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105/01/13 14:30 吳偉成博士（Pacific Northwest National Laboratory (PNNL) in Seattle） 演講
演講公告
張貼人：網站管理員 ╱ 公告日期：2016-01-12演 講 公 告
主講人：吳偉成 博士
地點：中央大學科學一館S-325教室
摘要：
講題：Effects of Wave Nonlinearity and Vertical Variation of Vegetation Density on Wave Attenuation
主講人：吳偉成 博士
Pacific Northwest National Laboratory (PNNL) in Seattle
時間：01月13日（星期三）下午2點30分
地點：中央大學科學一館S-325教室
摘要：
The understanding and prediction how coastal wetland vegetation attenuates wave action has received renewed attention with global climate change impacts and increasing populations on coastlines. Conventional attenuation models utilize empirical drag coefficients, but these coefficients exhibit a wide range of values and there is some uncertainty in the relative importance of plant flexibility, wave nonlinearity, and vertical density variations of the above ground biomass. Better knowledge of how to predict the wave attenuation accurately considering wave nonlinearity and biomechanical properties will improve parameterization to evaluate the ecosystem services provided by coastal vegetation. This topic focuses on three core aspects that evaluate and improve existing analytical and numerical models for predicting wave attenuation by vegetation: (a) effects of wave steepness and relative water depth on wave attenuation by emergent vegetation, (b) effects of vertical variation in vegetation density on wave attenuation, and (c) modeling wave attenuation induced by the vertical density variations of vegetation.
最後修改時間：2016-01-12 AM 9:02
