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07. Modified Mercalli Intensity maps for the conterminous U.S., Alaska, and Hawaii

For the 2023 Update of the U.S. National Seismic Hazard Model for the 50 States

Dates

Publication Date

Citation

Petersen, M.D., Shumway, A.M., Powers, P.M., Field, E.H., Moschetti, M.P., Jaiswal, K.S., Milner, K.R., Rezaeian, S., Frankel, A.D., Llenos, A.L., Michael, A.J., Altekruse, J.M., Ahdi, S.K., Withers, K.B., Mueller, C.S., Zeng, Y., Chase, R.E., Salditch, L.M., Luco, N., Rukstales, K.S., Herrick, J.A., Girot, D.L., Aagaard, B.T., Bender, A.M., Blanpied, M.L., Briggs, R.W., Boyd, O.S., Clayton, B.S., DuRoss, C.B., Evans, E.L., Haeussler, P.J., Hatem, A.E., Haynie, K.L., Hearn, E.H., Johnson, K.M., Kortum, Z.A., Kwong, N.S., Makdisi, A.J., Mason, H.B., McNamara, D.E., McPhillips, D.F., Okubo, P.G., Page, M.T., Pollitz, F.F., Rubinstein, J.L., Shaw, B.E., Shen, Z.K., Shiro, B.R., Smith, J.A., Stephenson, W.J., Thompson, E.M., Thompson Jobe, J.A., Wirth, E.A., and Witter, R.C., 2023, Data Release for the 2023 U.S. 50-State National Seismic Hazard Model - Overview: U.S. Geological Survey data release, https://doi.org/10.5066/P9GNPCOD.

Summary

Peak ground acceleration ground motion values for 50, 10, and 2 percent probability of exceedance in 50 years are converted to equivalent modified Mercalli intensity using the relationships of Worden and others (2012). Values are for NEHRP site class B/C with a VS30 = 760 m/s.

Contacts

Point of Contact :
Allison M Shumway
Originator :
Kenneth S Rukstales
Project Chief :
Mark D Petersen
Metadata Contact :
GHSC Data Steward
Publisher :
U.S. Geological Survey
Distributor :
U.S. Geological Survey - ScienceBase

Attached Files

Click on title to download individual files attached to this item.

US_2023_MMI_Maps.zip
“Maps in PDF format”
7.89 MB application/zip
US_MMI_2Pct_10Pct_50Pct_50Yrs_BC.zip
“GIS shapefiles”
6.76 MB application/zip
US_2023_MMI_2PctIn50Yrs_Vs30_760.png
“Example map of the United States showing MMI for 2% exceedance in 50Yrs for B/C.”
thumbnail 1.83 MB image/png

Purpose

This dataset is intended to provide an estimate of the chance of potentially damaging ground shaking in 100 years, based on the 2023 50-State update to the USGS National Seismic Hazard Model.

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