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Articles
Earth Tremors Generated by Old Faithful Geyser
1 U. S. Coast and Geodete Survey, Environmental Science Services Administration, Rockville, Maryland
Several types of earth tremors that could be associated with the eruption cycle of Old Faithful Geyser were registered by a seismograph placed a few meters from the geyser's orifice. Each tremor type was indicative of a specific geyser action. A totally unexpected result was an observed bimodal distribution in frequency of the interval between eruptions.
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Science. ISSN 0036-8075 (print), 1095-9203 (online)