000162417 001__ 162417
000162417 005__ 20180913060355.0
000162417 0247_ $$2doi$$a10.1029/2010JC006345
000162417 022__ $$a0148-0227
000162417 02470 $$2ISI$$a000285019100005
000162417 037__ $$aARTICLE
000162417 245__ $$aWave induced velocities inside a model seagrass bed
000162417 269__ $$a2010
000162417 260__ $$bAmerican Geophysical Union$$c2010
000162417 336__ $$aJournal Articles
000162417 520__ $$aLaboratory measurements reveal the flow structure within and above a model seagrass meadow (dynamically similar to Zostera marina) forced by progressive waves. Despite being driven by purely oscillatory flow, a mean current in the direction of wave propagation is generated within the meadow. This mean current is forced by a nonzero wave stress, similar to the streaming observed in wave boundary layers. The measured mean current is roughly four times that predicted by laminar boundary layer theory, with magnitudes as high as 38% of the near‐bed orbital velocity. A simple theoretical model is developed to predict the magnitude of this mean current based on the energy dissipated within the meadow. Unlike unidirectional flow, which can be significantly damped within a meadow, the in‐canopy orbital velocity is not significantly damped. Consistent with previous studies, the reduction of in‐canopy velocity is a function of the ratio of orbital excursion and blade spacing.
000162417 6531_ $$aseagrass
000162417 6531_ $$aoscillatory flow
000162417 6531_ $$awave induced current
000162417 6531_ $$avegetated flow
000162417 700__ $$aNepf, Heidi
000162417 773__ $$j115$$tJOURNAL OF GEOPHYSICAL RESEARCH
000162417 8564_ $$s958756$$uhttps://infoscience.epfl.ch/record/162417/files/paper_seagrass.pdf$$yn/a$$zn/a
000162417 909C0 $$0252101$$pECOL$$xU11221
000162417 909CO $$ooai:infoscience.tind.io:162417$$particle$$pENAC
000162417 917Z8 $$x191837
000162417 937__ $$aEPFL-ARTICLE-162417
000162417 973__ $$aOTHER$$rREVIEWED$$sPUBLISHED
000162417 980__ $$aARTICLE