Report of the Advisory Committee in Seismology

Abstract

The report of the Advisory Committee for the year ending June 30, 1927, is necessarily brief in content and transitional in character. Development work in the laboratory has been more or less interrupted throughout the year by the confusion of dismanteling the equipment at the Mount Wilson Observatory and removing it to the new Seismological Laboratory provided by the California Institute of Technology. The equipment of the various sub-stations about Pasadena and the adjustment of new apparatus therein has been going on throughout the year, but the continuous daily record of tremors is still tentative and inadequate because of the lack of a proper minute-to-minute time service through which to compare them. Progress in the San Francisco Bay region, which has been greatly stimulated through the personal efforts of Mr. Willis of this Committee, is also passing through similar transitional operations, and Mr. Willis is now absent on a journey around the world in the interest of general seismology. However, these activities are in themselves adequate evidence of progress even though we must wait for tangible results from them until the next and following years.