气候变化领域集成服务门户(CCPortal): Bottom Drag Varies Seasonally With Biological Roughness

CCPortal

DOI	10.1029/2020GL088425
	Bottom Drag Varies Seasonally With Biological Roughness
	Egan G.; Chang G.; Revelas G.; Monismith S.; Fringer O.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:15
英文摘要	Over the course of a year, we conducted three field deployments in South San Francisco Bay to examine seasonal variability in bottom drag. Our data consisted of turbulence measurements both within and outside the bottom boundary layer and benthic characterization surveys adjacent to our study site. Our results suggest that canopies of benthic worm and amphipod feeding tubes, which were denser during summer, can increase the drag coefficient by up to a factor of three relative to the smoother beds found in winter and spring. The extent of the drag increase varied depending on the measurement device, with the greatest increase inferred by measurements taken further from the bed. The small scale and temporally varying population densities of these living roughness elements pose significant challenges for hydrodynamic models, and future work is needed to begin incorporating benthic biology statistics into drag coefficient parameterizations. © 2020. American Geophysical Union. All Rights Reserved.
英文关键词	Boundary layers; Drag coefficient; Population statistics; Bottom boundary layer; Hydrodynamic model; Measurement device; Population densities; Roughness elements; San Francisco Bay; Seasonal variability; Turbulence measurements; Drag; amphipod; benthic boundary layer; drag coefficient; population density; seasonal variation; turbulence; California; San Francisco Bay; United States
语种	英语
来源期刊	Geophysical Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/169987
作者单位	Department of Civil and Environmental Engineering, Stanford University, Stanford, CA, United States; Integral Consulting Inc., Santa Cruz, CA, United States; Integral Consulting Inc., Olympia, WA, United States
推荐引用方式 GB/T 7714	Egan G.,Chang G.,Revelas G.,et al. Bottom Drag Varies Seasonally With Biological Roughness[J],2020,47(15).
APA	Egan G.,Chang G.,Revelas G.,Monismith S.,&Fringer O..(2020).Bottom Drag Varies Seasonally With Biological Roughness.Geophysical Research Letters,47(15).
MLA	Egan G.,et al."Bottom Drag Varies Seasonally With Biological Roughness".Geophysical Research Letters 47.15(2020).