The Effect of a Storm on an Inshore Area with Markedly Stratified Waters

Coincident with the formation and subsequent movement of a North Atlantic cyclone following the characteristic track, offshore surface waters are forced to the south coast of Nova Scotia with consequent removal of intermediate and bottom waters. Wind action, as the storm approaches, intensifies the mixing of the waters. Markedly stratified waters are thus temporarily replaced by a body of thoroughly mixed water.

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Atlantic Cod Populations along the Southern Canadian Mainland as shown by Vertebral Count Studies

Journal of the Fisheries Research Board of Canada ◽

10.1139/f55-037 ◽

1955 ◽

Vol 12 (5) ◽

pp. 698-705 ◽

Cited By ~ 6

Author(s):

R. A. McKenzie ◽

G. F. M. Smith

Keyword(s):

Nova Scotia ◽

Atlantic Cod ◽

South Coast ◽

The South ◽

Vertebral Number ◽

Vertebral Count ◽

Seasonal Migrations

Analysis of vertebral counts of 28,097 cod (Gadus callarias L.) in 184 samples from the Canadian mainland coast demonstrates some segregation of inshore and offshore populations and little mixing between the cod on various sections of the coast. Four populations are recognized in the Gulf of St. Lawrence. Three offshore populations and at least four inshore populations are also recognized along the south coast of Nova Scotia. Seasonal migrations northward in summer and southward in winter are indicated by changes in vertebral numbers. Small cod (less than 21/2 lb.) exhibit less variability in vertebral number than larger ones, suggesting increased mixing with growth.

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Major Change in Atlantic Deep and Bottom Waters 700,000 yr Ago: Benthonic Foraminiferal Evidence from the South Atlantic

Quaternary Research ◽

10.1016/0033-5894(82)90043-6 ◽

1982 ◽

Vol 17 (1) ◽

pp. 26-38 ◽

Cited By ~ 23

Author(s):

L. C. Peterson ◽

G. P. Lohmann

Keyword(s):

North Atlantic ◽

Deep Water ◽

Bottom Water ◽

Sediment Cores ◽

North Atlantic Deep Water ◽

South Atlantic ◽

Antarctic Bottom Water ◽

The South ◽

Circumpolar Deep Water ◽

Bottom Waters

AbstractIn the modern South Atlantic the transition between deep water and bottom water is marked by a clear change in the associated benthonic foraminiferal fauna. Uvigerina and Globocassidulina characterize oxygen-poor Circumpolar Deep Water which has long been isolated from the surface. Planulina and miliolids are found associated with the more newly formed, oxygen-rich North Atlantic Deep Water. Antarctic Bottom Water is characterized by “Epistominella” umbonifera. Analysis of the benthonic foraminiferal faunas in two sediment cores recovered from the Vema and Hunter Channels in the western South Atlantic shows that the level of the transition between deep and bottom waters shallowed sharply about 700,000 yr ago. This rise indicates a sharp, sustained increase in the volume of bottom water flowing through the South Atlantic after this time. Prior to about 700,000 yr ago, the amount of Antarctic Bottom Water entering the western South Atlantic was greatly reduced and Circumpolar Deep Water apparently accounted for the bulk of northward flow. Production of southward-flowing North Atlantic Deep Water seems not to have been affected. The timing of this change in circulation regime suggests a possible causal link to similar changes in records of terrestrial and sea-surface climate.

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The Pottery Figurines of Pre-Columbian Peru: Volume III: The Figurines of the South Coast the Highlands and the Selva

10.30861/9781407310459 ◽

2012 ◽

Author(s):

Alexandra Morgan

Keyword(s):

South Coast ◽

The South

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Observed seasonal regimes of North-South Atlantic Ocean interbasin exchange

10.31223/osf.io/ykm29 ◽

2019 ◽

Author(s):

Hamed D. Ibrahim

Keyword(s):

North Atlantic ◽

Climate Models ◽

South Atlantic ◽

Meridional Overturning Circulation ◽

Volume Flux ◽

The South ◽

The North ◽

Basin Scale ◽

Interbasin Exchange ◽

North And South

North and South Atlantic lateral volume exchange is a key component of the Atlantic Meridional Overturning Circulation (AMOC) embedded in Earth’s climate. Northward AMOC heat transport within this exchange mitigates the large heat loss to the atmosphere in the northern North Atlantic. Because of inadequate climate data, observational basin-scale studies of net interbasin exchange between the North and South Atlantic have been limited. Here ten independent climate datasets, five satellite-derived and five analyses, are synthesized to show that North and South Atlantic climatological net lateral volume exchange is partitioned into two seasonal regimes. From late-May to late-November, net lateral volume flux is from the North to the South Atlantic; whereas from late-November to late-May, net lateral volume flux is from the South to the North Atlantic. This climatological characterization offers a framework for assessing seasonal variations in these basins and provides a constraint for climate models that simulate AMOC dynamics.

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