DOI: 10.1002/2014GL062940
论文题名: Estimates of ocean wave heights and attenuation in sea ice using the SAR wave mode on Sentinel-1A
作者: Ardhuin F. ; Collard F. ; Chapron B. ; Girard-Ardhuin F. ; Guitton G. ; Mouche A. ; Stopa J.E.
刊名: Geophysical Research Letters
ISSN: 0094-8817
EISSN: 1944-8548
出版年: 2015
卷: 42, 期: 7 起始页码: 2317
结束页码: 2325
语种: 英语
英文关键词: ocean waves
; SAR
; sea ice
Scopus关键词: Oceanography
; Orbits
; Sea ice
; Synthetic aperture radar
; Water waves
; Azimuth direction
; Exponential attenuation
; Length scale
; Open ocean
; Orbital velocities
; SAR
; SAR processing
; Wave heights
; Ice
; azimuth
; estimation method
; ocean wave
; open ocean
; oscillation
; sea ice
; swell
; synthetic aperture radar
; wave height
; wave modeling
; wave scattering
英文摘要: Swell evolution from the open ocean into sea ice is poorly understood, in particular the amplitude attenuation expected from scattering and dissipation. New synthetic aperture radar (SAR) data from Sentinel-1A wave mode reveal intriguing patterns of bright oscillating lines shaped like instant noodles. We investigate cases in which the oscillations are in the azimuth direction, around a straight line in the range direction. This observation is interpreted as the distortion by the SAR processing of crests from a first swell, due to the presence of a second swell. Since deviations from a straight line should be proportional to the orbital velocity toward the satellite, swell height can be estimated, from 1.5 to 5 m in the present case. The evolution of this 13 s period swell across the ice pack is consistent with an exponential attenuation on a length scale of 200 km. ©2015. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84928703403&doi=10.1002%2f2014GL062940&partnerID=40&md5=e24822503efe60fdd1e2cebb8973c3f9
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/8433
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: Ifremer, Laboratoire d'Océanographie Spatiale, Brest, France
Recommended Citation:
Ardhuin F.,Collard F.,Chapron B.,et al. Estimates of ocean wave heights and attenuation in sea ice using the SAR wave mode on Sentinel-1A[J]. Geophysical Research Letters,2015-01-01,42(7).