Kelp Forest Drag Coefficients Derived from Tidal Flow Data
Kelp Forest Drag Coefficients Derived from Tidal Flow Data
复制标题
由潮汐流数据得出的海带森林阻力系数
DOI:
10.1007/s12237-022-01098-2
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发表时间:
2022
影响因子:
2.7
通讯作者:
Woodson, C. Brock
中科院分区:
文献类型:
--
作者:
Monismith, Stephen;Alnajjar, Maha;Daly, Margaret;Valle-Levinson, Arnoldo;Juarez, Braulio;Fagundes, Matheus;Bell, Tom;Woodson, C. Brock
We present an approach for estimating drag coefficients for depth-averaged tidal flows that uses the ratio of observed RMS velocities to the RMS velocities that would be observed without bottom friction. We find that this ratio,R, depends on a single non-dimensional number,, whereCDis the drag coefficient, andCis the phase speed of a tidal wave with amplitudeand frequency, in water of depthh. The functionR(P) can be inverted to solve forCDusing measured values ofR. Taking advantage of a unique multi-year record of tidal flows on Isla Nativdad, Baja California, Mexico, during which time the kelp forest there varied between non-existent and dense, we use this method to quantify the effect of kelp biomass on drag. This analysis shows that a maximum value ofCD≈ 0.04 is reached for relatively low values of kelp biomass, which may be an effect of sheltering (reductions in the velocity creating drag due to the close proximity of bundles of kelp stipes). However, values as large as 0.015 were observed when the water column experienced strong secondary flows in the presence of strong density stratification. Given that the long-term measurements were made near a coastal headland, we argue that this may reflect variations in secondary flow strength due to stratification. Lastly, our measurements show little evidence of enhancement of drag by surface waves.
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影响因子:
--
作者:
Johanna H. Rosman;J. Koseff;S. Monismith;Jamie Grover
通讯作者:
Johanna H. Rosman;J. Koseff;S. Monismith;Jamie Grover
影响因子:
3.5
作者:
Rogers, Justin S.;Maticka, Samantha A.;Monismith, Stephen G.
通讯作者:
Monismith, Stephen G.
DOI:
--
发表时间:
2013
期刊:
影响因子:
--
作者:
Johanna H. Rosman;Mark W. Denny;R. B. Zeller;S. Monismith;J. Koseff
通讯作者:
J. Koseff
DOI:
--
发表时间:
2017
期刊:
影响因子:
--
作者:
C. Boch;S. Litvin;F. Micheli;G. D. De Leo;Emilius A Aalto;C. Lovera;Brock Woodson;S. Monismith;J. Barry
通讯作者:
J. Barry
DOI:
10.1029/2018jc014862
发表时间:
2019
期刊:
Journal of Geophysical Research: Oceans
影响因子:
--
作者:
Monismith, Stephen G.;Hirsh, Heidi;Batista, Natasha;Francis, Holly;Egan, Galen;Dunbar, Robert B.
通讯作者:
Dunbar, Robert B.