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Figure 3. Geologic map of the Nicoya Peninsula showing boundaries of the Nicoya seismic gap (orange dashed lines), epicenters of large subduction earthquakes (red circles), and aftershock zones of the 1978, 1990, and 1992 events (red dashed lines). The limits of the 1990 and 1992 ruptures coincide with the edges of the seismic gap. The last major rupture of the Nicoya segment (1950; M=7.7) produced 1-2 m of coseismic coastal uplift (Marshall and Anderson, 1995).

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Uploaded: Jan13 09


Last Modified: 2009-01-13 13:02:29
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Jeff Marshall
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