{"id":9246,"date":"2022-09-28T10:27:17","date_gmt":"2022-09-28T15:27:17","guid":{"rendered":"https:\/\/ewn.erdc.dren.mil\/?p=9246"},"modified":"2023-02-25T16:02:41","modified_gmt":"2023-02-25T22:02:41","slug":"wave-attenuation-of-coastal-mangroves-at-a-near-prototype-scale","status":"publish","type":"publications","link":"https:\/\/ewn.erdc.dren.mil\/publications\/archive\/wave-attenuation-of-coastal-mangroves-at-a-near-prototype-scale\/","title":{"rendered":"Wave attenuation of coastal mangroves at a near-prototype scale"},"content":{"rendered":"\n<p class=\"float-left\">A physical model study investigating the dissipation of wave energy by a 1:2.1 scale North American red mangrove forest was performed in a large-scale flume. The objectives were to measure the amount of wave attenuation afforded by mangroves, identify key hydrodynamic parameters influencing wave attenuation, and provide methodologies for application. Seventy-two hydrodynamic conditions, comprising irregular and regular waves, were tested. The analysis related the dissipation to three formulations that can provide estimates of wave attenuation for flood risk management projects considering mangroves: damping coefficient \u03b2, drag coefficient C\ud835\udc37, and Manning\u2019s roughness coefficient \ud835\udc5b. The attenuation of the incident wave height through the 15.12 m long, 1:2.1 scale mangrove forest was exponential in form and varied from 13%\u201377%. Water depth and incident wave height strongly influenced the amount of wave attenuation. Accounting for differences in water depth using the sub-merged volume fraction resulted in a common fit of the damping coefficient as a function of relative wave height and wave steepness. The drag coefficient demonstrated a stronger relationship with the Keulegan\u2013Carpenter number than the Reynolds number. The linear relationship between relative depth and Manning\u2019s \ud835\udc5b was stronger than that between Manning\u2019s \ud835\udc5b and either relative wave height or wave steepness.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>A physical model study investigating the dissipation of wave energy by a 1:2.1 scale North American red mangrove forest was performed in a large-scale flume. The objectives were to measure the amount of wave attenuation afforded by mangroves, identify key hydrodynamic parameters influencing wave attenuation, and provide methodologies for application. Seventy-two hydrodynamic conditions, comprising irregular [&hellip;]<\/p>\n","protected":false},"featured_media":9255,"template":"","tags":[],"class_list":["post-9246","publications","type-publications","status-publish","has-post-thumbnail","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Wave attenuation of coastal mangroves at a near-prototype scale - Engineering With Nature<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/ewn.erdc.dren.mil\/publications\/archive\/wave-attenuation-of-coastal-mangroves-at-a-near-prototype-scale\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Wave attenuation of coastal mangroves at a near-prototype scale - Engineering With Nature\" \/>\n<meta property=\"og:description\" content=\"A physical model study investigating the dissipation of wave energy by a 1:2.1 scale North American red mangrove forest was performed in a large-scale flume. The objectives were to measure the amount of wave attenuation afforded by mangroves, identify key hydrodynamic parameters influencing wave attenuation, and provide methodologies for application. 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