scholarly journals Phytoplankton and bacteria over the transient area of the continental slope of the Celtic Sea in spring. I. Vertical distribution and productivity

1992 ◽  
Vol 85 ◽  
pp. 289-301 ◽  
Author(s):  
V Martin-Jézéquel ◽  
C Videau
Keyword(s):  
Vertical Distribution ◽  
Continental Slope ◽  
Celtic Sea

scholarly journals Cascading Over the Continental Slope of Water from the Celtic Sea

1949 ◽  
Vol 28 (3) ◽  
pp. 719-750 ◽  
Author(s):  
L. H. N. Cooper ◽  
David Vaux
Keyword(s):  
Continental Shelf ◽  
Continental Slope ◽  
English Channel ◽  
The South ◽  
Celtic Sea

In the Celtic Sea, to the south of Ireland, water in some winters becomes sufficiently cooled and heavy to flow to the edge of the continental shelf and to run down the continental slope to a depth of several hundred metres. A theory of the phenomenon, termed ‘cascading’, has been developed. Three winters have been examined in detail.In February 1927 much water, heavy enough to cascade, was present in the Celtic Sea and also in the English Channel. A probable course and speed of the cascading water over the shelf has been established. Since there were few observations of salinity and temperature over or beyond the slope, and none of oxygen anywhere, the theory cannot be completely established on the basis of the 1927 observations, full though they were.

scholarly journals The physical and chemical oceanography of the waters bathing the continental slope of the Celtic Sea

1952 ◽  
Vol 30 (3) ◽  
pp. 465-510 ◽  
Author(s):  
L. H. N. Cooper
Keyword(s):  
Atlantic Ocean ◽  
Continental Slope ◽  
Life Histories ◽  
English Channel ◽  
South West ◽  
Chemical Oceanography ◽  
Celtic Sea ◽  
The Right ◽  
Physical And Chemical ◽  
Made In

Knowledge of the hydrography of the English Channel and Celtic Sea is needed as a background for the life histories of the mackerel, pilchard and herring and, indeed, of every organism living within range of the Plymouth Laboratory. Such knowledge can never be fully attained until we know more of the exchanges with the deep Atlantic Ocean which take place 200–300 miles to the south-west and west over the continental slope. Moreover, at the slope we shall need to know not only what waters move in and out but what move up and down. Long ago Storrow (1925), and no doubt others, saw clearly some of the problems here to be discussed, but they were unable to bring factual evidence to bear. A critical reconstruction of the considerable but fragmentary observations in the neighbourhood of the continental slope of the Celtic Sea will be presented here and supplemented by observations made in 1950 with the generous co-operation of the vessels of the National Institute of Oceanography (Discovery Committee) and in 1948 by H.M. Surveying Ship Dalrymple. Though many of the conclusions remain tentative, it should now be easier to design observational work at sea to test specific hypotheses at the right time and place by the methods of experimental oceanography. The numerical results in 1950 will be published by the Conseil International pour l'Exploration de la Mer.

scholarly journals The boar fish, Capros aper (L.), as a possible biological indicator of water movement

1952 ◽  
Vol 31 (2) ◽  
pp. 351-362 ◽  
Author(s):  
L. H. N. Cooper
Keyword(s):  
Continental Shelf ◽  
Continental Slope ◽  
Water Movement ◽  
Submarine Canyon ◽  
Biological Indicator ◽  
Westerly Winds ◽  
Celtic Sea

Notable catches of boar fish (Capros aper) were taken near the Eddystone on 30 October and in early November 1951. From what is known of the distribution of boar fish and from the hypothesis on the genesis of “submarine eagres” in canyons on the continental slope, a further hypothesis has been derived to explain this occurrence. It is suggested that strong west to south-westerly winds on 24 September created conditions to produce a submarine eagre the following day, and that this swept a shoal of boar fish from the yellow-coral encrusted walls of a submarine canyon in the southern edge of the Celtic Sea on to the continental shelf. Thence during quiet weather the shoal was carried by currents to the neighbourhood of the Eddystone at about 6 miles a day. Further deductions which lead to means of checking the present hypotheses have been drawn.

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