A Census of Eddies in the Tropical Eastern Boundary of the Indian Ocean

M. F. Azis Ismail; J. Ribbe; T. Arifin; A. Taofiqurohman; D. Anggoro

doi:10.1029/2021JC017204

A Census of Eddies in the Tropical Eastern Boundary of the Indian Ocean

M. F. Azis Ismail^*, J. Ribbe, T. Arifin, A. Taofiqurohman, D. Anggoro

^*Corresponding author for this work

Laboratory of Instrumentation

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12 Citations (Scopus)

Abstract

The Indo-Australian Basin (IAB) constitutes a crucial water route for the global ocean's circulation between the Pacific and Indian Oceans. Locally generated eddies contribute to the continued westward transport of water away from the IAB. In this paper, results from the first comprehensive regional ocean eddy census are discussed. A hybrid eddy census and tracking algorithm is used to analyze satellite altimetry data from 1993 to 2018. A total of 2,792 eddies were identified and tracked. Cyclonic eddies and anticyclonic eddies exhibit geographical segregation in terms of their dynamic characteristics. Larger amplitudes, radii, and absolute vorticities are associated with high eddy kinetic energy regions located in the vicinity of the South Java Current, South Equatorial Current, and Indonesian Throughflow. The eddies are grouped into three duration-based classifications providing the first systematic insight into understanding their physical characteristics, formation, and distribution in the IAB.

Original language	English
Article number	e2021JC017204
Journal	Journal of Geophysical Research: Oceans
Volume	126
Issue number	6
DOIs	https://doi.org/10.1029/2021JC017204
Publication status	Published - Jun 2021

Keywords

Indian Ocean
Indo-Australian Basin
altimetry
census
eddies

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10.1029/2021JC017204

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abstract = "The Indo-Australian Basin (IAB) constitutes a crucial water route for the global ocean's circulation between the Pacific and Indian Oceans. Locally generated eddies contribute to the continued westward transport of water away from the IAB. In this paper, results from the first comprehensive regional ocean eddy census are discussed. A hybrid eddy census and tracking algorithm is used to analyze satellite altimetry data from 1993 to 2018. A total of 2,792 eddies were identified and tracked. Cyclonic eddies and anticyclonic eddies exhibit geographical segregation in terms of their dynamic characteristics. Larger amplitudes, radii, and absolute vorticities are associated with high eddy kinetic energy regions located in the vicinity of the South Java Current, South Equatorial Current, and Indonesian Throughflow. The eddies are grouped into three duration-based classifications providing the first systematic insight into understanding their physical characteristics, formation, and distribution in the IAB.",

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AU - Ribbe, J.

AU - Arifin, T.

AU - Taofiqurohman, A.

AU - Anggoro, D.

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AB - The Indo-Australian Basin (IAB) constitutes a crucial water route for the global ocean's circulation between the Pacific and Indian Oceans. Locally generated eddies contribute to the continued westward transport of water away from the IAB. In this paper, results from the first comprehensive regional ocean eddy census are discussed. A hybrid eddy census and tracking algorithm is used to analyze satellite altimetry data from 1993 to 2018. A total of 2,792 eddies were identified and tracked. Cyclonic eddies and anticyclonic eddies exhibit geographical segregation in terms of their dynamic characteristics. Larger amplitudes, radii, and absolute vorticities are associated with high eddy kinetic energy regions located in the vicinity of the South Java Current, South Equatorial Current, and Indonesian Throughflow. The eddies are grouped into three duration-based classifications providing the first systematic insight into understanding their physical characteristics, formation, and distribution in the IAB.

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KW - Indo-Australian Basin

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KW - census

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A Census of Eddies in the Tropical Eastern Boundary of the Indian Ocean

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Keywords

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