DOI: 10.1029/2018JC013785
Scopus记录号: 2-s2.0-85051204350
论文题名: Airborne Remote Sensing of Wave Propagation in the Marginal Ice Zone
作者: Sutherland P. ; Brozena J. ; Rogers W.E. ; Doble M. ; Wadhams P.
刊名: Journal of Geophysical Research: Oceans
ISSN: 21699275
出版年: 2018
卷: 123, 期: 6 起始页码: 4132
结束页码: 4152
语种: 英语
英文关键词: air-sea-ice
; airborne scanning lidar
; marginal ice zone
; surface waves
; wave attenuation
; wave growth rate
英文摘要: Airborne scanning lidar was used to measure the evolution of the surface wave field in the marginal ice zone (MIZ) during two separate wave events in the Beaufort Sea in October 2015. The lidar data consisted of a 2-D field of surface elevation with horizontal resolutions between 17 and 33 cm, over a swath approximately 150-220 m wide, centred on the ground track of the aircraft. Those data were used to compute directional wavenumber spectra of the surface wave field. Comparison with nearly collocated buoy data found the lidar and buoy measurements to be generally consistent. During the first event, waves traveling from open water into the ice were attenuated by the ice. The low spectral spreading and k7/4 spectral dependence of the attenuation was consistent with dissipative models that treat sea ice as a highly viscous fluid floating on a less viscous ocean. Upper-ocean eddy viscosities calculated using that model were found to be significantly lower than those from previous work. The second event was in off-ice winds and cold temperatures, allowing measurement of the wave fetch relation in ice-forming conditions. The wave growth rate was found to be slightly higher than previous measurements under unstable atmospheric conditions without ice formation. Comparison with WAVEWATCH III model output highlighted the importance of accurate ice information and fine geographic computational resolution when making predictions near the ice edge. Finally, the very short scales over which the wave field was observed to evolve in the MIZ are discussed. © 2018. American Geophysical Union. All Rights Reserved.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/113726
Appears in Collections: 气候减缓与适应
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作者单位: Laboratoire d'Océanographie Physique et Spatiale (LOPS), IFREMER, Plouzané, France; Naval Research Laboratory, Marine Geosciences Division, Washington, DC, United States; Naval Research Laboratory, Stennis Space CenterMS, United States; Polar Scientific, Ltd Appin, United Kingdom; Department of Applied Mathematics and Theoretical Physics, University of Cambridge, Cambridge, United Kingdom
Recommended Citation:
Sutherland P.,Brozena J.,Rogers W.E.,et al. Airborne Remote Sensing of Wave Propagation in the Marginal Ice Zone[J]. Journal of Geophysical Research: Oceans,2018-01-01,123(6)