Determining azimuthal variations in frontal Froude number from SAR imagery
Publication in refereed journal


引用次數
替代計量分析
.

其它資訊
摘要River plume fronts are the locus of strong mixing between plume and ambient coastal waters, contribute to coastal productivity, and exert a major impact on coastal ecosystems. The frontal Froude number Fr is an important parameter characterizing the frontal status with respect to both propagation and vertical mixing. In this study, we examine azimuthal variations in Fr using a new remote sensing method. We derive Fr from SAR image data on the basis of the SAR imaging theory and the mechanism of internal wave fission at front. This method is applied to a SAR image showing a front off the Columbia River (CR) mouth taken on 31 May 2003 at 14: 33: 19 UTC under weak wind conditions. Fr increases from south to north along the front. This variation is consistent with potential vorticity conservation and the influence of tidal currents on the plume. This calculation confirms arguments based on vessel observations by Jay et al. (2009). Citation: Pan, J., D. A. Jay, and H. Lin (2009), Determining azimuthal variations in frontal Froude number from SAR imagery, Geophys. Res. Lett., 36, L15601, doi: 10.1029/2009GL039068.
著者Pan JY, Jay DA, Lin H
期刊名稱Geophysical Research Letters
出版年份2009
月份8
日期1
卷號36
出版社American Geophysical Union (AGU)
國際標準期刊號0094-8276
電子國際標準期刊號1944-8007
語言英式英語
Web of Science 學科類別Geology; Geosciences, Multidisciplinary; GEOSCIENCES, MULTIDISCIPLINARY

上次更新時間 2020-28-10 於 01:07