Archive image from page 778 of The depths of the ocean;. The depths of the ocean; a general account of the modern science of oceanography based largely on the scientific researches of the Norwegian steamer Michael Sars in the North Atlantic depthsofoceange00murr Year: 1912 GENERAL BIOLOGY 73 These figures show a minimum below 100 metres, and a maximum between 500 and 1000 metres. Comparing this with the curves for specific gravity at these two stations (Figs. 516 and 517), we notice a pronounced rise in specific gravity in the upper 100 metres (the plant region), followed by a very slow rise
Archive image from page 778 of The depths of the ocean;. The depths of the ocean; a general account of the modern science of oceanography based largely on the scientific researches of the Norwegian steamer Michael Sars in the North Atlantic depthsofoceange00murr Year: 1912 GENERAL BIOLOGY 73 These figures show a minimum below 100 metres, and a maximum between 500 and 1000 metres. Comparing this with the curves for specific gravity at these two stations (Figs. 516 and 517), we notice a pronounced rise in specific gravity in the upper 100 metres (the plant region), followed by a very slow rise and then a rapid rise towards 1000 metres, beyond which the specific gravity becomes very uniform. The temperature, which greatly influences the viscosity, falls gradually, correspond- ing to the rise in specific gravity, and in consequence the viscosity increases towards deep water. 2000 Fig. 517.—Curves of Temperature (/°) and Specific Gravity (<xt), Station 50. (South of the Azores.) Off the banks of Newfoundland we took the following series at Station 80 : 235 to o metres gave 5 containing 16 species of Crustaceans. 525 to 235 „ 45 „ 27 950 to 525 „ 28 „ 34 The curve of specific gravity here (see Fig. 518) is essentially different from those in the Sargasso Sea, for a rapid rise occurs down to about 500 metres, beyond which the specific gravity becomes practically uniform, and at this station no minimum quantity of organisms is noticeable between 500 and 200 metres, but on the contrary a considerable rise.
Size: 1375px × 1455px
Photo credit: © Actep Burstov / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: 1900, 1910, 1912, archive, book, bookauthor, bookcentury, bookdecade, bookpublisher, booksubject, bookyear, drawing, historical, history, illustration, image, london_macmillan, murray_john_sir_1841_1914, oceanography, page, picture, print, reference, vintage
