1,720,987 research outputs found
Geomorphological Evolution of the Plain between the Livenza and Piave Rivers in the 16th and 17th Centuries Inferred by Historical Maps Analysis (Mainland of Venice, Northeastern Italy)
The ancient hydrographical network and geomorphological framework of the fluvial and coastal plain encompassed between the Livenza and Piave Rivers in the mainland of Venice (Northeastern Italy) were reconstructed, based on historical maps, georeferenced, and overlaid on available geomorphological maps and aerial photographs. A selection of 59 maps was accurately analyzed (32 from the sixteenth century, 31 from the seventeenth century, and 6 from the eighteenth century). They were selected by author, commitment, date, and scale, from among more than 1000 maps edited by Savi e Esecutori alle Acque (the ‘hydrographical’ service during the Republic of Venice) in the 16th and seventeenth century. The most representatives (7 from the sixteenth century and 6 from the seventeenth century) were georeferenced and redrawn. Finally, four 1:50.000 maps were created, picturing the ancient morphology and hydrographical network in the years 1550, 1600, 1650, and 1700, covering an area of about 130 square kilometers. Geographical information was compared with historical documents and geological, geomorphological, and geochronological data. Further comparison of geodetic maps from the eighteenth to the twenty-first century produced new maps with important information on the paleogeographical and environmental framework across two centuries, and particularly on the artificial diversion projects performed by the Venetian Republic, their effectiveness, and the geomorphological changes both related to human intervention and recent climatic changes
Geomorfologia, cartografia storica e archeologia come strumenti integrati per l’analisi evolutiva delle aree di pianura: il basso Piave nell'Olocene.
The Artificial Fluvial Diversions in the Mainland of the Lagoon of Venice during the XVI and XVII Centuries inferred by historical cartography analysis
During the 15th c., the Lagoon of Venice was part of a large coastal belt of lagoons and swamps, up to 20 km wide, bordering the western
side of the northern Adriatic coast. The area of interest, including the whole Lagoon of Venice, extends from Adige River to the
Livenza River to the North. Lagoons’ extent was regulated by the presence of river deltas and lagoon inlets, being controlled in their
evolution by river sedimentary loads and tidal dynamics. The lagoon inlets were menaced by progressive decreasing of water depth due
to sand deposition caused by the near fluvial deltas, forming outside the lagoon (mostly Piave and Adige rivers); for that reason, the
Repubblic of Venice decided to undertake an epic struggle against rivers, diverting them outside the Lagoon or turning them far away;
the projects were only partially carried out, mostly during 16th and 17th c., changing the morphology of the alluvial plain and the
coastal margin. The ancient hydrographical and geomorphological framework was reconstructed for the whole area (ca. than 2000 km2).
More than 7000 maps were observed; 356 of them were analysed, while the most representatives were georeferenced and their main
feature were redrawn. The reconstruction made use of the full cartographic data set, comparing information with historical documents
and geological, geomorphological and geo-chronological data. Two case studies are presented (Piave and Brenta diversions) to illustrate
actions and consequences on the geomorphology of the plain. The outcome maps give precious information on the diversion
project, their effectiveness, the geomorphological changes both related to human interventions and recent climatic changes
Evoluzione geomorfologica tra il XVI e il XVII secolo della pianura tra i fiumi Piave e Livenza attraverso l’analisi della cartografia storica.
Geographic databases have been compiled through a multidisciplinary approach that includes
archeology, geology, geomorphology and historical maps. They contain descriptions of
archaeological sites, contexts and geomorphological evolution of the ancient geographical area of
the lagoon and the city of Venice. The derived maps are diachronic and allows the representation of
the human and natural evolutionary phases from the first settlements to the present day. The data set
derives from institutional activities undertaken for more than a decade by Nausicaa wih more than a
thousand of interventions in the lagoon, about eight hundred archaeological sites identified by E.
Canal during his decades of research, numerous surveys and mapping conducted at provincial level
both by local authorities and the University of Padua and through digital processing made by the
Consorzio Venezia Nuova
Carta della fotointerpretazione e dei siti archeologici della provincia di Venezia tra i fiumi Livenza e Tagliamento
Carta ottenuta dall'interpretazione di foto aeree zenitali e immagini satellitari multispettrali, applicando alla rappresentazione una legenda elaborata appositamente. Nella carta sono riportate sia le tracce lasciate dai processi naturali, che quelle legate all'antico popolamento umano
Banche dati geoarcheologiche della laguna e della città di Venezia
Attraverso un approccio intersciplinare che comprende archeologia, antropologia, geologia, geomorfologia, palinologia e archeozoologia e la cartografia storica sono state compilate le banche dati geografiche che contengono la descrizione delle emergenze archeologiche, dei contesti geomorfologici e dell’evoluzione geografica antica del comprensorio lagunare e della città di Venezia. La cartografia derivata, di tipo diacronico, consente la rappresentazione delle fasi evolutive antropiche e naturali dall’età dei primi insediamenti fino ai giorni nostri. I data set derivano dalle attività istituzionali durate circa vent’ anni da parte dell’Ufficio Nausicaa (Soprintendenza per i Beni archeologici del Veneto) con oltre un migliaio di interventi in laguna, da circa ottocento siti archeologici identificati da E. Canal durante la sua pluridecennale attività di ricerca, dalle numerose ricerche di tipo cartografico condotte in ambito provinciale sia dagli Enti Locali che dall’Università di Padova e attraverso l’informatizzazione di tutti dati operata dal Consorzio Venezia Nuova
The fortified Venice: the line of fortifications around Venice and its relation with the geomorphology of its lagoon and the mainland
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