TY - RPRT TI - Estimation of site terms in ground-motion models for California using horizontal-to-vertical spectral ratios from microtremor AU - Camilo Pinilla Ramos AU - Norman A. Abrahamson AU - Robert Kayen PY - 2022 DO - 10.1785/0120220033 UR - https://pubs.usgs.gov/publication/70237838 ID - 70237838 ER -