Analysis of Surface Wave Attenuation in Mangrove Forests

Hadi, Safwan; Latief, Hamzah; Muliddin, Muliddin

doi:10.5614/itbj.eng.sci.2003.35.2.1

Cited by 11 publications

(6 citation statements)

References 4 publications

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“…For the high density forest, the wave height reduction rate was higher. Hadi et al (2003) in their numerical studies also found that the rate of wave energy dissipation was higher for the case of denser mangrove forests.…”

Section: Factors Influencing Performance Of Mangrovementioning

confidence: 85%

“…On the other hand, Hiraishi and Harada (2003) simulated the tsunami reduction effect of coastal trees with higher density of 0.3 trees/m² and reported that it would require a reduced forest width of 100 m to give wave height reduction of more than 50%. Hadi et al (2003) analyzed two types of mangrove forests, namely Rhizophora and Ceriops forests and found that Rhizophora forest attenuated wave energy most effectively. They also suggested that the resulting rate of wave energy attenuation depended strongly on the density of mangrove forest and on the diameter of mangrove roots and trunks.…”

Section: Previous Researchesmentioning

confidence: 99%

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Effectiveness of Mangrove Forests in Surface Wave Attenuation: A Review

Hashim¹,

Catherine²,

Takaijudin³

2013

RJASET

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For once, mangrove forests were surprisingly resistant to the forceful impacts of the Indian Ocean Tsunami of December 2004 which swept away entire villages and caused the deaths of approximately 200,000 people. It was reported that human death and loss of property were significantly reduced in areas of dense mangrove forests in southeastern India. As the importance of mangrove is gaining attention lately, numerous countries have started to replant mangroves for coastal protection. This study discusses the extensive researches that have been conducted to study the role of mangrove forests in wave energy dissipation. These include field measurements, numerical studies and laboratory experiments. The findings illustrate that mangrove species, density, forest width, forest structure, age, water depth and incident wave height are among the factors affecting the performance of mangroves in attenuating waves. Dense forest, larger forest width, bigger trunk diameter and higher wave height resulted in relatively more wave energy dissipation by mangroves.

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Section: Factors Influencing Performance Of Mangrovementioning

confidence: 85%

Section: Previous Researchesmentioning

confidence: 99%

Effectiveness of Mangrove Forests in Surface Wave Attenuation: A Review

Hashim¹,

Catherine²,

Takaijudin³

2013

RJASET

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“…The drag friction slows down the wave motion's propagation into the mangrove forests [24,25,26]. The waves subsequently lose part of their energy and, therefore, attenuating them.…”

Section: Figure 2 Wave Attenuation By Mangrovesmentioning

confidence: 99%

Mangroves As Coastal Bio-Shield: A Review of Mangroves Performance in Wave Attenuation

Kamil

Takaijudin

Hashim³

2021

Civ Eng J

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Mangroves have been recognized as soft structures that provide coastline protection. The capability of dampening waves helps minimize destruction from catastrophic events including erosive wave attacks, torrential storms, and tsunamis. Mangroves act as the first line of coastal defense in natural tragedies such as during the Super Typhoon Haiyan 2013 and Indian Ocean Tsunami 2004, whereby the leeward mangrove area encountered less damage than the unprotected area. This has further brought the attention of researchers to study the attenuation performance of these coastal vegetations. Based on an extensive literature review, this paper discusses the attenuation mechanism of mangroves, the factors influencing the dissipation performance, studies on mangrove dissipation via different approaches, the dissipation efficiency, mangrove conservation and rehabilitation efforts in Malaysia and implementation of mangrove as coastal bio-shield in other countries. The study highlights that mangrove parameters (such as species, width, density etc.) and wave parameters (such as wave period and incident wave height) are among the contributing factors in mangroves-induced wave attenuation, with different efficiency rates performed by different mangroves and waves parameters. Towards that end, several improvements are proposed for future research such as to incorporate all influencing dissipation factors with specific analysis for each species of mangroves, to perform validation on the studied mangroves attenuation capacity in different settings and circumstances, as well as to address the extent of protection by the rehabilitated mangroves. A systematic and effective management strategy incorporating ecological, forestry, and coastal engineering knowledge should be considered to ensure a sustainable mangroves ecosystem and promising coastline protection by mangroves. Doi: 10.28991/cej-2021-03091772 Full Text: PDF

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“…[20] studied sediment transport brought by tidal currents in mangrove forest. Mangrove forest reduces the forward speed of waves, resulting in a smaller flooded area [21]. [22] observed steady channel flow with uniform inlet flow velocity 0.2 m/s and flow in creeks with wave amplitude 1 m to study the blockage characteristics and the drag force of Mangroves.…”

Section: Introductionmentioning

confidence: 99%

Wind Flow Simulation around Rhizophora Mangrove Roots Using Computational Fluid Dynamics

Rahuman

Ismail

Varghese

et al. 2022

Journal of Nanomaterials

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The characteristics of Rhizophora mangrove root structures and its efficiency in velocity dissipation process of heavy wind are studied in this paper. The influence of Rhizophora Mangrove roots on severe tropical storm (88 -117 km/hr.), intense tropical cyclone (166-212 km/hr.), and very intense tropical cyclone (above 212 km/hr.) is investigated by simulating wind flow around these roots with inlet velocities 100 km/hr., 200 km/hr., and 300 km/hr. ANSYS Fluent software is used for developing the computational fluid dynamic (CFD) model and to perform simulation and analysis. The flow velocity profile reveals that these mangrove root structures have a significant impact on the severe and intense wind flow. It is found that the Rhizophora root structures reduce the velocity of the wind by more than 80% of the inlet velocity. This information can be utilized to visualize and better understand the benefits of these root structures and to reestablish mangrove forest, create new breakwater models, and to strengthen the existing ones.

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Analysis of Surface Wave Attenuation in Mangrove Forests

Cited by 11 publications

References 4 publications

Effectiveness of Mangrove Forests in Surface Wave Attenuation: A Review

Effectiveness of Mangrove Forests in Surface Wave Attenuation: A Review

Mangroves As Coastal Bio-Shield: A Review of Mangroves Performance in Wave Attenuation

Wind Flow Simulation around Rhizophora Mangrove Roots Using Computational Fluid Dynamics

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