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Chance of slight (MMI ≥ VI) damaging earthquake shaking in 100 years

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Publication Date

Citation

Petersen, M.D., Harmsen, S.C., Jaiswal, K.S., Rukstales, K.S., Luco, N., Haller, K.M., Mueller, C.S., and Shumway, A.M., 2018, Seismic Hazard, Risk, and Design for South America: U.S. Geological Survey data release, https://doi.org/10.5066/F7Wm1BK1.

Summary

This maps portrays the spatial potential for damaging earthquake ground shaking quantified as slight (MMI ≥ VI) in 100 years. The maps and data are based on the average of the results obtained from peak ground acceleration and 1.0-second horizontal spectral acceleration. Site specific soil factors based on Vs30 shear wave velocities were implemented using a simple topographic proxy technique (Allen and Wald, 2009) and site amplification based on the relationships of Seyhan and Stewart (2014). MMI ≥ VI is equivalent to peak ground acceleration of 0.12g and 1.0-second horizontal spectral acceleration of 0.1g (Worden et al., 2012). Allen, T.A. and Wald, D.J. 2009,. On the use of high-resolution topographic data as a proxy for seismic [...]

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Attached Files

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ProbMMI6_100yrs_w_soils.png
“Map in PNG format”
thumbnail 193.25 KB
ProbMMI6_100yrs_w_soils.pdf
“Map in PDF format”
477.4 KB
SAavg_ProbMMI6_100yrs_soil.dat
“Gridded data”
9.17 MB

Purpose

This map is intended to summarize the available quantitative information about seismic ground motion hazard for South America from geologic and geophysical sources.

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