Wind-induced salt-wedge intrusion in the Tiber river mouth (Rome–Central Italy)

Manca, Fabio; Capelli, Giuseppe; Vigna, Francesco La; Mazza, Roberto; Pascarella, Annalisa

doi:10.1007/s12665-013-3024-5

Cited by 18 publications

(18 citation statements)

References 33 publications

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“…Sediments show generally low values of LOI and Ti, but high values of MS and Sr. The EC values are usually low but show opposing trends for basal deposits due to saltwater intrusions from the seaside (Manca et al, 2014;Mastrorillo et al, 2016). The foraminiferal content of deposits from high-energy environments frequently decreases with increasing grain size and is mostly restricted to few large, abraded individuals, clearly reflecting assemblages disturbed by strong flow dynamics.…”

Section: Abundancementioning

confidence: 99%

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River channel evolution and tsunami impacts recorded in local sedimentary archives – the ‘Fiume Morto’ at Ostia Antica (Tiber River, Italy)

et al. 2019

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Ostia, the ancient port of Rome at the mouth of the river Tiber (Italy), flourished until the 2nd Century ad, although massive siltation had already caused the abandonment of its lagoonal harbour in the 1st Century bc. In search of an alternative harbour site, geomorphological and geoarchaeological research was carried out in the ‘Fiume Morto’, an abandoned Tiber meander to the immediate north of the town. To reconstruct its complex development and evaluate the suitability of the river channel as a fluvial harbour, a transect perpendicular to the former river channel's flow axis was systematically explored by a new methodological approach combining electrical resistivity tomography, direct push‐electrical conductivity sensing and vibracores. Together with microfossil, mineralogical and geochemical analyses of sediment samples and 50 radiocarbon dates, in‐depth stratigraphic data support a detailed reconstruction of different Tiber channel generations. Results reveal a meander development closely related to distinct ‘cut and fill’ dynamics. Inactive river channels were repeatedly filled with lagoonal sediments, abruptly followed by phases of intense incision. Yet, the overall Fiume Morto channel structure remained stable and almost in situ over centuries, showing nearly no lateral changes since the southward shift of the Tiber River mouth in the first millennium bc. In the 1st Century bc, channel conditions favoured navigation and transportation of goods with large ships. Open‐water conditions, suitable for anchoring and landing activities, dominate from the 1st Century ad until 1557 ad, when the Fiume Morto meander was finally cut off and silted up within a short time. Within the fluvial deposits, sediments most likely related to tsunami inundations are preserved. These events occurred sometime before the 2nd Century bc, in the early 1st Century ad and in the 17th Century ad or later. Results are consistent with traces of tsunami influence found in Ostia's western lagoonal harbour.

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Section: Abundancementioning

confidence: 99%

“…are at least partly bound to dry sediments lying above the groundwater table (Mastrorillo et al, 2016). Extremely increased EC values of coarse-grained basal units (>200 mS m À1 ) reflect the intrusion of saline groundwater from the seaside (Manca et al, 2014;Wunderlich et al, 2018b).…”

Section: Direct Push Electrical Conductivity Measurementsmentioning

confidence: 99%

River channel evolution and tsunami impacts recorded in local sedimentary archives – the ‘Fiume Morto’ at Ostia Antica (Tiber River, Italy)

et al. 2019

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“…The global use of groundwater was estimated to be 750-800 km 3 /a [10,11]. The combination of climate change and indiscriminate groundwater development has caused a general decline in groundwater levels, resulting in the depletion of groundwater, land subsidence, and saltwater intrusion in deltaic areas [12]. Lower groundwater levels are a threat to the environment and hinder economic development.…”

Section: Introductionmentioning

confidence: 99%

Identifying Major Factors Affecting Groundwater Change in the North China Plain with Grey Relational Analysis

Xue

Zhang

2014

Water

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Abstract:The North China Plain (NCP) is facing a water crisis under the dual impact of natural and anthropogenic factors. Groundwater levels have declined continuously since 1960, causing a series of environmental problems that have restricted sustainable development in the region. In the present study, we first utilized a previously developed 3D groundwater model to determine changes in groundwater level in the region over the past 50 years . We then applied grey relational analysis (GRA) to identify and ordinate major factors that have contributed to these changes. The results show an overall decreasing trend in groundwater levels in this region over the past 50 years and an increase in the water table depth at a rate of approximately 0.36 m/a. Groundwater exploitation showed the most significant correlation with the groundwater table decline, when compared with other factors including precipitation and river leakage. Therefore, human activities should be considered the primary force driving the groundwater level down. The results of this study have implications for developing criteria that consider changes in both climate and socio-economics. Furthermore, since the NCP is one of the most water-scarce OPEN ACCESSWater 2014, 6 1582 and densely populated regions in the world, the analytical approach used in and the insights gained from this study are of international interest.

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“…Salt water intrusion at estuarine region is being affected by various meteorological parameters, viz. precipitation and wind intensity (Manca et al 2014). These studies also broaden the knowledge base of scientific community about the importance of studying tidal affinity with groundwater-surface water interaction.…”

Section: Introductionmentioning

confidence: 84%

Characterization and evaluation of hydrological processes responsible for spatiotemporal variation of surface water quality at Narmada estuarine region in Gujarat, India

Singh¹,

Kumar²,

Basil³

et al. 2014

Appl Water Sci

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This study is an effort to trace the spatiotemporal variation in water at Narmada estuarine region through solute concentration. A total of 72 water samples were collected and analyzed from three sampling points along with in situ measurement of tidal height at monthly basis for 2 years. Result shows that spatiotemporal variation of water quality occurs because of the following main mechanisms, i.e., carbonate weathering, dilution and seawater-freshwater mixing. Firstly, points situated toward inland showing the simple dilution effect on receiving high amount of monsoonal precipitation. Secondly, tidal fluctuation pattern has a strong influence on the water quality taken from the point located in near proximity to the coast. Finally, it can be concluded that water quality shows a different response, in accordance with the different tidal phase and the distance from the sea.

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Wind-induced salt-wedge intrusion in the Tiber river mouth (Rome–Central Italy)

Cited by 18 publications

References 33 publications

River channel evolution and tsunami impacts recorded in local sedimentary archives – the ‘Fiume Morto’ at Ostia Antica (Tiber River, Italy)

River channel evolution and tsunami impacts recorded in local sedimentary archives – the ‘Fiume Morto’ at Ostia Antica (Tiber River, Italy)

Identifying Major Factors Affecting Groundwater Change in the North China Plain with Grey Relational Analysis

Characterization and evaluation of hydrological processes responsible for spatiotemporal variation of surface water quality at Narmada estuarine region in Gujarat, India

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