2026-03-23 中国科学院（CAS）
Map of the study area. The black frame indicates the coverage of the Sentinel-1 SAR image acquired at 07:29:11 UTC on 2021 August 25. The red frame delineates the ROI containing the ice-edge eddy. (Image by AIRCAS)
＜関連情報＞
- https://english.cas.cn/newsroom/research-news/202603/t20260327_1154048.shtml
- https://spj.science.org/doi/10.34133/remotesensing.1031
連続SAR画像に基づくフラム海峡の氷縁渦の時空間変動解析 Spatiotemporal Variation Analysis of Ice-Edge Eddies in the Fram Strait Based on Sequential SAR Images
Xue Yang, Yawei Zhao, Yongsheng Xu, and Jinsong Chong
Journal of Remote Sensing Published:2 Mar 2026
DOI:https://doi.org/10.34133/remotesensing.1031
Abstract
The spatiotemporal dynamics of eddy formation, movement, and decay in marginal ice zones are pivotal to understanding oceanographic processes. While existing studies largely focus on identifying eddy locations and quantifying their distribution using synthetic aperture radar (SAR) images, there is limited research on the spatiotemporal variations of ice-edge eddies. This study examines an ice-edge eddy with a lifespan of approximately 22 d in the Fram Strait’s marginal ice zone using sequential SAR imagery. To analyze the eddy’s development and evolution throughout its lifecycle, we propose a dynamical parameter inversion method for ice-edge eddies based on time-series SAR data, which includes retrieving the horizontal current field through sea ice motion tracking and applying a hydrodynamic model to compute the eddy’s dynamical parameters. This method enables a detailed analysis of the spatiotemporal variations in the eddy’s structure and intensity throughout its lifecycle. The results provide novel insights into the lifecycle characteristics of ice-edge eddies and their environmental interactions.
