Large-scale 3-D experiments of wave and current interaction with real vegetation. Part 2: Experimental analysis

M. Maza; J. L. Lara; I. J. Losada; B. Ondiviela; J. Trinogga; T. J. Bouma

doi:10.1016/j.coastaleng.2015.09.010

Large-scale 3-D experiments of wave and current interaction with real vegetation. Part 2: Experimental analysis

M. Maza, J. L. Lara^*, I. J. Losada, B. Ondiviela, J. Trinogga, T. J. Bouma

^*Corresponding author for this work

Research output: Contribution to journal › Article › Academic › peer-review

Abstract

This paper assesses the influence of different flow and vegetation parameters on the wave attenuation provided by two contrasting salt marsh species: Puccinellia maritima and Spartina anglica. Different water depths and wave parameters (height and period) are considered for both regular and irregular waves with and without an underlying uniform current coming from different directions. The study of the submergence ratio (h/h_v) influence shows that wave damping coefficient rapidly decreases as the plant submergence ratio increases. The high nonlinearities found in the wave-current interaction lead to different wave damping patterns in comparison to wave-only conditions. A smaller wave damping is found for waves and current acting in the same direction and an increase in the wave damping rate is obtained for waves and current flowing in the opposite direction. These wave and current tests allow for the studying of the energy dissipation produced by the vegetation, increasing our knowledge about flow and plant interaction in estuarine conditions. The biomechanical properties of the two real salt marshes used in the experiments are also evaluated and related to wave damping revealing a higher attenuation for stiffer vegetation. Both, the vegetation density and the biomass strongly influence wave damping. Higher density and biomass values lead to higher attenuation rates for both species.

Original language	English
Pages (from-to)	73-86
Number of pages	14
Journal	Coastal Engineering
Volume	106
DOIs	https://doi.org/10.1016/j.coastaleng.2015.09.010
Publication status	Published - 1 Dec 2015
Externally published	Yes

Bibliographical note

Funding Information:
M. Maza is indebted to the MEC (Ministerio de Educación, Cultura y Deporte, Spain) for the funding provided in the FPU (Formación del Profesorado Universitario) studentship ( BOE-A-2012-6238 ). This work has been partially funded under the RETOS INVESTIGACION 2014 program of the Spanish Ministry of Economy and Competitiveness ( BIA-2014-59718-R ). Part of this work has been funded by the European Regional Development Fund .

Funding Information:
J. Trinogga and T.J. Bouma are indebted to the German Ministry for Research and Education for funding via the COMTESS project (grant no. 01LL0911 A-G ). Furthermore we are grateful to Michael Kleyer for his constructive support.

Publisher Copyright:
© 2015 Elsevier B.V.

Funding

M. Maza is indebted to the MEC (Ministerio de Educación, Cultura y Deporte, Spain) for the funding provided in the FPU (Formación del Profesorado Universitario) studentship ( BOE-A-2012-6238 ). This work has been partially funded under the RETOS INVESTIGACION 2014 program of the Spanish Ministry of Economy and Competitiveness ( BIA-2014-59718-R ). Part of this work has been funded by the European Regional Development Fund . J. Trinogga and T.J. Bouma are indebted to the German Ministry for Research and Education for funding via the COMTESS project (grant no. 01LL0911 A-G ). Furthermore we are grateful to Michael Kleyer for his constructive support.

Keywords

Collinear and non-collinear waves and currents
Large scale 3-D experiments
Real vegetation

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10.1016/j.coastaleng.2015.09.010

Cite this

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title = "Large-scale 3-D experiments of wave and current interaction with real vegetation. Part 2: Experimental analysis",

abstract = "This paper assesses the influence of different flow and vegetation parameters on the wave attenuation provided by two contrasting salt marsh species: Puccinellia maritima and Spartina anglica. Different water depths and wave parameters (height and period) are considered for both regular and irregular waves with and without an underlying uniform current coming from different directions. The study of the submergence ratio (h/hv) influence shows that wave damping coefficient rapidly decreases as the plant submergence ratio increases. The high nonlinearities found in the wave-current interaction lead to different wave damping patterns in comparison to wave-only conditions. A smaller wave damping is found for waves and current acting in the same direction and an increase in the wave damping rate is obtained for waves and current flowing in the opposite direction. These wave and current tests allow for the studying of the energy dissipation produced by the vegetation, increasing our knowledge about flow and plant interaction in estuarine conditions. The biomechanical properties of the two real salt marshes used in the experiments are also evaluated and related to wave damping revealing a higher attenuation for stiffer vegetation. Both, the vegetation density and the biomass strongly influence wave damping. Higher density and biomass values lead to higher attenuation rates for both species.",

keywords = "Collinear and non-collinear waves and currents, Large scale 3-D experiments, Real vegetation",

author = "M. Maza and Lara, {J. L.} and Losada, {I. J.} and B. Ondiviela and J. Trinogga and Bouma, {T. J.}",

note = "Funding Information: M. Maza is indebted to the MEC (Ministerio de Educaci{\'o}n, Cultura y Deporte, Spain) for the funding provided in the FPU (Formaci{\'o}n del Profesorado Universitario) studentship ( BOE-A-2012-6238 ). This work has been partially funded under the RETOS INVESTIGACION 2014 program of the Spanish Ministry of Economy and Competitiveness ( BIA-2014-59718-R ). Part of this work has been funded by the European Regional Development Fund . Funding Information: J. Trinogga and T.J. Bouma are indebted to the German Ministry for Research and Education for funding via the COMTESS project (grant no. 01LL0911 A-G ). Furthermore we are grateful to Michael Kleyer for his constructive support. Publisher Copyright: {\textcopyright} 2015 Elsevier B.V.",

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AU - Maza, M.

AU - Lara, J. L.

AU - Losada, I. J.

AU - Ondiviela, B.

AU - Trinogga, J.

AU - Bouma, T. J.

N1 - Funding Information: M. Maza is indebted to the MEC (Ministerio de Educación, Cultura y Deporte, Spain) for the funding provided in the FPU (Formación del Profesorado Universitario) studentship ( BOE-A-2012-6238 ). This work has been partially funded under the RETOS INVESTIGACION 2014 program of the Spanish Ministry of Economy and Competitiveness ( BIA-2014-59718-R ). Part of this work has been funded by the European Regional Development Fund . Funding Information: J. Trinogga and T.J. Bouma are indebted to the German Ministry for Research and Education for funding via the COMTESS project (grant no. 01LL0911 A-G ). Furthermore we are grateful to Michael Kleyer for his constructive support. Publisher Copyright: © 2015 Elsevier B.V.

PY - 2015/12/1

Y1 - 2015/12/1

N2 - This paper assesses the influence of different flow and vegetation parameters on the wave attenuation provided by two contrasting salt marsh species: Puccinellia maritima and Spartina anglica. Different water depths and wave parameters (height and period) are considered for both regular and irregular waves with and without an underlying uniform current coming from different directions. The study of the submergence ratio (h/hv) influence shows that wave damping coefficient rapidly decreases as the plant submergence ratio increases. The high nonlinearities found in the wave-current interaction lead to different wave damping patterns in comparison to wave-only conditions. A smaller wave damping is found for waves and current acting in the same direction and an increase in the wave damping rate is obtained for waves and current flowing in the opposite direction. These wave and current tests allow for the studying of the energy dissipation produced by the vegetation, increasing our knowledge about flow and plant interaction in estuarine conditions. The biomechanical properties of the two real salt marshes used in the experiments are also evaluated and related to wave damping revealing a higher attenuation for stiffer vegetation. Both, the vegetation density and the biomass strongly influence wave damping. Higher density and biomass values lead to higher attenuation rates for both species.

AB - This paper assesses the influence of different flow and vegetation parameters on the wave attenuation provided by two contrasting salt marsh species: Puccinellia maritima and Spartina anglica. Different water depths and wave parameters (height and period) are considered for both regular and irregular waves with and without an underlying uniform current coming from different directions. The study of the submergence ratio (h/hv) influence shows that wave damping coefficient rapidly decreases as the plant submergence ratio increases. The high nonlinearities found in the wave-current interaction lead to different wave damping patterns in comparison to wave-only conditions. A smaller wave damping is found for waves and current acting in the same direction and an increase in the wave damping rate is obtained for waves and current flowing in the opposite direction. These wave and current tests allow for the studying of the energy dissipation produced by the vegetation, increasing our knowledge about flow and plant interaction in estuarine conditions. The biomechanical properties of the two real salt marshes used in the experiments are also evaluated and related to wave damping revealing a higher attenuation for stiffer vegetation. Both, the vegetation density and the biomass strongly influence wave damping. Higher density and biomass values lead to higher attenuation rates for both species.

KW - Collinear and non-collinear waves and currents

KW - Large scale 3-D experiments

KW - Real vegetation

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U2 - 10.1016/j.coastaleng.2015.09.010

DO - 10.1016/j.coastaleng.2015.09.010

M3 - Article

AN - SCOPUS:84944710143

SN - 0378-3839

VL - 106

SP - 73

EP - 86

JO - Coastal Engineering

JF - Coastal Engineering

ER -

Large-scale 3-D experiments of wave and current interaction with real vegetation. Part 2: Experimental analysis

Abstract

Bibliographical note

Funding

Keywords

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