TY - RPRT TI - Estimation of strong ground motions from hypothetical earthquakes on the Cascadia subduction zone, Pacific Northwest AU - T. H. Heaton AU - S.H. Hartzell PY - 1989 DO - 10.1007/bf00874626 UR - https://pubs.usgs.gov/publication/70015691 ID - 70015691 ER -