The Effect of Mesoscale Eddy on the Characteristic of Sound Propagation

Liu, Jiaqi; Piao, Shilong; Gong, Lijia; Zhang, Minghui; Guo, Yun; Zhang, Shizhao

doi:10.3390/jmse9080787

Cited by 19 publications

(15 citation statements)

References 25 publications

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“…On the other hand, solving the inverse problem, we can make hydroacoustics serve as a tool for studying various sea processes. For example, in paper [7], a mesoscale vortex in the Pacific Ocean and its dynamics are studied using hydroacoustic and oceanic methods.…”

Section: Some Results Of the Sea Fluctuation Researchmentioning

confidence: 99%

Sea Level Fluctuations

Долгих

2022

JMSE

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Section: Some Results Of the Sea Fluctuation Researchmentioning

confidence: 99%

Sea Level Fluctuations

Долгих

2022

JMSE

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“…Some studies have investigated Eddy's characteristics, such as shear velocities [9], an upwelling and downwelling process [10], and rotation [11]. Ocean eddies formation is generally induced by the shear velocity difference of the major ocean currents [9].…”

Section: Introductionmentioning

confidence: 99%

Identification of eddy-induced chlorophyll in the Northeastern Natuna Sea

Mujiasih

Soeyanto²,

Hafizt³

2023

IOP Conf. Ser.: Earth Environ. Sci.

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We detected a robust cyclonic eddy in the northeastern Natuna Island in the Northwest Monsoon during an extremely negative El Niño-Southern Oscillation (ENSO) period (i.e., extreme La Niña event) using the Copernicus Marine Environment Monitoring Service (CMEMS) reanalysis results. In the intense La Niña event from 1999 to 2001, we also found an increase in the abundance of chlorophyll coincided with the eddy strength pattern using the Sea-viewing Wide Field-of-view Sensor (SeaWiFS) data. Furthermore, this chlorophyll intensity may be related to the upwelling of water mass to the surface at the eddy’s center. The intensification of chlorophyll compared to the average value at the corresponding year is 83,4% (1999), 37.8% (2000), 37.3% (2008), and 72.5% (2011). In this paper, we revisit the identification of solid eddies in extreme La Niña events from 1999 to 2012 and further discuss the mechanism of the relationship between chlorophyll intensity and eddy strength, especially during the months of the extreme La Niña event.

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“…The impact of the eddy on the coupling coefficient of different orders of normal modes was subsequently studied by Liu et al. (2021) with a cyclonic eddy detected in the western North Pacific. The acoustic propagation experiment is an effective way to study the eddy‐acoustic effect.…”

Section: Introductionmentioning

confidence: 99%

“…In addition, Chen et al (2019) studied the effects of eddies on the surface duct energy leakage phenomenon with numerical simulation, and the results were verified with acoustic data measured in the South China Sea. The impact of the eddy on the coupling coefficient of different orders of normal modes was subsequently studied by Liu et al (2021) with a cyclonic eddy detected in the western North Pacific. The acoustic propagation experiment is an effective way to study the eddy-acoustic effect.…”

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confidence: 99%

Parametric Model for Eddies‐Induced Sound Speed Anomaly in Five Active Mesoscale Eddy Regions

Chen

Zhang

et al. 2022

JGR Oceans

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Mesoscale eddies are ubiquitous in the world's oceans. They are rotated with a 10-100 km length scale. The relatively isolated water mass trapped with mesoscale eddies can propagate a long distance while maintaining the source thermohaline characteristics. Thus, there are significant differences in the thermohaline structures between the inside and outside eddies, which have profound effects on underwater acoustic propagation.The earliest studies on the impact of eddies on sound propagation were conducted by Vastano and Owens (1973) and Weinberg and Zabalgogeazcoa (1977) based on hydrological field data measured from a cyclonic Gulf Stream (GS) ring detected in 1967. Vastano and Owens (1973) first observed the significant acoustic field perturbation caused by the cyclonic ring in the relatively uniform acoustic environment of the Sargasso Sea and found a strong dispersion phenomenon of the ray path in the area where the sound channel depth changed with the ray computations. In the following year, Gemmill studied the eddy's effects on the convergence mode of sound propagation and revealed that the cold eddy destroys the cyclic distribution of the convergence zones and refracts the sound rays into the deep sound channel. Subsequently, the eddy effects on ray travel time, which reflects the sound arrival structure, were studied with a range-dependent model presented by Weinberg and Zabalgogeazcoa (1977). Although the above studies are valuable, the corresponding sensitivity investigations of sound propagation on the eddy property variation cannot be conducted because of the rarity of eddy field data. To address this problem, Henrick et al. (1977) established a parametric eddy model qualitatively validated by GS ring observation data. Through the model, the effects of eddy intensity, geometric size and peak rotation speed on sound transmission are studied. Due to the good performance of such a model in describing eddy sound

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The Effect of Mesoscale Eddy on the Characteristic of Sound Propagation

Cited by 19 publications

References 25 publications

Sea Level Fluctuations

Sea Level Fluctuations

Identification of eddy-induced chlorophyll in the Northeastern Natuna Sea

Parametric Model for Eddies‐Induced Sound Speed Anomaly in Five Active Mesoscale Eddy Regions

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