1936•GeophysicsRequires access
True ground motion from mechanical seismograph records
A. B. Bryan
Open publisher page 2 citations
Abstract
Abstract Records of several types of ground motion are obtained with two vertical mechanical seismographs of widely different characteristics, mounted on the same base and recorded on the same moving photographic paper. Companion records obtained are shown in one case to yield substantially the same calculated ground motion although the original records are very dissimilar.