DOI: 10.1002/2016GL068219
论文题名: Generation and backreaction of spontaneously emitted inertia-gravity waves
作者: Sugimoto N. ; Plougonven R.
刊名: Geophysical Research Letters
ISSN: 0094-9161
EISSN: 1944-8892
出版年: 2016
卷: 43, 期: 7 起始页码: 3519
结束页码: 3525
语种: 英语
英文关键词: backreaction
; gravity waves
; ocean energy budget
; spontaneous emission
Scopus关键词: Budget control
; Kinetic energy
; Kinetics
; Spontaneous emission
; Back reaction
; Balanced motion
; Emission process
; Inertia gravity waves
; Long integrations
; Ocean energy
; Spontaneous generation
; Vertical velocity
; Gravity waves
英文摘要: Spontaneous generation of inertia-gravity waves from balanced flows is investigated in idealized simulations of dipoles. Long integrations are performed for dipoles with different Rossby numbers (Ro) to identify the backreaction of the waves. Emission of waves is detected only for large enough Ro (>0.15), and it then leads to a slow decay of the dipole's kinetic energy. A major finding is that this decay is well captured by the simulations, although positions of the waves appear still sensitive to the resolution, and their maximum vertical velocity increases linearly with resolution. The interpretation is that the emission process is well resolved and fairly insensitive to resolution, while the propagation and dissipation at small scales remains sensitive to resolution. The implication is that the simulations yield an estimate of the leakage of energy from balanced motions to gravity waves, providing a useful estimate of a poorly constrained flux in the ocean's energy budget. © 2016. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84962726607&doi=10.1002%2f2016GL068219&partnerID=40&md5=981880c2c4bf3bf11cb0ded407bd4b0a
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/10124
Appears in Collections: 科学计划与规划 气候变化与战略
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作者单位: Research and Education Center for Natural Sciences, Department of Physics, Keio University, Yokohama, Japan
Recommended Citation:
Sugimoto N.,Plougonven R.. Generation and backreaction of spontaneously emitted inertia-gravity waves[J]. Geophysical Research Letters,2016-01-01,43(7).