Open AccessJournal Article
The Effect of Tide Range on Beach Morphodynamics and Morphology: A Conceptual Beach Model
Reads0
Chats0
TLDR
In this paper, a conceptual model is presented in which beach morphology (beach type) may be predicted using the dimensionless fall velocity and the relative tide range, whereby the mean spring tide range (MSR) is used to calculate the relative time series.Abstract:
Natural beaches may be grouped into several beach types on the basis of breaker height (H b ), wave period (T), high tide sediment fall velocity (w s ) and tide range (TR). These four variables are quantified by two dimensionless parameters: the dimensionless fall velocity (Ω= H b /w s T) used by WRIGHT and SHORT (1984) to classify micro-tidal beaches, and the relative tide range (RTR = TR/H b ) introduced in this paper. The value of the dimensionless fall velocity indicates whether reflective, intermediate or dissipative surf zone conditions will prevail. The relative tide range reflects the relative importance of swash, surf zone and shoaling wave processes. A conceptual model is presented in which beach morphology (beach type) may be predicted using the dimensionless fall velocity and the relative tide range, whereby the mean spring tide range (MSR) is used to calculate the relative tide range. The model consists of the existing micro-tidal beach types, which as RTR Increases, shift from reflective to low tide terrace with and finally without rips; from intermediate to low tide bar and rips and finally ultra-dissipative; and from barred dissipative to non-barred dissipative and finally ultra-dissipative. Using this model, all wave-dominated beaches in all tidal ranges can be classified.read more
Citations
More filters
Book
Ichnology: Organism-Substrate Interactions in Space and Time
TL;DR: In this article, a detailed analysis of the ichnology of a range of depositional environments is presented using examples from the Precambrian to the recent, and the use of trace fossils in facies analysis and sequence stratigraphy is discussed.
Journal ArticleDOI
Sandy shore ecosystems and the threats facing them: some predictions for the year 2025
A.C. Brown,A. McLachlan +1 more
TL;DR: A review of the literature on ocean sandy beaches can be found in this paper, where the authors provide an introduction to much of the relevant literature, and predicting possible states of the system by 2025.
Journal ArticleDOI
Sandy beach ecosystems: key features, sampling issues, management challenges and climate change impacts
Thomas A. Schlacher,Dave S. Schoeman,Jenifer E. Dugan,Mariano Lastra,Alan Jones,Felicita Scapini,Anton McLachlan +6 more
TL;DR: In this paper, the authors summarise the salient features of sandy beaches as functional ecosystems in 50 ‘key statements’; these provide a succinct synopsis of the main structural and functional characteristics of these highly dynamic systems.
Journal ArticleDOI
Variability of shore and shoreline evolution
Marcel J. F. Stive,Stefan Aarninkhof,Luc Hamm,Hans Hanson,Magnus Larson,Kathelijne Mariken Wijnberg,Robert J. Nicholls,Michele Capobianco +7 more
TL;DR: In this article, causes and factors for the variability and the resulting possible evolutions of wave-dominated shores and shorelines, which are illustrated by a number of case studies, are described in terms of a range of different time and space scales.
Journal ArticleDOI
Macrobenthic community structure of soft-bottom sediments at the Belgian Continental Shelf
TL;DR: In this paper, a large number of sites at the Belgian Continental Shelf (BCS) have been sampled for the macrobenthos between 1994 and 2000, and the data of all these research projects were combined and analyzed.
References
More filters
Journal ArticleDOI
Morphodynamic variability of surf zones and beaches: A synthesis
L.D Wright,Andrew D. Short +1 more
TL;DR: In this paper, a synthesis of some results obtained over the period 1979-1982 from a study of beach and surf zone dynamics is presented, dealing with the different natural beach states, the process signatures associated with these states, environmental controls on modal beach state, and the temporal variability of beach state and beach profiles.
Book
Beach Processes and Sedimentation
TL;DR: The Geomorphology of Eroding and Accreting Coasts and the Protection of Our Coasts: An Introduction to the Study of Beaches as discussed by the authors is a good starting point for this paper.
Beach processes and sedimentation.
TL;DR: The Geomorphology of Eroding and Accreting Coasts and the Protection of Our Coasts: An Introduction to the Study of Beaches as discussed by the authors is a good starting point for this paper.
Journal ArticleDOI
What is a wave-dominated coast?
Richard A. Davis,Miles O. Hayes +1 more
TL;DR: In this paper, the relative effects of waves and tides on the morphology of a coast are discussed. And the authors make an association between coastal morphology and the dominant process that operates on the coast in question.