Rhythmic spring

A rhythmic spring (also: ebb and flow spring, periodic spring, intermittent spring) is a cold water spring from which the flow of water either varies or starts and stops entirely, over a fairly regular time-scale of minutes or hours. Compared to continuously-flowing springs, rhythmic springs are uncommon, with the number worldwide estimated in 1991 to be around one hundred.^[1]

^ Mather (2013), p.135, citing Bonacci and Bojanić, 1991. Mather notes that the figure of 100 is likely to be an underestimate.

[1] Mather (2013), p.135, citing Bonacci and Bojanić, 1991. Mather notes that the figure of 100 is likely to be an underestimate.

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