DOI: 10.1002/2017JC013003
Scopus记录号: 2-s2.0-85043386954
论文题名: Pancake Ice Thickness Mapping in the Beaufort Sea From Wave Dispersion Observed in SAR Imagery
作者: Wadhams P. ; Aulicino G. ; Parmiggiani F. ; Persson P.O.G. ; Holt B.
刊名: Journal of Geophysical Research: Oceans
ISSN: 21699275
出版年: 2018
卷: 123, 期: 3 起始页码: 2213
结束页码: 2237
语种: 英语
英文关键词: Beaufort Sea
; COSMO-SkyMed
; pancake ice
; SAR imagery
; wave dispersion in sea ice
Scopus关键词: COSMO-SkyMed
; ice field
; ice thickness
; imagery
; mapping method
; satellite imagery
; sea ice
; Sentinel
; synthetic aperture radar
; viscosity
; wave dispersion
; wave propagation
; Arctic Ocean
; Beaufort Sea
英文摘要: The early autumn voyage of RV Sikuliaq to the southern Beaufort Sea in 2015 offered very favorable opportunities for observing the properties and thicknesses of frazil-pancake ice types. The operational region was overlaid by a dense network of retrieved satellite imagery, including synthetic aperture radar (SAR) imagery from Sentinel-1 and COSMO-SkyMed (CSK). This enabled us to fully test and apply the SAR-waves technique, first developed by Wadhams and Holt (1991), for deriving the thickness of frazil-pancake icefields from changed wave dispersion. A line of subimages from a main SAR image (usually CSK) is analyzed running into the ice along the main wave direction. Each subimage is spectrally analyzed to yield a wave number spectrum, and the change in the shape of the spectrum between open water and ice, or between two thicknesses of ice, is interpreted in terms of the viscous equations governing wave propagation in frazil-pancake ice. For each of the case studies considered here, there was good or acceptable agreement on thickness between the extensive in situ observations and the SAR-wave calculation. In addition, the SAR-wave analysis gave, parametrically, effective viscosities for the ice covering a consistent and narrow range of 0.03–0.05 m2 s−1. © 2018. American Geophysical Union. All Rights Reserved. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/114388
Appears in Collections: 气候减缓与适应
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作者单位: Cambridge Polar Consultants Ltd., Cambridge, United Kingdom; Università Politecnica delle Marche, Ancona, Italy; ISAC-CNR, Bologna, Italy; University of Colorado at Boulder, Boulder, CO, United States; Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, United States
Recommended Citation:
Wadhams P.,Aulicino G.,Parmiggiani F.,et al. Pancake Ice Thickness Mapping in the Beaufort Sea From Wave Dispersion Observed in SAR Imagery[J]. Journal of Geophysical Research: Oceans,2018-01-01,123(3)