101,491 research outputs found
Incontrarsi al limite : Ibridazioni mediterranee nell’Italia preromana tra Tirreno e Adriatico
No full textLa cattedra di Archeologia Classica dell’Università di Ferrara continua a indagare il tema dei confini: un filone di ricerca estremamente promettente per la comprensione dei processi di definizione degli spazi socio-economici e culturali in epoca
antica, ma anche in una prospettiva interpretativa che vede le aree liminali come sistemi aperti, di passaggio e quindi di contatto tra realtà diverse. Da qui l’idea del titolo Incontrarsi al limite per indagare contatti avvenuti in luoghi essenzialmente fluidi che
portano allo sviluppo di relazioni nuove e inedite e quindi di ibridazioni, temi questi di cui ci stiamo occupando da diversi anni. Allo stesso tempo, desideravamo riprendere la riflessione sullo sviluppo della cultura corinzia nel Mediterraneo occidentale, facendo seguito in particolar modo alla giornata di studi “L’Isthme de Corinthe: cités, économies, espaces sacrés” organizzata da Cecilia D’Ercole e Adrian Robu a Parigi nel 2015. Questa lettura critica dello spazio di espansione e di commercio della città istmica ci è infatti sembrata da subito la chiave interpretativa giusta per occuparci di un contesto meno definito sotto l’aspetto coloniale, soprattutto in età arcaica e classica, quale l’Adriatico, che rappresenta di per sé un’area di frontiera rispetto al mondo greco
G. Curcio. Q. Orazio Flacco studiato in Italia dal secolo XIII al XVIII (Biblioteca di filologia classica diretta da C. Pascal, t. VII)
No full textLafaye Georges. G. Curcio. Q. Orazio Flacco studiato in Italia dal secolo XIII al XVIII (Biblioteca di filologia classica diretta da C. Pascal, t. VII). In: Journal des savants. 11ᵉ année, Décembre 1913. pp. 564-565
Preliminary analysis of M1 of Late Pleistocene and Recent populations of Terricola savii from Italy (Arvicolidae, Rodentia)
No full textThe main object of this research is the study of the variability degree of the first lower molar in Late Pleistocene and living populations of Terricola savii in Italy (whose conspecificity has been proved by genetic analyses) and its comparison with that of fossil populations (assigned to T. savii on a morphological basis) in order to find a way to attribute isolated fossil remains to specific systematic groups. On this basis, we attempted to establish, through different analyses and direct observations on the occlusal dental surface morphology, the relationships that exists between fossil and living populations, and to verify the existence of a temporal and/or geographic cline
Analisi della variabilità di M1 in popolazioni fossili e attuali di Terricola savii (de Sélys-Longchamps 1838) (Arvicolidae, Rodentia)
No full textLetter, [Author unclear] to Paulina T. Merritt
No full textHandwritten letter to Paulina Merritt from an unknown author, October 1, 1876.
A Late Pleistocene vertebrate assemblage from a fluvial terrace of the Fiora River (Northern Latium, Central Italy)
No full textA fauna of fossil vertebrates collected in an alluvial deposit in the Fiora River, in the Vulsini Volcanic District (locality Ponte San Pietro, Northern Latium, Central Italy) is described. Eighteen species have been collected: four amphibians (Triturus cf. T. vulgaris, Bufo bufo, Bufo viridis and Rana sp.), three reptiles (Testudinata indet., Lacerta gr. L. viridis and Hierophis viridiflavus) and eleven species of mammals (Talpa sp., Crocidura leucodon, Felis silvestris, Capreolus capreolus, ?Dama sp., Cricetus sp., Arvicola sp., Clethrionomys glareolus, Apodemus sylvaticus, Glis glis and Muscardinus avellanarius). The fossil assemblage lived, very probably, in a riparian forested area as indicated by the predominance of C. Glareolus and A. sylvaticus and the presence of glirids, wild cat, roe deer and many amphibians. The evolutionary stage of Arvicola combined to the presence of Cricetus point to an attribution to MIS4 or MIS5b (Late Pleistocene). This biochronological datum fit very well with the radiometric data
A late Middle Pleistocene vertebrate assemblage from a fluvial terrace of Fiora river (Northern Latium, Central Italy)
No full text3D numerical modeling of the Pisa coastal plain (North-Western Tuscany)
No full textSince prehistoric times, the Pisa coastal plain, lowest portion of the Arno and Serchio Rivers basins, was the preferred site for human settlements. It was therefore involved in important drainage and hydraulic reclamation works. They began before Roman Empire and produced an almost entirely artificial hydrographic network, including significant modifications to large part of the main river courses. In the last two centuries, population quick rise, urban centers, tourist and industrial activities growth raised both water and dry land demand. Irrational water pumping near the coast produced severe seawater intrusion in the coastal aquifers.
3D finite differences numerical simulations (Visual Modflow 4.2) were applied to the phreatic aquifer of the Pisa coastal plain (Wide Area Model - WAM), with dedicated zooms on the densely inhabited areas of Marina di Pisa and Tirrenia. In particular, the WAM has his boundary at the Arno River to the North, the Navicelli Canal to the East, the Scolmatore Canal to the South and the seashore to the West. The WAM output was used as boundary condition to implement the zoomed models of Marina di Pisa and Tirrenia (Visual Modflow Seawat code).
The work required a first step of acquisition, systematization and processing of bibliographic and field data, in order to build the geological and hydrogeological conceptual model; the conceptual model was then translated into numerical input.
The implementation of the numerical model based on the hydrostratigraphic structure, rainfall pattern, thermometric and piezometric data collected from October 2007 to December 2009 (calibration stage), as well as on the unconfined and first confined aquifer salinity data logs, and on the main hydraulic parameters (hydraulic conductivity, porosity, storage coefficient) of the studied aquifer. The unconfined aquifer, 10-15 m thick, is hosted in sandy coastal dunes, characterized by medium-high hydraulic conductivity (K ≈ 10-2 cm/s) and overlies an aquiclude (K ≈ 10-7 cm/s) generally constituted by clay and silty clay.
Besides numerical modeling the correlation between rainfall and piezometric level data was analyzed in order to identify the phreatic aquifer recharge time. For almost all the monitored piezometers, a high correlation coefficient (0.75<R2<0.85) between rainfall and water table data was detected for a span of 75 days. The identified correlation helped the model simulations interpretation.
The WAM was implemented and calibrated in order to analyze the water flow system, while the zoomed models of Tirrenia and Marina di Pisa were carried out and calibrated to calculate the extent and saline content of the seawater intrusion. The results reached a significant statistical correspondence to observed data sets. Regarding Marina di Pisa and Tirrenia models, simulation was also performed to forecast possible future scenarios relating the water table trends and seawater intrusion.
Both models show a modest degree of seawater intrusion near the shoreline. In particular, in the Marina di Pisa area, close to the dune system, the seawater intrusion is just a thin level below a thick freshwater body. On the other hand, in the Tirrenia area the salt water completely saturated the unconfined aquifer. In the internal portion of the study area, between the dune system and the Navicelli Canal, in ancient times characterized by lagoons, marshes and swamps, the salt content raises, from high to very high for the whole thickness of the aquifer.
In conclusion, the simulation models show the important role of the natural dune system as freshwater pseudo-hydrostatic barrier, effectively contrasting the seawater intrusion in the unconfined costal aquifer. Moreover, simulations identified the main cause of the seawater intrusion in massive pump driven dewatering by the artificial drainage network, which causes a significant lowering of the water table, from 1.70 to 2.50 below the sea level
Handwritten biographical information on Paulina T. McClung Merritt
No full textA handwritten biography of Paulina T. McClung Merritt by an unknown author, 1892.
- …
