. o so 100 250 500 750 1000 23 964 48 2 115 33 8 64 4 â 4 11 1 7 1 â 2 â 47 (46) ' 2 â â 23(2) (28) 0) â â â â (11) 0) â â â 3 -" (42) (129) (31) (17) (45) (35) O SO -100 -250 SOO -750 -1000 O SO 100 250 500 750 1000 Fig. 11. Four-hourly vertical distribution of the Furcilia stages showing absence of rhythmic diurnal movement and more or less permanent massing of the main concentrations high up in the Antarctic surface layer. For further explanation see legend to Fig. 9. recorded, however (Fig. 10), there is little indication of any pronounced or rhythmic diurnal vertical movement and equ
. o so 100 250 500 750 1000 23 964 48 2 115 33 8 64 4 â 4 11 1 7 1 â 2 â 47 (46) ' 2 â â 23(2) (28) 0) â â â â (11) 0) â â â 3 -" (42) (129) (31) (17) (45) (35) O SO -100 -250 SOO -750 -1000 O SO 100 250 500 750 1000 Fig. 11. Four-hourly vertical distribution of the Furcilia stages showing absence of rhythmic diurnal movement and more or less permanent massing of the main concentrations high up in the Antarctic surface layer. For further explanation see legend to Fig. 9. recorded, however (Fig. 10), there is little indication of any pronounced or rhythmic diurnal vertical movement and equally little of any mass descent into the warm core of the deep water during the dayUght hours. The Furcilias (Fig. 11) appear to undergo much the same rather restricted vertical movement, Furcilias 4-6, more so perhaps than the early Furcilias, showing a distinct tendency to be massed near the surface both by day and by night.
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Keywords: ., bookcentury1900, booksubjectocean, booksubjectscientificexpediti
