Near-shore sediment dynamics computation under the combined effects of waves and currents

Carmo, José Simão Antunes do; Seabra-Santos, Fernando J.

doi:10.1016/s0965-9978(01)00045-x

Cited by 18 publications

(1 citation statement)

References 14 publications

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“…In a rather different study related to sediment dynamics, the Tagus estuary mouth was used as a "real-world" application to test a non-cohesive sediment transport model and bed-level change in near-shore regions [59]. The aim of this study was to assess the effect of waves and currents at the Bugio lighthouse island (located near the mouth of the estuary), highlighting possible changes of erosion/accretion patterns in the region.…”

Section: The 2000smentioning

confidence: 99%

The Tagus Estuary as a Numerical Modeling Test Bed: A Review

et al. 2019

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The Tagus Estuary is the largest estuarine system in the Iberian Peninsula. Located in a heavily populated metropolitan area (Lisbon), the estuary-coastal continuum is subject to significant natural variability (e.g., tidal variations, winds, river inflow, etc.) and human pressures (e.g., sewage outflow, infrastructures, coastal reclamation, dredging, etc.). Since the 1980s, the estuary has been a natural laboratory for a great number of multidisciplinary studies, but also a numerical laboratory to test models and to develop new ideas and numerical methodologies. Hydrodynamic and biogeochemical models have been used ever since to ascertain the main spatial and temporal features of the Tagus system, connecting its dynamic to its biogeochemical cycles, providing numerical tools used to increase knowledge and to manage the estuary and nearby coastal waters. The main objective of this paper is to present a synopsis of the scientific output related to numerical studies in the Tagus system, by reviewing more than fifty papers published over the past four decades. Our work provides a historical background and description of the numerical models implemented to address estuarine hydrodynamics, nutrient uptake, primary production, light availability, seasonal and annual cycles and the link between physical, biological and chemical estuarine oceanography.

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Section: The 2000smentioning

confidence: 99%

The Tagus Estuary as a Numerical Modeling Test Bed: A Review

et al. 2019

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Sediment variability and transport in the littoral area of the abandoned Yellow River Delta, northern Jiangsu

et al. 2014

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The delta evolution and erosion process of the abandoned Yellow River Delta (AYRD) have been extensively studied. However, the variation of sediment at a large littoral scale along the north coast of Jiangsu is less understood. In this study, the data of surface sediment samples obtained in the littoral area of the Yellow River Delta in 2006 and 2012 is used to study the sediment variability and sediment transport trends by using the geostatistics analysis tool and the grain size trend analysis model. In order to ensure the applicability of the model, the geostatistics method is used to determine the characteristic distance (D c) with the average range value (Ao) of grain size parameter. Filtering method (removing data that not at a sampling station) is used to improve accuracy of data selection. The results show that sedimentary spatial correlation in Lianyun Port area and southern part of the abandoned Yellow River Delta (AS) is better than that in the northern part of the abandoned Yellow River Delta (AN). Sediment in the area is found to be anisotropy at the northeast-southeast direction. The grain size trend analysis reveals that the sediment trend is towards bayhead and southerly in the Haizhou Bay, southeasterly along the shoreline in the south Lianyun Port, northwesterly in AN and easterly-southeasterly in AS respectively. The investigation of possible relationships between D c , Ao, sediment transport and delta evolution shows a close link between D c and Ao of one sediment combination. It is also found that sediment transport trends could reasonably represent the delta evolution to a certain degree.

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