Characteristics and dynamics of crescentic bar events in an open, tideless beach

Rinse de Swart; F. Ribas; B.G. Ruessink; Gonzalo Simarro; J. Guillen

Characteristics and dynamics of crescentic bar events in an open, tideless beach

Rinse de Swart, F. Ribas, B.G. Ruessink, Gonzalo Simarro, J. Guillen

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Academic

Abstract

Crescentic bar events at Castelldefels beach (NW Mediterranean) have been characterised using a 4.25 years dataset (October 2010-December 2014) of time-exposure video images. Crescentic bars are observed during 41% of the study period, with an irregular distribution of the events in the different years. The crescentic bars have a lifetime that varies from 1 to over 100 days, a mean wavelength of 245 m and a mean amplitude of 9 m. The bars are observed in relatively low-energetic wave conditions with a wide variety of wave angles. The formation of crescentic bars also depends on the antecedent bathymetry, in particular crescentic bar events only occur when the sandbar is located at least at 50 m from the shoreline. Crescentic bar destruction at Castelldefels beach is observed in both low- and high energetic wave conditions, but the angle of incidence is always oblique.

Original language	English
Title of host publication	Proceedings Coastal Dynamics 2017
Editors	Troels Aagaard, Rolf Deigaard, David Fuhrman
Pages	555-566
Publication status	Published - 2017
Event	Coastal Dynamics 2017 - Helsingør, Denmark Duration: 12 Jun 2017 → 16 Jun 2017 http://www.coastaldynamics2017.dk/

Conference

Conference	Coastal Dynamics 2017
Country/Territory	Denmark
City	Helsingør
Period	12/06/17 → 16/06/17
Internet address	http://www.coastaldynamics2017.dk/

Keywords

nearshore morphodynamics
Castelldefels beach
bar events
video observations
crescentic bars

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http://coastaldynamics2017.dk/onewebmedia/192_deSwart.pdfLicence: Unspecified

Cite this

@inproceedings{f06bdd27ee774966b46c9869867f4f1f,

title = "Characteristics and dynamics of crescentic bar events in an open, tideless beach",

abstract = "Crescentic bar events at Castelldefels beach (NW Mediterranean) have been characterised using a 4.25 years dataset (October 2010-December 2014) of time-exposure video images. Crescentic bars are observed during 41% of the study period, with an irregular distribution of the events in the different years. The crescentic bars have a lifetime that varies from 1 to over 100 days, a mean wavelength of 245 m and a mean amplitude of 9 m. The bars are observed in relatively low-energetic wave conditions with a wide variety of wave angles. The formation of crescentic bars also depends on the antecedent bathymetry, in particular crescentic bar events only occur when the sandbar is located at least at 50 m from the shoreline. Crescentic bar destruction at Castelldefels beach is observed in both low- and high energetic wave conditions, but the angle of incidence is always oblique.",

keywords = "nearshore morphodynamics, Castelldefels beach, bar events, video observations, crescentic bars",

author = "{de Swart}, Rinse and F. Ribas and B.G. Ruessink and Gonzalo Simarro and J. Guillen",

year = "2017",

language = "English",

pages = "555--566",

editor = "Troels Aagaard and Rolf Deigaard and David Fuhrman",

booktitle = "Proceedings Coastal Dynamics 2017",

note = "Coastal Dynamics 2017 ; Conference date: 12-06-2017 Through 16-06-2017",

url = "http://www.coastaldynamics2017.dk/",

}

TY - GEN

T1 - Characteristics and dynamics of crescentic bar events in an open, tideless beach

AU - de Swart, Rinse

AU - Ribas, F.

AU - Ruessink, B.G.

AU - Simarro, Gonzalo

AU - Guillen, J.

PY - 2017

Y1 - 2017

N2 - Crescentic bar events at Castelldefels beach (NW Mediterranean) have been characterised using a 4.25 years dataset (October 2010-December 2014) of time-exposure video images. Crescentic bars are observed during 41% of the study period, with an irregular distribution of the events in the different years. The crescentic bars have a lifetime that varies from 1 to over 100 days, a mean wavelength of 245 m and a mean amplitude of 9 m. The bars are observed in relatively low-energetic wave conditions with a wide variety of wave angles. The formation of crescentic bars also depends on the antecedent bathymetry, in particular crescentic bar events only occur when the sandbar is located at least at 50 m from the shoreline. Crescentic bar destruction at Castelldefels beach is observed in both low- and high energetic wave conditions, but the angle of incidence is always oblique.

AB - Crescentic bar events at Castelldefels beach (NW Mediterranean) have been characterised using a 4.25 years dataset (October 2010-December 2014) of time-exposure video images. Crescentic bars are observed during 41% of the study period, with an irregular distribution of the events in the different years. The crescentic bars have a lifetime that varies from 1 to over 100 days, a mean wavelength of 245 m and a mean amplitude of 9 m. The bars are observed in relatively low-energetic wave conditions with a wide variety of wave angles. The formation of crescentic bars also depends on the antecedent bathymetry, in particular crescentic bar events only occur when the sandbar is located at least at 50 m from the shoreline. Crescentic bar destruction at Castelldefels beach is observed in both low- and high energetic wave conditions, but the angle of incidence is always oblique.

KW - nearshore morphodynamics

KW - Castelldefels beach

KW - bar events

KW - video observations

KW - crescentic bars

M3 - Conference contribution

SP - 555

EP - 566

BT - Proceedings Coastal Dynamics 2017

A2 - Aagaard, Troels

A2 - Deigaard, Rolf

A2 - Fuhrman, David

T2 - Coastal Dynamics 2017

Y2 - 12 June 2017 through 16 June 2017

ER -

Characteristics and dynamics of crescentic bar events in an open, tideless beach

Abstract

Conference

Keywords

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