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Published online by Cambridge University Press: 05 December 2011
The tradition of oceanographical research was established in Scotland, more especially in Edinburgh, in the mid-nineteenth century.
The earliest observations to be made in coastal waters in Scotland are attributed to Robert Stevenson when in 1812 he carried out a survey of the Dee at Aberdeen (Stevenson 1872). He found that while there was an outward upper current of fresh water there was also an inward undercurrent of salt water, which gave rise to the tidal rise and fall in the river. This may be the first recorded example of salt-water density wedge penetration into estuarine waters.