysis, which implies:1. Wind and wave information retrieval from SAR image itself, performed according to the methods described in [3] and [4];2. QuikSCAT scatterometer wind data from the 2 daily passes of the satellite, as obtained from PODAAC/JPL;3. Simulations by means of the limited-area meteorological model Eta [5], a three-dimensional, primitive equation, grid-point model currently operational at the National Center for Environmental Prediction of the U.S. National Weather Service.We shall present and discuss the results of the analysis outlined above.[1] A. Baraldi and F. Parmiggiani, "A refined Gamma MAP SAR speckle filter with improved geometrical adaptivity", IEEE Trans. Geosci. Remote Sensing, vol. 33, No. 5, (1995), 1245-1257.[2] A. Baraldi, P. Blonda, F. Parmiggiani and G. Satalino, "Contextual clustering for image segmeation", Optical Engineering, vol. 39 (2000), no. 4, pp. 1-17[3] P. Wadhams, F. Parmiggiani and G. De Carolis, "The use of SAR to measure ocean wave dispersion by frazil-pancake ice fields", J. Phys. Oceanography, Vol. 32 (2002), no. 6, 1721-1746.[4] Giacomo De Carolis, Flavio Parmiggiani and Elena Arabini, "Observations of wind and ocean wave fields using ERS Synthetic Aperture Radar imagery", Int. J. Remote Sensing, Vol. 25, No. 7-8 (2004) 1283 - 1290.[5] D. Cesini, S. Morelli, F. Parmiggiani, "Analysis of an intense bora event in the Adriatic area", Natural Hazards and Earth System Sciences, (2004) vol. 4, Issue 2: 323 - 337
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