TY - RPRT TI - The 2018 update of the US National Seismic Hazard Model: Ground motion models in the western US AU - Peter M. Powers AU - Sanaz Rezaeian AU - Allison M. Shumway AU - Mark D. Petersen AU - Nico Luco AU - Oliver S. Boyd AU - Morgan P. Moschetti AU - Arthur D. Frankel AU - Eric M. Thompson PY - 2021 DO - 10.1177/87552930211011200 UR - https://pubs.usgs.gov/publication/70231206 ID - 70231206 ER -