TY - RPRT TI - Strong ground motions in two seismic gaps; Shumagin Islands, Alaska, and northern Lesser Antilles, Carribbean AU - K.H. Jacob AU - W.R. McCann PY - 1982 DO - 10.3133/ofr82139 UR - https://pubs.usgs.gov/publication/ofr82139 ID - ofr82139 ER -