DOI: 10.1002/2013GL058320
论文题名: An empirical investigation of nonlinear energy transfer from the M 2 internal tide to diurnal wave motions in the Kauai Channel, Hawaii
作者: Chou S.H. ; Luther D.S. ; Guiles M.D. ; Carter G.S. ; Decloedt T.
刊名: Geophysical Research Letters
ISSN: 0094-10422
EISSN: 1944-10153
出版年: 2014
卷: 41, 期: 2 起始页码: 502
结束页码: 512
语种: 英语
英文关键词: bispectra
; Hawaiian Ridge
; M2 Internal Tide
; M2 subharmonic
; nonlinear energy transfer
; parametric subharmonic instability
Scopus关键词: Energy transfer
; Tides
; Bispectra
; Hawaiian Ridge
; Internal tides
; Nonlinear energy transfer
; Subharmonic instability
; Subharmonics
; Shear flow
; empirical analysis
; energy flux
; internal tide
; nonlinearity
; numerical model
; tidal modeling
; wave modeling
; Hawaii [United States]
; Hawaiian Islands
; Kauai
; United States
英文摘要: Current profiles are examined for evidence of nonlinear energy transfers from the M2 internal tide to diurnal waves. The 6 month records, unlike shorter records, produce well-resolved velocity and shear spectra that consistently exhibit maxima at the diurnal tides O1 and K 1, with a minimum at the intermediate M2 subharmonic, M2/2. The ratio of velocity spectral energy at M2/2 and M2 is quantified, providing a needed modeling benchmark. Bispectra and bicoherences imply a negligible [-M2/2, -M2/2, -M 2] triad interaction, but possibly a significant interaction for the [-O1, -K1, -M2] triad. Numerical simulations, however, indicate that O1 and K1 signals are from internal tides. Tests with synthetic data, linear tides plus random noise, reveal that bispectrum and bicoherence estimators can yield significant values, thus misleading results. Therefore, resolving the diurnal tides from M2/2 is essential to meaningfully assess nonlinear transfer of energy from M 2 to diurnal waves. ©2013. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84892474794&doi=10.1002%2f2013GL058320&partnerID=40&md5=7a684e67014142fde44966ffc85bbf80
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/7686
Appears in Collections: 气候减缓与适应
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作者单位: Department of Oceanography, School of Ocean and Earth Science and Technology, University of Hawaii at Manoa, Honolulu, HI, United States
Recommended Citation:
Chou S.H.,Luther D.S.,Guiles M.D.,et al. An empirical investigation of nonlinear energy transfer from the M 2 internal tide to diurnal wave motions in the Kauai Channel, Hawaii[J]. Geophysical Research Letters,2014-01-01,41(2).