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Interseismic slip rate pattern
Interseismic slip rate pattern (1966 to 1988) for Parkfield section of San Andreas fault inferred from geodetic measurements. MM and GH are locations of Middle Mountain and Gold Hill, respectively. Location of 1966 aftershocks (circles) and main shocks (star) concentrate in regions of relatively low interseismic slip, suggesting that slip on rupture zone of 1966 earthquake is lagging behind slip to the northwest of Middle Mountain. (Segall and Harris, 1986)