Characteristics and dynamics of multiple intertidal bars, north Lincolnshire, England
Coastal dynamics ; Coastal environment ; Coastal geomorphology ; Digital elevation model ; England ; Interannual variability ; Intertidalzone ; Lincolnshire ; United Kingdom
Dynamique littorale ; England ; Géomorphologie littorale ; Lincolnshire ; Littoral ; Modèle numérique de terrain ; Royaume-Uni ; Topographie en barres et augets ; Variabilité interannuelle ; Zone intertidale
The objectives of this paper are : to examine the geographic distribution of multiple intertidal bars along the coastline of England and Wales to indicate the environmental conditions (geomorphologic setting, waves, tides) that characterize
such morphology; to describe the longshore and cross-shore variability of intertidal bar geometry; and to gain insight into inter- and intra-annual intertidal bar dynamics.
Intertidal forme produced by floating ice in Vestfirdir, Iceland
Banquise ; Cordon de blocs ; Fjord ; Glaciel ; Géographie de l'Europe ; Islande ; Littoral ; Milieu intertidal ; Pavage de blocs ; Zone froide
L'A. met en évidence la présence de formes glacielles il est vrai faiblement développées dans un milieu intertidal à très faible énergie des houles et à glaces de mer assez peu abondantes. (JCB).
variations and wave processes in shallow water depths (swash and surf zone bores), rather than wave height variability and deeper water wave processes (breaking and shoaling waves), that constitutes the main difference between intertidal and subtidal bar
The aims of this review are to identify the dominant morphodynamic processes governing intertidal bar systems and provide a conceptual framework with which these bars can be further investigated. It is the dominant importance of tidal water level
Coastal dynamics ; Coastal environment ; Denmark ; Intertidalzone ; Sand bar ; Sediment transport ; Storm ; Suspended load
Charge en suspension ; Cordon littoral ; Danemark ; Dynamique littorale ; Littoral ; Skallingen ; Tempête ; Transport sédimentaire ; Zone intertidale
This paper examines the processes responsible for the morphodynamics of an intertidal swash bar at Skallingen, Denmark, during 7 successive storms. The contributions of gravity waves, infragravity waves and mean currents to the cross-shore suspended
sediment transport are systematically described and related to the morphological response of the intertidal swash bars at Skallingen.
Location and height of intertidal bars on macrotidal ridge and runnel beaches
Coastal dynamics ; Coastal environment ; Coastal geomorphology ; Comparative study ; Earth surface processes ; England ; France ; Intertidalzone ; Nord-Pas-de-Calais ; United Kingdom
Crête pré-littorale ; Dynamique littorale ; England ; Etude comparée ; France ; Géomorphodynamique ; Géomorphologie littorale ; Littoral ; Nord-Pas-de-Calais ; Royaume-Uni ; Sillon pré-littoral ; Zone intertidale
. It is suggested that the ridges are the result of a combination of swash and surf zone processes acting across the intertidalzone.
The principal aim of this paper is to investigate whether the ridges are preferentially located on the intertidal profile where the water level is stationary for the longest time and whether the height of the ridges increases across the intertidal
Atlantique ; Belgique ; Chenal ; Cordon littoral ; Drainage ; Dynamique littorale ; Littoral ; Marée ; Mer du Nord ; Plage ; Vague ; Zone intertidale
1, dominantly longshore systems essentially limited to the wide intertidalzone; smaller and ephemeral type 2, dominantly cross-shore systems incising bars during spring tides. Channel mobility and impact on beach morphology are expected to increase
The intertidal drainage channels on a macrotidal bar-trough (ridge-and-runnel) beach, the Leffrinckouke beach in the southern North Sea, were monitored during a 17-day survey. This beach is characterized by 2 intertidal drainage channel types : type
Intertidal subsidence and collapse features on wave-exposed, drift-aligned sandy beaches subject to Amazon mud : Cayenne, French Guiana
Beach ; Coastal environment ; Earth surface processes ; French Guiana ; Intertidalzone ; Mass movement ; Sand
Boue ; Guyane française ; Géomorphodynamique ; Littoral ; Mouvement de masse ; Plage ; Sable ; Zone intertidale
This paper briefly reports on the conditions and processes involved in such deformation features, which reflect active mud burial under sand within the intertidal beach profile.
Dynamique littorale ; Littoral ; Pays-Bas ; Transport sédimentaire ; Zone intertidale
The hydrodynamics and the suspended sediment fluxes are studied in detail at the crest and on the seaward slope of a swash bar on the intertidal beach. The small scale morphological behaviour of the beach and the meso scale morphological behaviour
of the nearshore zone is focused on the generation and the migration of bars, and on the parametrization of the morphodynamics. - (AGD)
Short-term intertidal bar mobility on a ridge-and-runnel beach, Merlimont, northern France
Coastal dynamics ; Coastal environment ; Coastal sedimentation ; Digital elevation model ; Earth surface processes ; France ; Intertidalzone ; Longshore current ; Nord-Pas-de-Calais ; Sand bar ; Sediment transport ; Topography
Cordon littoral ; Dynamique littorale ; Dérive littorale ; France ; Géomorphodynamique ; Littoral ; Modèle numérique de terrain ; Nord-Pas-de-Calais ; Sédimentation littorale ; Topographie ; Transport sédimentaire ; Zone intertidale
Digital elevation models and topography profiles of a beach with intertidal bar and through (ridge-and-runnel) morphology in Merlimont, near Somme estuary, were analysed in order to assess patterns of cross-shore and longshore intertidal bar
Canada ; Littoral ; Marée ; Micro-érosion ; Micromorphologie ; Météorisation ; Nova Scotia ; Plate-forme littorale ; Québec ; Sel ; Zone intertidale
. The TMEMs were used to record changes in surface elevation as the rocks dried during the remainder of the 12 h of a semi-diurnal tidal cycle. A similar technique was used on the same rock types at intertidal TMEM stations in the field, as the rock dried
The influence of intertidal bar-trough morphology on sediment transport on macrotidal beaches, northern France
Beach ; Coastal environment ; Coastal geomorphology ; France ; Intertidal bar ; Intertidalzone ; Nord-Pas-de-Calais ; Sand ; Sediment transport ; Trough
Auget ; Barre intertidale ; France ; Géomorphologie littorale ; Littoral ; Nord-Pas-de-Calais ; Plage ; Sable ; Transport sédimentaire ; Zone intertidale
Arena ; Francia ; Geomorfología litoral ; Litoral ; Playa litoral ; Transporte sedimentario ; Zona intertidal
trapping, the AA. examine the possible role played by intertidal bar and through morphology on longshore and onshore-directed sand transport. Results show that intertidal bars are responsible for significant wave energy dissipation leading to a decrease
A new approach to the problem of measuring microtopographical changes on vertical limestones in the intertidalzone, simple and cost-effective, is discussed. It is based on the positioning of a rock removable slab (RRS) in the intertidalzone
Déglaciation ; Eau de fonte ; Irlande ; Isostasie ; Lithostratigraphie ; Littoral ; Micro-organisme ; Niveau marin ; Paléogéographie ; Pléistocène ; Quaternaire ; Zone intertidale
This paper describes an intertidal boulder pavement and associated facies exposed by marine erosion at Cooley Point on the north shore of Dundalk Bay. The boulder pavement is part of a largely submergent facies sequence which is overlain by a late
Dynamique littorale ; Littoral ; Orage ; Pays-Bas ; Système crête-sillon ; Variation saisonnière ; Vitesse du vent ; Zone intertidale
In this study, an intertidal bar and trough system on the beach of Noordwijk was monitored over a 15-month period in order to examine the daily to seasonal sequential cross-shore behaviour and to establish which conditions force or interrupt
This study describes the morphodynamics of multiple intertidal bars in North Lincolnshire during single and lunar tidal cycles under 2 contrasting conditions : first when significant wave height was
frequently exceeded 1 m. The relative importance of swash, surf and shoaling processes in determining morphological change was examined using detailed field observations and a numerical model. The results strongly suggest that changes in the intertidal
morphology are accomplished by surf zone processes rather than by shoaling wave or swash processes. It was found, however, that swash action may induce a significant amount of local morphological change when the high tide mark is located on the upper bar
Aerial photography ; Biogeomorphology ; Channel geometry ; Coastal environment ; Coastal sedimentation ; Estuary ; Europe ; Intertidalzone ; Northwestern Europe ; Photointerpretation ; Plant colonization ; Tidal marsh ; Time series ; Vegetation
; Végétation ; Zone intertidale
Colonización vegetal ; Estuario ; Europa ; Europa del Noroeste ; Fotografía aérea ; Fotointerpretación ; Geometria hidráulica ; Litoral ; Marisma litoral ; Sedimentación litoral ; Serie cronológica ; Vegetación ; Zona intertidal
The long-term (10-100 years) evolution of tidal channels is generally considered to interact with bio-geomorphic evolution of the surrounding intertidal platform. Here the AA. studied how the geometric properties of tidal channels (channel drainage
density and channel width) change as (1) vegetation establishes on an initially bare intertidal platform and (2) sediment accretion on the intertidal platform leads to a reduction in the tidal prism (i.e. water volume that during a tidal cycle floods
to and drains back from the intertidal platform). Based on a time series of aerial photographs and digital elevation models, the AA. derived the channel geometric properties at different time steps during the evolution from an initially low-elevated bare tidal
This paper reports on a laboratory investigation to determine the effect of alternate wetting and drying and debris removal in the intertidalzone of rocky coasts. Many of the cores experienced very little to no breakdown, particularly those from
rates decrease with elevation within the intertidalzone, probably beacause rocks require much longer to desorb than to absorb water.
Changement climatique ; Encoche ; Erosion littorale ; Falaise ; Littoral ; Modèle ; Météorisation ; Niveau marin ; Plate-forme littorale ; Vitesse d'érosion ; Zone intertidale ; Zone intertropicale
Acantilado ; Cambio climático ; Erosión litoral ; Litoral ; Meteorización ; Modelo ; Nivel del mar ; Plataforma litoral ; Velocidad de erosión ; Zona intertidal ; Zona intertropical
Through a review of previously published data across the tropics, average cliff face erosion rates are calculated as intertidal erosion rates and subtidal erosion rates. Intertidal erosion rates are variable within and across latitudinal ranges
. A consideration of temporal variations in intertidal erosion rates provides insights into the potential impacts of climate change on the erosion dynamics of rock coasts in the tropics. This paper highlights some of the interactions over time and space between
This study represents an ecological investigation of marginal mangroves occurring at the transitional zone where oceanic influences and fresh water inputs from upland streams are equally felt. The objectives are: to identify the physiographic