#Valentina studio vs datum free full#

More generally, the MOSE system is a global engineering example for coastal protection against storm surges in a frame of overall mean sea level rise.

#Valentina studio vs datum free full#

Once in full operational mode, the MOSE system might substantially affect the lagoon hydrodynamics and, consequently, sediment transport and sediment balance 25– 27. To protect the city from floods (‘high water events’), a complex array of large mobile barriers is under construction (MOSE system) through major modifications of the three lagoon inlets. Relative sea level rise will likely increase the frequency of flooding events in Venice 22– 24. In the last century, the lagoon morphology and ecological properties dramatically changed with a decrease of the salt marsh areas by more than 50% (shrinking from 68 km 2 in 1927 to 32 km 2 in 2002) and a net sediment flux modification 18– 21. Despite their low, and typically highly costly resolution (always >10 m), the resulting maps allowed a first recognition and semi-quantitative estimate of the erosional trends affecting the wetlands and of the deepening of the central lagoon 18.

Previous mapping of the whole Venice Lagoon were carried out in 1927, 19. The Venice Lagoon is the largest lagoon in the Mediterranean (550 km 2 and with an average depth of about 1.5 m) and is one of the UNESCO World Cultural and Natural Heritage sites, including the historical city of Venice. The dataset presented in this paper contains high-resolution data collected in the channel network of the Venice Lagoon by means of a high-resolution, multi-frequency MBES ( Fig. Only the recent technological developments are enabling multibeam systems to achieve very high performances reaching resolutions up to 0.05 m and operating up to 1 m depths 8, 15– 17. Acoustic devices, including MBES, have had restricted use in depths of 2–5 metres, mostly due to side-lobe effect 14, bottom reverberation or multiple reflections that were difficult to circumvent. Optical imaging of the bottom is very limited in turbid areas like these. The complex three dimensional morphology of tidal channels is still poorly imaged because shallow transitional environments are difficult to map in a comprehensive way. The relatively few morphological observations on tidal channels rely mainly on limited-resolution 2-D topographic surveys of channel profiles and cross-sections like those in the Tijuana estuary 9, and along the Schelt estuary in Belgium 10, or on aerial or satellite images as for example in New Jersey 11, and in Venice Lagoon 12, 13. Therefore, tidal networks and coastal transitional environments undergo fast morphological changes under natural and anthropogenic pressures, which have lead to increased flooding and habitat losses (e.g., shrinking salt marshes) that are likely to further increase due to climate change 5– 8.ĭespite being so relevant for the functioning of coastal transitional systems, tidal channels are still less studied than their river counterparts. These environments often represent highly urbanized settings with half of the world’s population and 13 of the largest mega-cities located close to the coast.

Tidal networks are observed worldwide, with the best-known examples including the inlets of the East Coast of the United States, the Wadden Sea and the Lagoon of Venice.

The hydrodynamics and related sediment, nutrient and biota exchange of these systems with the open sea is governed by their tidal networks, intricate patterns of bifurcating tidal channels dissecting tidal flats and salt marshes. These data are of potential broad interest not only to geomorphologists, oceanographers and ecologists studying the morphology, hydrodynamics, sediment transport and benthic habitats of tidal environments, but also to coastal engineers and stakeholders for cost-effective monitoring and sustainable management of this peculiar shallow coastal system.Ĭoastal transitional systems are amongst the most productive and valuable environments on Earth 1– 4. The DTMs and the current fields help define how morphological and benthic properties of tidal channels are affected by the action of currents. The dataset comprises also the backscatter (BS) data, which reflect the acoustic properties of the seafloor, and the tidal current fields simulated by means of a high-resolution three-dimensional unstructured hydrodynamic model. Here, we release a dataset composed of Digital Terrain Models (DTMs) extracted from a total of 2,500 linear kilometres of high-resolution multibeam echosounder (MBES) data collected in 2013 covering the entire network of tidal channels and inlets of the Venice Lagoon, Italy. Tidal channels are crucial for the functioning of wetlands, though their morphological properties, which are relevant for seafloor habitats and flow, have been understudied so far.