Suspended Matter in Deep Ocean Water

Ewing, Maurice; Thorndike, Edward M.

doi:10.1126/science.147.3663.1291

Cited by 145 publications

(31 citation statements)

References 4 publications

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“…Others have proposed that it is a sedimentary drift constructed of sediment transported along the sea floor by bottom currents (Heezen and Hollister, 1964;Ewing and Thorndike, 1965;Markl et al, 1970). The source of the sediment making up the ridge has also been a controversial subject.…”

Section: Blake-bahama Outer Ridgementioning

confidence: 99%

Regional Aspects of Deep Sea Drilling in the Western North Atlantic

Ewing¹,

Hollister²

1972

Initial Reports of the Deep Sea Drilling Project

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Section: Blake-bahama Outer Ridgementioning

confidence: 99%

Regional Aspects of Deep Sea Drilling in the Western North Atlantic

Ewing¹,

Hollister²

1972

Initial Reports of the Deep Sea Drilling Project

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“…The distribution of suspended sediment in the deep water of the western North Atlantic Ocean has been extensively studied by measurement of light scattering with deep-sea nephelometers [Ewing and Thorndike, 1965;Eittreim eta/., 1969;Eittreim and Ewing, 1972]. These studies indicate that a nearbottom nepheloid layer persists over most of the basin and is particularly intense along the western margin, where the southward-flowing western boundary undercurrent is active.…”

mentioning

confidence: 99%

The western boundary undercurrent as a turbidity maximum over the Puerto Rico Trench

Tucholke¹,

Eittreim²

1974

J. Geophys. Res.

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Nephelometer measurements in the Puerto Rico trench record a midwater light scattering maximum at the depth of the near‐bottom nepheloid layer found in the deep Atlantic basin to the northwest. This midwater maximum is best developed near the south slope of the trench and is interpreted as a southeasterly continuation of the western boundary undercurrent, which has been documented along the continental rise of eastern North America. The eastward‐advecting core of the flow overrides clearer colder antarctic bottom water that enters the trench from the east. A near‐bottom nepheloid layer, best developed in the eastern part of the trench, appears to be associated with the westward‐flowing antarctic bottom current.

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“…This layer is maintained by resuspension of surficial sediments at the sediment-water interface (Lampitt 19 8 5;Walsh et al 1988) and by material sinking from above being temporarily entrained in near-bottom turbulence. The turbulent benthic boundary layer (BBL) and its associated bottom nepheloid layer may extend upward several tens of meters (Ewing and Thorndike 1965;Armi and Millard 1976;Eittreim et al 1976;Hollister et al 1976). Thus a potential food source of enhanced abundance exists for detritivorous benthopelagic zooplankton.…”

mentioning

confidence: 99%

Benthopelagic biomass distribution and oxygen consumption in a deep‐sea benthic boundary layer dominated by gelatinous organisms

Childress¹,

Gluck²,

Carney³

et al. 1989

Limnology & Oceanography

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A quantitative plankton net sampler with a multicompartment cod-end for use with deep submersible vehicles was developed. This cod-end protects samples from surface temperatures so that deep-sea animals can be recovered alive. The DSV Alvin used it to sample the benthopelagic faunas forms, a group dominated by copepods and larger crustaceans, were more uniformly distributed and ranged from 2.1 to 7.9 mg wet wt m-3. Abundances of Scotoanassa sp., but not the other categories, varied greatly between years and between basins. Scotoanassa sp. had a low oxygen consumption rate of 0.0009 ~1 O2 (mg wet wt)-' h-l; the near-bottom crustaceans had rates similar to those of bathypelagic crustaceans. Total metabolism of the sampled groups was dominated by Scotoanassa sp. and nongelatinous plankton near the bottom with other gelatinous plankton becoming dominant higher. Scotoanassa sp. may be a rapid growing, opportunistic species that can respond reproductively to short-term environmental changes.

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Suspended Matter in Deep Ocean Water

Cited by 145 publications

References 4 publications

Regional Aspects of Deep Sea Drilling in the Western North Atlantic

Regional Aspects of Deep Sea Drilling in the Western North Atlantic

The western boundary undercurrent as a turbidity maximum over the Puerto Rico Trench

Benthopelagic biomass distribution and oxygen consumption in a deep‐sea benthic boundary layer dominated by gelatinous organisms

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