Old travel Blog photograph of the Sailing Schoo at Loch Earn by St Fillans in Highland Perthshire, Scotland. Loch Earn is unusual in that it has its own apparent tidal system caused by the action of the prevailing wind blowing along the loch. This wind pressure on the surface causes the water level to build up at one end of the loch. As with all damped mechanical systems, applied pressure can result in an oscillation, and the water will return to the opposite end of the loch over time. In the case of Loch Earn, this has a period of 16 hours and the effect can be measured, but is difficult to observe.
All photographs are copyright of Sandy Stevenson, Tour Scotland, and may not be used without permission.
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