212
J. A. KITCHING AND F. J . EBLINO
TOPS
v
u
u
............................................. ~ ....... -..-'.
....__
40
BOTTOMS
3
MARK OF SPRING TIDE
FIG. 10. Average dry weight of sediment, in grams per 1000 sq. cm of surface, on tops
and bottoms of boulders.
In places where the current is strong, the chemical conditions of the
water are held fairly constant, although temperature fluctuates with
inflow and outflow. We measured physical and chemical conditions a t
a number of stations over a period of 24 h during fine weather, and the
conclusions are summarized in Fig. 11 (Kitching et al., 1952). We found
a fall in the percentage saturation with oxygen, and a rise in CO, concentration, 5 cm above the bottom in Codium Bay a t the time of low
slack water (Fig. 12). There are slight indications of a similar change at
other stations in quiet water. The mud no doubt has considerable reducing power, which can affect the overlying water when this becomes
J. A. KITCHING AND F. J . EBLINO
TOPS
v
u
u
............................................. ~ ....... -..-'.
....__
40
BOTTOMS
3
MARK OF SPRING TIDE
FIG. 10. Average dry weight of sediment, in grams per 1000 sq. cm of surface, on tops
and bottoms of boulders.
In places where the current is strong, the chemical conditions of the
water are held fairly constant, although temperature fluctuates with
inflow and outflow. We measured physical and chemical conditions a t
a number of stations over a period of 24 h during fine weather, and the
conclusions are summarized in Fig. 11 (Kitching et al., 1952). We found
a fall in the percentage saturation with oxygen, and a rise in CO, concentration, 5 cm above the bottom in Codium Bay a t the time of low
slack water (Fig. 12). There are slight indications of a similar change at
other stations in quiet water. The mud no doubt has considerable reducing power, which can affect the overlying water when this becomes