DOI: 10.1002/2014GL061897
论文题名: Upwelling rebound, ephemeral secondary pycnoclines, and the creation of a near-bottom wave guide over the Monterey Bay continental shelf
作者: Cheriton O.M. ; McPhee-Shaw E.E. ; Storlazzi C.D. ; Rosenberger K.J. ; Shaw W.J. ; Raanan B.Y.
刊名: Geophysical Research Letters
ISSN: 0094-9545
EISSN: 1944-9276
出版年: 2014
卷: 41, 期: 23 起始页码: 8503
结束页码: 8511
语种: 英语
英文关键词: continental shelf
; internal waves of elevation
; Monterey Bay
; near-bed pycnocline
; upwelling
Scopus关键词: Tides
; Continental shelves
; Internal waves
; Monterey Bay
; near-bed pycnocline
; upwelling
; Oceanography
; continental shelf
; energy flux
; infiltration
; internal wave
; pycnocline
; upwelling
; wave propagation
; California
; Monterey Bay
; United States
英文摘要: Several sequential upwelling events were observed in fall 2012, using measurements from the outer half of the continental shelf in Monterey Bay, during which the infiltration of dense water onto the shelf created a secondary, near-bottom pycnocline. This deep pycnocline existed in concert with the near-surface pycnocline and enabled the propagation of near-bottom, cold, semidiurnal internal tidal bores, as well as energetic, high-frequency, nonlinear internal waves of elevation (IWOE). The IWOE occurred within 20 m of the bottom, had amplitudes of 8-24 m, periods of 6-45 min, and depth-integrated energy fluxes up to 200 W m-1. Iribarren numbers (<0.03) indicate that these IWOE were nonbreaking in this region of the shelf. These observations further demonstrate how regional upwelling dynamics and the resulting bulk, cross-margin hydrography is a first-order control on the ability of internal waves, at tidal and higher frequencies, to propagate through continental shelf waters. © 2014. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84921511619&doi=10.1002%2f2014GL061897&partnerID=40&md5=59437327360de52fad8bc5cf65df566c
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/6809
Appears in Collections: 气候减缓与适应
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作者单位: Pacific Coastal and Marine Science Center, U.S. Geological Survey, Santa Cruz, CA, United States
Recommended Citation:
Cheriton O.M.,McPhee-Shaw E.E.,Storlazzi C.D.,et al. Upwelling rebound, ephemeral secondary pycnoclines, and the creation of a near-bottom wave guide over the Monterey Bay continental shelf[J]. Geophysical Research Letters,2014-01-01,41(23).