DOI: 10.1002/2014GL062421
论文题名: Extremely long Kelvin-Helmholtz billow trains in the Romanche Fracture Zone
作者: Van Haren H. ; Gostiaux L. ; Morozov E. ; Tarakanov R.
刊名: Geophysical Research Letters
ISSN: 0094-9531
EISSN: 1944-9262
出版年: 2014
卷: 41, 期: 23 起始页码: 8445
结束页码: 8451
语种: 英语
英文关键词: Kelvin-Helmholtz billows
; mixing Antarctic Bottom Water
; Romanche Fracture Zone
Scopus关键词: Fracture
; Mixing
; Tides
; Antarctic Bottom Water
; Fracture zone
; High resolution
; Kelvin-Helmholtz billows
; Mid Atlantic Ridge
; Overlying water
; Steady shear flow
; Turbulent mixing
; Shear flow
; fracture zone
; ocean basin
; sensor
; shear flow
; water depth
; water mass
; Atlantic Ocean
英文摘要: In the Atlantic Ocean, the densest water mass Antarctic Bottom Water "AABW" can only cross the Mid-Atlantic Ridge from its southwestern to northeastern basins in limited, because deep, conduits. At the southwestern entrance of one of these, the equatorial Romanche Fracture Zone, AABW crosses a sill at 4550 m depth in a 7 km narrow channel before plunging into the deep. At the sill-slope, the rapidly flowing AABW causes shear-induced turbulent mixing with the overlying water masses. We present an excerpt of 1 Hz sampled, half-yearlong moored observations from 99 high-resolution temperature sensors that demonstrate and quantify the turbulence details. On top of quasi-steady shear flow, an internal tide modulates the mixing. Together, they constitute a means for an extremely long train of >250 consecutive Kelvin-Helmholtz billows in a day that vary between 5 and 100 m in vertical scale. © 2014. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84921567947&doi=10.1002%2f2014GL062421&partnerID=40&md5=07d67b8e59999e925169083ce0e912cf
Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/6795
Appears in Collections: 气候减缓与适应
There are no files associated with this item.
作者单位: NIOZ Royal Netherlands Institute for Sea Research, Den Burg, Netherlands
Recommended Citation:
Van Haren H.,Gostiaux L.,Morozov E.,et al. Extremely long Kelvin-Helmholtz billow trains in the Romanche Fracture Zone[J]. Geophysical Research Letters,2014-01-01,41(23).