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Database for the Central United States Velocity Model, v1.3

September 16, 2021

We have developed a new three-dimensional seismic velocity model of the central United States (CUSVM) that includes the New Madrid Seismic Zone (NMSZ) and covers parts of Arkansas, Mississippi, Alabama, Illinois, Missouri, Kentucky, and Tennessee. The model represents a compilation of decades of crustal research consisting of seismic, aeromagnetic, and gravity profiles; geologic mapping; geophysical and geological borehole logs; and inversions of the regional seismic properties. The density and P- and S-wave velocities are synthesized in a stand-alone spatial database that can be queried to generate the required input for numerical seismic-wave propagation simulations. The velocity model has been tested and calibrated by simulating ground motions of the 18 April 2008 Mw 5.4 Mt. Carmel, Illinois, earthquake and comparing the results with observed records within the model area (see associated publication). This dataset includes the database needed to construct velocity profiles from the CUSVM. The code to calculate velocity using this dataset can be found at Please see the associated publication for specifics about how the surfaces and velocity information is compiled and accessed. The domain of the velocity model is: LON_min = -92.9 LON_max = -85.1 LAT_min = 33.1 LAT_max = 39.9 depth_min = 0 depth_max = 60e3 The database consists of: Control file: Surfaces: Velocity information:,surf,surf,surf surf_mesocenozoic.surfvs30 surf_quaternaryembayment.surfvs30

Citation Information

Publication Year 2021
Title Database for the Central United States Velocity Model, v1.3
DOI 10.5066/P995PCQY
Authors Oliver S Boyd, Leonardo Ramirez Guzman
Product Type Data Release
Record Source USGS Digital Object Identifier Catalog
USGS Organization Earthquake Hazards Program

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