IOCAS-IR  > 海洋环流与波动重点实验室
The Effect of Discharge, Tides, and Wind on Lift-Off Turbulence
Wang, Jianfeng1,5; MacDonald, Daniel G.2; Orton, Philip M.3; Cole, Kelly4; Lan, Jian5
2015-11-01
Source PublicationESTUARIES AND COASTS
Volume38Issue:6Pages:2117-2131
SubtypeArticle
AbstractData from three deployments of a 1200 kHz moored Acoustic Doppler Current Profiler (ADCP) were used to study the factors affecting turbulent kinetic energy (TKE) production in the lift-off zone of a mid-sized river plume (Merrimack River, Newburyport, MA) during the spring freshets of 2007, 2010, and 2011. TKE production was estimated from the ADCP data, during periods of minimal wave activity, using the variance method, with significant variability in plume thickness and TKE production observed between ebbs. Correlations with this observed variability and the primary environmental variables, such as river flow, wind speed/direction, and tidal range, were noted. On the basis of these observations, we quantify the contribution of these forcing mechanisms to the observed TKE production using an empirical approach based on the marginal value of the discharge Froude number (which is scaled from the environmental variables) above a critical value of one. The resulting regression provides a means for estimating TKE production in the lift-off zone as a function of only the environmental variables, and produces results consistent with previous observations from other turbulence measurement techniques in the Merrimack plume. The regression also provides an indication of the relative importance of the various forcing mechanisms, and suggests that onshore (east) winds and river discharge are the most important factors in controlling TKE production in the Merrimack plume, with tidal range of lesser significance.
KeywordTurbulent Kinetic Energy Production River Plume Lift-off Zone Adcp Variance Method
DOI10.1007/s12237-015-9958-y
Indexed BySCI
Language英语
WOS IDWOS:000362580300023
Citation statistics
Document Type期刊论文
Identifierhttp://ir.qdio.ac.cn/handle/337002/52404
Collection海洋环流与波动重点实验室
Affiliation1.Chinese Acad Sci, Inst Oceanol, Key Lab Ocean Circulat & Waves, Qingdao, Shandong, Peoples R China
2.Univ Massachusetts Dartmouth, Dept Civil & Environm Engn, N Dartmouth, MA USA
3.Stevens Inst Technol, Davidson Lab, Hoboken, NJ 07030 USA
4.Texas A&M Univ, Dept Oceanog, College Stn, TX 77843 USA
5.Ocean Univ China, Phys Oceanog Lab, Qingdao, Shandong, Peoples R China
First Author AffilicationKey Laboratory of Ocean Circulation and Wave Studies, Institute of Oceanology, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Wang, Jianfeng,MacDonald, Daniel G.,Orton, Philip M.,et al. The Effect of Discharge, Tides, and Wind on Lift-Off Turbulence[J]. ESTUARIES AND COASTS,2015,38(6):2117-2131.
APA Wang, Jianfeng,MacDonald, Daniel G.,Orton, Philip M.,Cole, Kelly,&Lan, Jian.(2015).The Effect of Discharge, Tides, and Wind on Lift-Off Turbulence.ESTUARIES AND COASTS,38(6),2117-2131.
MLA Wang, Jianfeng,et al."The Effect of Discharge, Tides, and Wind on Lift-Off Turbulence".ESTUARIES AND COASTS 38.6(2015):2117-2131.
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