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Components of the USGS National Crustal Model


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Boyd, O.S. and Shah, A.K., 2018, Layers of the USGS National Crustal Model: U.S. Geological Survey data release,


Seismic hazard assessments depend on an accurate prediction of ground motion, which in turn depends on a base knowledge of three-dimensional variations in density, seismic velocity, and attenuation. The datasets here are components of a National Crustal Model that couples geologic characteristics and geophysical parameters using a physical theoretical foundation combined with measured data for calibration. The model is intended to be internally consistent and seamless on a national scale; care is also taken to maximize consistency with existing regional models. An initial version of the model components are defined for the western U.S. on a 1-km grid. While the current focus of this effort is on improving estimates of site response [...]

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These datasets were compiled as components of a National Crustal Model designed to assist estimation of site-specific responses to earthquakes on a regional scale. The datasets may also be used for regional studies in other subject areas.

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doi doi:10.5066/P9T96Q67

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