Seismic Source Characterization for the 2014 Update of the U.S. National Seismic Hazard Model
- 8 December 2015
- journal article
- research article
- Published by Wiley in Earthquake Spectra
- Vol. 31 (1S)
Abstract
We present the updated seismic source characterization (SSC) for the 2014 update of the National Seismic Hazard Model (NSHM) for the conterminous United States. Construction of the seismic source models employs the methodology that was developed for the 1996 NSHM but includes new and updated data, data types, source models, and source parameters that reflect the current state of knowledge of earthquake occurrence and state of practice for seismic hazard analyses. We review the SSC parameterization and describe the methods used to estimate earthquake rates, magnitudes, locations, and geometries for all seismic source models, with an emphasis on new source model components. We highlight the effects that two new model components—incorporation of slip rates from combined geodetic‐geologic inversions and the incorporation of adaptively smoothed seismicity models—have on probabilistic ground motions, because these sources span multiple regions of the conterminous United States and provide important additional epistemic uncertainty for the 2014 NSHM.Keywords
This publication has 38 references indexed in Scilit:
- Disposal of Hydrofracking Waste Fluid by Injection into Subsurface Aquifers Triggers Earthquake Swarm in Central Arkansas with Potential for Damaging EarthquakeSeismological Research Letters, 2012
- High-Resolution Long-Term and Short-Term Earthquake Forecasts for CaliforniaBulletin of the Seismological Society of America, 2011
- The Collaboratory for the Study of Earthquake Predictability perspective on computational earthquake scienceConcurrency and Computation: Practice and Experience, 2010
- High-resolution Time-independent Grid-based Forecast for M >= 5 Earthquakes in CaliforniaSeismological Research Letters, 2007
- Statistical Analysis of the Hypothesis That Seismicity Delineates Areas Where Future Large Earthquakes Are Likely to Occur in the Central and Eastern United StatesSeismological Research Letters, 2002
- GPS deformation in a region of high crustal seismicity: N. Cascadia forearcEarth and Planetary Science Letters, 2002
- GPS‐determination of along‐strike variation in Cascadia margin kinematics: Implications for relative plate motion, subduction zone coupling, and permanent deformationTectonics, 2001
- Geology in the 1996 USGS Seismic-hazard Maps, Central and Eastern United StatesSeismological Research Letters, 2000
- How Well Does the Spatial Distribution of Smaller Earthquakes Forecast the Locations of Larger Earthquakes in the Northeastern United States?Seismological Research Letters, 1998
- Seismic activity on neighbouring faults as a long-term precursor to large earthquakes in the San Francisco Bay areaNature, 1990