Modeling Multi-Fraction Coastal Aeolian Sediment Transport With Horizontal and Vertical Grain-Size Variability

Grain size affects the rates of aeolian sediment transport on beaches. Sediment in coastal environments typically consists of multiple grain-size fractions and exhibits spatiotemporal variations. Still, conceptual and numerical aeolian transport models are simplified and often only include a single fraction that is constant over the model...

Detection of aeolian sand strips and their characteristics using terrestrial laser scanning: The dependency between aeolian sand strip development and the environmental conditions occurring at the Noordwijk beach

Sea level rise causes more difficulties for coastal maintenance. Although hard structures were built in the past to prevent for flooding, nature based solutions are preferred more recently. For the application of nature based solutions, a better understanding of the coastal processes is desired. Dry sand is transported towards the dunes by...

Novel sediment sampling method provides new insights into vertical grain size variability due to marine and aeolian beach processes

In sandy beach systems, the aeolian sediment transport can be governed by the vertical structure of the sediment layers at the bed surface. Here, data collected with a newly developed sand scraper is presented to determine high-resolution vertical grain size variability and how it is affected by marine and aeolian processes. Sediment samples...

A new integrated N-S (north-south) system: Renaturing the lower Thames Estuary

Estuarine area, as a transition area between land and sea, is the most dynamic and complicated area, due to its unique location and diverse ecosystem, but yet it is also the most vulnerable and fragile area, as it may be plagued with flooding risk, erosion, subsidence and etc. As the diagram show below, estuary area is influenced by three...

Impact of sand nourishments on hydrodynamics and swimmer safety

Artificial sand nourishments are a common measure to mitigate coastal erosion problems. Such nourishments can have an impact on currents and waves near the beach, especially when the nourishment has a large size. As nourished beaches often have a recreational function, these altered wave and current patterns may pose a threat to swimmers. This...

Estimating the Cross-Shelf Export of Riverine Materials: Part 1. General Relationships From an Idealized Numerical Model

Rivers deliver large amounts of terrestrially derived materials (such as nutrients, sediments, and pollutants) to the coastal ocean, but a global quantification of the fate of this delivery is lacking. Nutrients can accumulate on shelves, potentially driving high levels of primary production with negative consequences like hypoxia, or be...

Estimating the Cross-Shelf Export of Riverine Materials: Part 2. Estimates of Global Freshwater and Nutrient Export

Rivers deliver large amounts of fresh water, nutrients, and other terrestrially derived materials to the coastal ocean. Where inputs accumulate on the shelf, harmful effects such as hypoxia and eutrophication can result. In contrast, where export to the open ocean is efficient riverine inputs contribute to global biogeochemical budgets....

Coastal Erosion and Solutions: A primer

This primer describes some of the causes of coastal erosion and tries to put into perspective their scale and consequences. There are no uniform causes, just as there are no uniform solutions. Erosion tends to be site-specific. Yet, with careful observation and measurement, a particular problem can be placed in context and draw from the...

Ebb and flood channel systems in the Dutch tidal waters

This paper should be considered as Van Veen's most important publication since his thesis. It summarizes the results of 20 years of intensive study of estuarine and tidal- basin morphodynamics in The Netherlands. The paper is testimony to Van Veen' s keen observational and artistic skills. His approach is nearly "Da Vincian" in the sense that he...

Coastal Dynamics

This book deals on "Coastal Dynamics", which will be defined in a narrow sense as a mathematical theory, which starts from given equations of motion for the sediment, which leads with the continuity equation and given boundary conditions to a calculated (eventually schematized) coastal topography, which is generally a function of time. This is...

Coastal processes along the Ebro, Po and Rhone deltas

Reconstruction of the holocene evolution of the Dutch coast. The Dutch coast. Paper no 2

Large-Scale Coastal Evolution Concept

Large-scale coastal evolution concept. The Dutch coast. Paper No. 9

Rock slopes and gravel beaches under wave attack

Abstract not available

A model for cross-shore sediment transport