Page:A Voyage of Discovery and Research in the Southern and Antarctic Regions Vol 1.djvu/104

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34
COAST CURRENT.
[Chap. II.
1840

fathoms; which being placed in order will serve to explain the arrangement of the following table.

Distance Temperature. Depth
No. Date. off Shore. Air. Sea. of Water. Remarks.
Miles. Fms.
1 7 120 71° 70° 400 No soundings.
2 8 90 65  63  130 No soundings.
3 45 65  56  127 Temp, at that depth, 45°.
4 10 59  54  65
5 9 10 59  54  47
6 10 60 64  61  200 Temp, at that depth, 43°.5.
7 20 61  55  130
8 11 52 67  64  203
9 32 60  54  142
10 12 51 69  66.5 313
11 36 67  67  202
12 27 58  54.5 72
13 13 7 63  55  58
14 4 59  51.5 48
15 14 27 62  57.5 115
16 15 6 55  51  76 W.N.W. from Cape.
17 16 11 66  62  190 W.S.W. from Cape.
18 17 4 65  60  37 In False Bay, S. E. from Cape.


By a careful examination of the above experiments it will be manifest that the distance to which the cold water extends from the coast depends materially upon the depth of the soundings. It barely reaches forty miles from the shore, where the sea is more than three hundred fathoms deep, but spreads over double that distance in the shallower parts. At forty-five miles from the land, and at a depth of one hundred and twenty fathoms, the temperature was found to be 45°, that of the surface