[Geysers] Seasonal Ground Water Effects

[Richard/Marion Powell]

A couple of papers by a first-hand observer might be of interest:
    Geo. D. Marler, 1954, Does the cold of winter affect the thermal intensity of the hot springs in Yellowstone Park, American Journal Science, v. 252, p. 38-54.
    _________, 1964, Seasonal changes in ground water in relation to hot spring activity, American Journal Science, v. 262, p. 674-685.
                             Dick Powell
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