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Reference for Maine earthquake return time calculations:
Ebel, John E., 1989, The Seismicity of Maine. In Anderson, Walter A., and Borns, Harold W., Jr., editors, Neotectonics of Maine: Maine Geological Survey, p. 219-228.
Based on analysis of Maine earthquake data recorded from October, 1975, to June, 1986, the following recurrence curve (equation 2, p. 221) is given:
log N (per year) = 2.79 (± 0.029) - 0.89 (± 0.014) Mc
where N is the number of earthquakes equaling or exceeding magnitude Mc in a given year.
Last updated on October 6, 2005
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