Near-bottom currents at Station M in the abyssal Northeast Pacific

Connolly, Thomas P.; McGill, Paul; Henthorn, R.; Burrier, Drew A.; Michaud, Cynthia

doi:10.1016/j.dsr2.2020.104743

Cited by 8 publications

(4 citation statements)

References 28 publications

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“…For example, reversal currents are observed in the Kane Gap connecting deep basins in the Equatorial Atlantic 9 . Similar variability at synoptic time scales is found in the abyssal layer of the Northeast Pacific 11 and Southwest Indian Ocean 40 . Repeated moorings deployed in the Vema Channel since 1979 28 do not show significant long-term trends in the abyssal velocity.…”

Section: Discussionsupporting

confidence: 70%

Sea level anomalies affect the ocean circulation at abyssal depths

Frey,

Morozov,

Smirnova

2023

Sci Rep

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Abyssal channels are the key points controlling bottom circulation of the World Ocean. They provide meridional transport of the coldest Antarctic Bottom Water between deep-water basins influencing the meridional overturning circulation and the climate on a global scale. Here we show that the synoptic variability of deep-water flows including blocking abyssal currents between deep ocean basins is related to sea level anomalies observed over the channels. Our results demonstrate that processes at the ocean surface have a more significant connection with the bottom circulation than it was considered earlier. This study opens a discussion of the importance of mesoscale eddies and air-sea interactions on water exchange between abyssal basins, meridional heat transport in the ocean, and possible responses of the ocean to the observed sea level rise in a changing climate.

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Section: Discussionsupporting

confidence: 70%

Sea level anomalies affect the ocean circulation at abyssal depths

Frey,

Morozov,

Smirnova

2023

Sci Rep

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“…Current direction was highly variable with the prevailing current toward the second and third quadrants, with mean current direction ranging from 74.1 ± 19.3° in 2012 to 303.1 ± 63.3° in 2017. The bottom currents at Station M varied significantly between years ( 22 ).…”

Section: Resultsmentioning

confidence: 99%

Abyssal Benthic Rover, an autonomous vehicle for long-term monitoring of deep-ocean processes

et al. 2021

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“…Yuan et al, 2002;Xiao et al, 2016). However, NIWs are widely observed in other deep ocean (Connolly et al, 2020;Watanabe & Hibiya, 2018). During the observational period, two typhoons passed through the northern SCS and induced two energetic bursts that reached a depth of ∼4,000 m (Figure 8c).…”

Section: Dominant Periodsmentioning

confidence: 97%

Structure and Variability of Abyssal Current in Northern South China Sea Based on CPIES Observations

et al. 2021

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The South China Sea (SCS) is a semi-enclosed marginal sea with an area of approximately 3.5 × 10 6 km 2 and an average depth of over 2,000 m. The only deep channel connecting the SCS to the surrounding oceans is the Luzon Strait, whose largest sill depth is approximately 2,400 m. Although the SCS is an isolated basin below 2,400 m, water in the deep SCS exhibits characteristics similar to those of water in the North Pacific at approximately 2,000 m, which is a result of deep-water intrusion through the Luzon Strait (Qu, 2002). Approximately 0.78-2.50 Sv (1 Sv = 1 × 10 6 m 3 /s) of cold and saline deep-water penetrates the SCS from the North Pacific because of the persistent pressure gradient (

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Near-bottom currents at Station M in the abyssal Northeast Pacific

Cited by 8 publications

References 28 publications

Sea level anomalies affect the ocean circulation at abyssal depths

Sea level anomalies affect the ocean circulation at abyssal depths

Abyssal Benthic Rover, an autonomous vehicle for long-term monitoring of deep-ocean processes

Structure and Variability of Abyssal Current in Northern South China Sea Based on CPIES Observations

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