Sediment transport time series in the Tiber River

Iadanza, Carla; Napolitano, Francesco

doi:10.1016/j.pce.2006.05.005

Cited by 58 publications

(41 citation statements)

References 18 publications

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“…Before 1950, the Tiber River was still crossed by a few dams, and the suspended matter represented 7.18 x 10 6 t/yr. Now, the suspended matter is only about 1.41 x 10 6 t/yr (Iadanza & Napolitano, 2006). The bedload discharge has been measured only once in 1990, with respect to only one medium flood event deposit (Bersani & Amici, 1993).…”

Section: Geological and Archaeological Settingmentioning

confidence: 99%

Long‐Term Interactions between the Roman City of Ostia and Its Paleomeander, Tiber Delta, Italy

et al. 2016

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This study examines the long term interactions between the well-known Roman city of Ostia and a river meander. Located at the mouth of the Tiber River, Ostia was a major harbor city that connected Rome to the Mediterranean Sea. Based on aerial photography and boreholes analysis, the paleodynamics of the Fiume Morto's paleomeander are understood to be linked to the urban evolution of the city of Ostia. Four periods of evolution have been identified as a result of this interdisciplinary work: (1) the foundation of Ostia's urban center, in the 4 th -3 rd century BC, occurred when the meander already existed;(2) between the 4 th century BC and the 3 rd century AD, human/environmental interactions contributed to the compound growing of the meander which possibly eroded an important Roman road linking Ostia to Rome; (3) from the Imperial period until the meander was cut off in AD 1557-1562, the constricted meander channel at the apex led to the stability of the downstream river channel; (4) the cut off of the paleomeander was completed in 1562, leading to the filling of the paleochannel. These successive phases of channel evolution mark changing fluvial risks from the Roman period to today.

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Section: Geological and Archaeological Settingmentioning

confidence: 99%

Long‐Term Interactions between the Roman City of Ostia and Its Paleomeander, Tiber Delta, Italy

et al. 2016

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“…The maximum historic discharge exceeds 3000 m 3 /s and the minimum discharge 60 m 3 /s. The mean suspended load was 7.2x10 6 t/a at the Ripetta station (1934)(1935)(1936)(1937)(1938)(1939)(1940)(1941)(1942)(1943)(1944)(1945)(1946)(1947)(1948)(1949)(1950), before the impacts of large dams on sediment fluxes occurred (Iadanza and Napolitani, 2006).…”

Section: Geology and Geographymentioning

confidence: 99%

The Canale di Comunicazione Traverso in Portus: the Roman sea harbour under river influence (Tiber delta, Italy)

Salomon¹,

Delile²,

Goiran³

et al. 2012

geomorphologie

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“…Numerous regression relationships (i.e., sediment rating curves) have therefore been developed in order to predict suspended sediment concentration during flood events (Iadanza and Napolitano, 2006;Picouet et al, and nitrogen (Maillard and Pinheiro Santos, 2008). There are indications that turbidity is positively correlated with temperature during spring/summer (Vernile et al, 2009), because of algal growth, and negatively correlated during fall/winter due to the decay of plants, leaves etc.…”

Section: Introductionmentioning

confidence: 99%

Variation in turbidity with precipitation and flow in a regulated river system – river Göta Älv, SW Sweden

Göransson

Larson

Bendz

2013

Hydrol. Earth Syst. Sci.

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Abstract. The turbidity variation in time and space is investigated in the downstream stretch of the river GötaÄlv in Sweden. The river is heavily regulated and carries the discharge from the largest fresh water lake in Sweden, Lake Vänern, to the outflow point in Göteborg Harbour on the Swedish west coast. The river is an important waterway and serves as a fresh-water supply for 700 000 users. Turbidity is utilised as a water quality indicator to ensure sufficient quality of the intake water to the treatment plant. The overall objective of the study was to investigate the influence of rainfall, surface runoff, and river water flow on the temporal and spatial variability of the turbidity in the regulated river system by employing statistical analysis of an extensive data set. A six year long time series of daily mean values on precipitation, discharge, and turbidity from six stations along the river were examined primarily through linear correlation and regression analysis, combined with nonparametric tests and analysis of variance. The analyses were performed on annual, monthly, and daily bases, establishing temporal patterns and dependences, including; seasonal changes, impacts from extreme events, influences from tributaries, and the spatial variation along the river. The results showed that there is no simple relationship between discharge, precipitation, and turbidity, mainly due to the complexity of the runoff process, the regulation of the river, and the effects of Lake Vänern and its large catchment area. For the river GötaÄlv, significant, positive correlations between turbidity, discharge, and precipitation could only be found during periods with high flow combined with heavy rainfall. Local precipitation does not seem to have any significant impact on the discharge in the main river, which is primarily governed by precipitation at catchment scale. The discharge from Lake Vänern determines the base level for the turbidity in the river, whereas local surface runoff and tributary discharge induced by rainfall govern the temporal variability in turbidity. Autocorrelation analysis indicates a temporal persistence in turbidity of about 10 days. The results also show that erosion along the main river, from the river bed and banks, is not a dominant contributor to the suspended sediment transport in the river under normal conditions. Further studies on the correlation between turbidity and suspended sediment transport and its relation to erosion processes are suggested.

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Sediment transport time series in the Tiber River

Cited by 58 publications

References 18 publications

Long‐Term Interactions between the Roman City of Ostia and Its Paleomeander, Tiber Delta, Italy

Long‐Term Interactions between the Roman City of Ostia and Its Paleomeander, Tiber Delta, Italy

The Canale di Comunicazione Traverso in Portus: the Roman sea harbour under river influence (Tiber delta, Italy)

Variation in turbidity with precipitation and flow in a regulated river system – river Göta Älv, SW Sweden

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