Archive image from page 310 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 PHYSICAL OCEANOGRAPHY 273 is still much to be done in this line. But the fluctuations of the ocean-currents are determined by more influences than tides, for many other forms of motion supervene, rendering the whole picture highly complicated. A careful analysis of the measure- ments made on Storeggen in 1906, led to the co
Archive image from page 310 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 PHYSICAL OCEANOGRAPHY 273 is still much to be done in this line. But the fluctuations of the ocean-currents are determined by more influences than tides, for many other forms of motion supervene, rendering the whole picture highly complicated. A careful analysis of the measure- ments made on Storeggen in 1906, led to the conclusion that there were certain regular variations which took the form of § u j &N fc -Z'. 3,35a. 771. JT am Fig. 183.—The Currents as determined by simultaneous measurements ( and ) at different depths at station 58. pulsations in the current. When the effect of the tide was Pulsations subtracted it appeared that the ordinary current at 10 metres in currents- ran for some time with considerable velocity (up to \ metre per second) ; then the velocity decreased during seven or eight hours until it approached zero, increasing again during the next seven to eight hours, and so on. The fluctuations had thus a period of about fifteen hours, but we are as yet ignorant of the particular cause, though it may be a usual phenomenon in the T
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