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2014 update of the U.S. national seismic hazard maps

January 1, 2015

We held 8 regional and topical workshops across the U.S. to gather information for these maps. The maps were available to the public for comment during a 60-day period. A Steering Committee (9 experts) was assembled to review the inputs and results and provide additional insights. The maps have been presented at several professional meetings.


In this talk we discuss:


(1) CEUS, (2) WUS (outside California), (3) California, (4) Ground motion models


We discuss the hazard maps and hazard curves used in the building code. The maps in this presentation are for 2% probability of exceedance in 50 years on a uniform firm rock site condition (VS30=760 m/s). Maps are for 0.2 s (5 Hz) spectral acceleration with 5% damping.


We consider difference maps (2014-2008) and ratio maps (2014/2008).

Citation Information

Publication Year 2014
Title 2014 update of the U.S. national seismic hazard maps
Authors Mark D. Petersen, Morgan P. Moschetti, Peter M. Powers, Charles S. Mueller, Kathleen M. Haller, Arthur D. Frankel, Yuehua Zeng, Sanaz Rezaeian, Stephen C. Harmsen, Oliver S. Boyd, Edward H. Field, R Chen, Kenneth S. Rukstales, Nicolas Luco, Russell L. Wheeler, Anna H. Olsen
Publication Type Book
Publication Subtype Conference publication
Index ID 70096755
Record Source USGS Publications Warehouse
USGS Organization Geologic Hazards Science Center