TY - RPRT TI - Assessment of the effects of local geology using long-period microtremors and the 1989 Loma Prieta earthquake motions AU - Junpei Akamatsu AU - Masayuki Fujita AU - Hiroyuki Kameda AU - Mehmet Çelebi AU - R. D. Borcherdt PY - 1992 DO - 10.3133/ofr92214 UR - https://pubs.usgs.gov/publication/ofr92214 ID - ofr92214 ER -