An ultra high-resolution multibeam survey of the lowermost reach of the Tiber River (Rome, Italy) was carried out in February 2011 on a total length of 56 km from the northernmost part of Rome city to the river mouth. The morpho-bathymetric data reveal that the main morphological features of the river bed are widespread dune fields, covering about 45% of the surveyed area. Three main types of bedform were identified, with wavelengths ranging from a few metres up to hundreds of metres. The seismic profiles show a transparent layer(s) of 1-2 m, corresponding to a traction carpet of coarse-grained sediment, where the bedforms migrate. By integrating bathymetric data with high-resolution seismic profiling and sampling, one can better define the genesis of these bedforms and provide insights into the present-day sedimentary processes acting on the river bed.
Bedforms on the Lowermost Reach of the Tiber River (Rome, Italy): Preliminary Results from Integrated Geophysical Surveys and Samplings / Bosman, Alessandro; Orlando, Luciana. - STAMPA. - 1(2016), pp. 95-98. [10.1007/978-3-319-33940-5].
Bedforms on the Lowermost Reach of the Tiber River (Rome, Italy): Preliminary Results from Integrated Geophysical Surveys and Samplings
BOSMAN, Alessandro
;ORLANDO, Luciana
2016
Abstract
An ultra high-resolution multibeam survey of the lowermost reach of the Tiber River (Rome, Italy) was carried out in February 2011 on a total length of 56 km from the northernmost part of Rome city to the river mouth. The morpho-bathymetric data reveal that the main morphological features of the river bed are widespread dune fields, covering about 45% of the surveyed area. Three main types of bedform were identified, with wavelengths ranging from a few metres up to hundreds of metres. The seismic profiles show a transparent layer(s) of 1-2 m, corresponding to a traction carpet of coarse-grained sediment, where the bedforms migrate. By integrating bathymetric data with high-resolution seismic profiling and sampling, one can better define the genesis of these bedforms and provide insights into the present-day sedimentary processes acting on the river bed.File | Dimensione | Formato | |
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