Report of Advisory Committee in Seismology

adjustment Advisory Committee aftershocks amplitude apparatus arc of triangulation assembly Beno Gutenberg Cajon Pass California Institute Carnegie Institution clock Coast and Geodetic Committee in Seismology continued damping Death Valley desert determined developed displacements distance earth movements epicenters escarpment experimental fault zone fault-zone first-order Gabriel Range galvanometer Garlock fault Geodetic Survey Geological granite Gutenberg H. O. Wood HARRY FIELDING REID horizontal Hugo Benioff Institution of Washington J. A. ANDERSON J. P. BUWALDA lines of levels located long-period magnitude measurement ment miles Mohave Desert Mount Wilson Mount Wilson Observatory mountain Nevada Observatory occurred October operation originated Panamint Valley Pasadena pendulum period Quaternary recent recording drums region registered routine San Andreas fault San Andreas rift San Bernardino Santa Barbara seismograph Seismological Laboratory Seismological Society SEISMOLOGY Report seismometer Southern California stations structure teleseisms Tertiary time-marking tion torsion seismometers U. S. Coast vertical waves