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XVI.—The Temperature of the Fresh-water Lochs of Scotland, with special reference to Loch Ness. With Appendix containing Observations made in Loch Ness by Members of the Scottish Lake Survey

Published online by Cambridge University Press:  06 July 2012

E. M. Wedderburn
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Extract

My object in this paper is not, as the title might suggest, to give a comparative study of the fresh-water lochs of Scotland from the point of view of temperature. I had hoped at one time that this would be possible, and I may again return to this part of the subject of lake temperatures; but the more I have considered the question the more am I convinced that such a comparative study from the observations at my disposal would be based on assumptions too fundamental and too uncertain to make the conclusions reached of any great value. Consider the factors which go to produce variations of temperature as they are given by Professor Forel. Briefly, these are the indirect action of the sun in heating up the atmosphere and the surroundings of the loch, radiation from the loch, the effect of warm or cold water brought into the loch by rivers and by rain.

Type
Research Article
Information
Earth and Environmental Science Transactions of The Royal Society of Edinburgh , Volume 45 , Issue 2 , 1907 , pp. 407 - 489
Copyright
Copyright © Royal Society of Edinburgh 1907

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References

page 407 note * Le Léman, vol. ii. p. 289.

page 407 note † See Geographical Journal, January 1904, for the Lake Survey report upon these lochs.

page 408 note * Unless otherwise stated, the temperature scale is always Fahrenheit.

page 408 note † Geographical Journal, April 1900.

page 409 note * Geographical Journal, March 1901.

page 409 note † Geographical Journal, January 1904.

page 409 note ‡ The observations were carried out by Sir John Murray, Dr T. N. Johnston, Mr R. C. Marshall, Mr James Murray, Mr E. R. Watson, Mr E. M. Wedderburn, and Mr F. G. Pearcey, under the direction of Sir John Murray, K.C.B., and Mr Laurence Pullar. Valuable observations were also made by the Lake Survey oatmen, Philip Campbell, Fraser, Grant, and M'donald.

page 410 note * In particular, the observations were in charge of the Rev. Fr. Cyril Von Dieckhoff and the Rev. Fr. Odo Blundell.

page 411 note * See page 427.

page 411 note † The mean Air Temperature in these tables is taken from the Registrar-General's Reports.

page 416 note * In particular, see Sir John Murray's paper “On the Effects of Winds on the Distribution of Temperature in the Sea- and Fresh-water Lochs of the West of Scotland,” Scottish Geographical Magazine, July 1888.

page 417 note * Scottish Geographical Magazine, July 1888.

page 419 note * Geographical Journal, October 1904.

page 420 note * The waters of Loch Ness have never been known to freeze save round the shores, as the water is never cooled down to the maximum density point.

page 420 note † Proc. Roy. Soc. Edin., 1900–1901, vol. xxiii. p. 296Google Scholar.

page 423 note * The actual scale of the platinum thermometers was, for practical reasons, not accurately determined. The sudden change between 4 p.m. and 5 p.m. means an increase in temperature of about 9° F.

page 424 note * I, Invermorriston, noon, 13th September 1904; II, Inverfarigaig, noon, 17th September 1904.

page 430 note * No. 1. Thermometer at 5 feet, 22–33 May 1904. No. 2. Thermometer at 5 feet, 23–24 May. No. 3. Thermometer at surface, 24–25 May. See also footnote, page 423.

page 431 note * See footnote, page 423.