A Gaussian-surface-based approach to identifying oceanic multi-eddy structures from satellite altimeter datasets
- Resource Type
- Conference
- Authors
- Yi, Jiawei; Liu, Zhang; Du, Yunyan; Wu, Di; Zhou, Chenghu; Wei, Haitao; Xu, Kaihui; Liang, Fuyuan
- Source
- 2014 22nd International Conference on Geoinformatics Geoinformatics (GeoInformatics), 2014 22nd International Conference on. :1-5 Jun, 2014
- Subject
- Computing and Processing
Geoscience
Signal Processing and Analysis
Transportation
automated identification algorithm
ocean eddies
multi-eddy structure
- Language
- ISSN
- 2161-024X
2161-0258
This study presents a Gaussian-surface-based approach to identifying multi-eddy structures from the sea level anomaly (SLA) maps. The SLA signals of an eddy are modeled by a two-dimensional anisotropic Gaussian surface. An identification criterion is introduced to determine whether to retain or split a multi-eddy structure. Detection result of a three-eddy structure from the SLA in the South China Sea (SCS) demonstrates the effectiveness of the identification approach. Comparison with a merger event previously reported about a multi-eddy structure in northern SCS reveals the advantage of this approach over simple splitting strategy, which may lose the eddy-eddy interaction details conveyed by real multi-eddy structures.