Seismic-hazard maps for the conterminous United States

2005 ◽  
Author(s):  
Arthur D. Frankel ◽  
Mark D. Petersen ◽  
Charles S. Mueller ◽  
Kathleen M. Haller ◽  
Russell L. Wheeler ◽  
...  
Keyword(s):  
United States ◽  
Seismic Hazard ◽  
Hazard Maps ◽  
Seismic Hazard Maps

Documentation for the 2008 update of the United States National Seismic Hazard Maps

2008 ◽  
Author(s):  
Mark D. Petersen ◽  
Arthur D. Frankel ◽  
Stephen C. Harmsen ◽  
Charles S. Mueller ◽  
Kathleen M. Haller ◽  
...  
Keyword(s):  
United States ◽  
Seismic Hazard ◽  
The United States ◽  
Hazard Maps ◽  
Seismic Hazard Maps

Seismic-Hazard Maps for the Conterminous United States

1997 ◽  
Author(s):  
Arthur D. Frankel ◽  
C. Mueller ◽  
T. Barnhard ◽  
D. Perkins ◽  
E.V. Leyendecker ◽  
...  
Keyword(s):  
United States ◽  
Seismic Hazard ◽  
Hazard Maps ◽  
Seismic Hazard Maps

scholarly journals Estimating Annualized Earthquake Losses for the Conterminous United States

2015 ◽  
Vol 31 (1_suppl) ◽  
pp. S221-S243 ◽  
Author(s):  
Kishor S. Jaiswal ◽  
Douglas Bausch ◽  
Rui Chen ◽  
Jawhar Bouabid ◽  
Hope Seligson
Keyword(s):  
United States ◽  
Seismic Hazard ◽  
Census Data ◽  
Eastern United States ◽  
Hazard Maps ◽  
Building Stock ◽  
Seismic Hazard Maps ◽  
Earthquake Losses ◽  
Earthquake Loss

We make use of the most recent National Seismic Hazard Maps (the years 2008 and 2014 cycles), updated Census data on population, and economic exposure estimates of general building stock to quantify annualized earthquake loss (AEL) for the conterminous United States. The AEL analyses were performed using the Federal Emergency Management Agency's Hazus software, which facilitated a systematic comparison of the influence of the 2014 National Seismic Hazard Maps in terms of annualized loss estimates in different parts of the country. The losses from an individual earthquake could easily exceed many tens of billions of dollars, and the long-term averaged value of losses from all earthquakes within the conterminous United States has been estimated to be a few billion dollars per year. This study estimated nationwide losses to be approximately $4.5 billion per year (in 2012 dollars), roughly 80%of which can be attributed to the states of California, Oregon, and Washington. We document the change in estimated AELs arising solely from the change in the assumed hazard map. The change from the 2008 map to the 2014 map results in a 10% to 20% reduction in AELs for the highly seismic states of the Western United States, whereas the reduction is even more significant for the Central and Eastern United States.

scholarly journals Geodesy- and geology-based slip-rate models for the Western United States (excluding California) national seismic hazard maps

2014 ◽  
Author(s):  
Mark D. Petersen ◽  
Yuehua Zeng ◽  
Kathleen M. Haller ◽  
Robert McCaffrey ◽  
William C. Hammond ◽  
...  
Keyword(s):  
United States ◽  
Seismic Hazard ◽  
Slip Rate ◽  
Western United States ◽  
Hazard Maps ◽  
Seismic Hazard Maps

USGS National Seismic Hazard Maps

2000 ◽  
Vol 16 (1) ◽  
pp. 1-19 ◽  
Author(s):  
A. D. Frankel ◽  
C. S. Mueller ◽  
T. P. Barnhard ◽  
E. V. Leyendecker ◽  
R. L. Wesson ◽  
...  
Keyword(s):  
United States ◽  
South Carolina ◽  
Seismic Hazard ◽  
Spectral Response ◽  
The United States ◽  
Great Earthquake ◽  
Hazard Maps ◽  
Seismic Hazard Maps ◽  
Large Earthquakes ◽  
Historic Seismicity

The U.S. Geological Survey (USGS) recently completed new probabilistic seismic hazard maps for the United States, including Alaska and Hawaii. These hazard maps form the basis of the probabilistic component of the design maps used in the 1997 edition of the NEHRP Recommended Provisions for Seismic Regulations for New Buildings and Other Structures, prepared by the Building Seismic Safety Council and published by FEMA. The hazard maps depict peak horizontal ground acceleration and spectral response at 0.2, 0.3, and 1.0 sec periods, with 10%, 5%, and 2% probabilities of exceedance in 50 years, corresponding to return times of about 500, 1000, and 2500 years, respectively. In this paper we outline the methodology used to construct the hazard maps. There are three basic components to the maps. First, we use spatially smoothed historic seismicity as one portion of the hazard calculation. In this model, we apply the general observation that moderate and large earthquakes tend to occur near areas of previous small or moderate events, with some notable exceptions. Second, we consider large background source zones based on broad geologic criteria to quantify hazard in areas with little or no historic seismicity, but with the potential for generating large events. Third, we include the hazard from specific fault sources. We use about 450 faults in the western United States (WUS) and derive recurrence times from either geologic slip rates or the dating of pre-historic earthquakes from trenching of faults or other paleoseismic methods. Recurrence estimates for large earthquakes in New Madrid and Charleston, South Carolina, were taken from recent paleoliquefaction studies. We used logic trees to incorporate different seismicity models, fault recurrence models, Cascadia great earthquake scenarios, and ground-motion attenuation relations. We present disaggregation plots showing the contribution to hazard at four cities from potential earthquakes with various magnitudes and distances.

Ground Motion Models Used in the 2014 U.S. National Seismic Hazard Maps

2015 ◽  
Vol 31 (1_suppl) ◽  
pp. S59-S84 ◽  
Author(s):  
Sanaz Rezaeian ◽  
Mark D. Petersen ◽  
Morgan P. Moschetti
Keyword(s):  
United States ◽  
Seismic Hazard ◽  
Ground Motion ◽  
The United States ◽  
Hazard Maps ◽  
Source Characterization ◽  
Ground Acceleration ◽  
Seismic Hazard Maps ◽  
Motion Models ◽  
Ground Motion Models

The National Seismic Hazard Maps (NSHMs) are an important component of seismic design regulations in the United States. This paper compares hazard using the new suite of ground motion models (GMMs) relative to hazard using the suite of GMMs applied in the previous version of the maps. The new source characterization models are used for both cases. A previous paper ( Rezaeian et al. 2014 ) discussed the five NGA-West2 GMMs used for shallow crustal earthquakes in the Western United States (WUS), which are also summarized here. Our focus in this paper is on GMMs for earthquakes in stable continental regions in the Central and Eastern United States (CEUS), as well as subduction interface and deep intraslab earthquakes. We consider building code hazard levels for peak ground acceleration (PGA), 0.2-s, and 1.0-s spectral accelerations (SAs) on uniform firm-rock site conditions. The GMM modifications in the updated version of the maps created changes in hazard within 5% to 20% in WUS; decreases within 5% to 20% in CEUS; changes within 5% to 15% for subduction interface earthquakes; and changes involving decreases of up to 50% and increases of up to 30% for deep intraslab earthquakes for most U.S. sites. These modifications were combined with changes resulting from modifications in the source characterization models to obtain the new hazard maps.

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