TY - RPRT TI - Horizontal-to-vertical spectral ratios from California sites: Open-source database and data interpretation to establish site parameters AU - Pengfei Wang AU - Paolo Zimmaro AU - Tatiana Gospe AU - Sean Kamran Ahdi AU - Alan Yong AU - Jonathan P. Stewart PY - 2021 DO - 10.34948/n3kw20 UR - https://pubs.usgs.gov/publication/70223682 ID - 70223682 ER -