Abstract
THE Jesuit Seismological Association at Saint Louis, U.S.A., has determined tentatively the epicentres of three recent earthquakes. From the readings of sejsmograms from eight stations the earthquake of June 27 at 17h. llm. 30s. G.M.T. was found to have an epicentre near 16° N., 93° W., which is south–west of La ConcoTdia in southern Mexico. By the Brunner chart the depth of focus was estimated to be 200 km., which is somewhat unusually deep for the fairly frequent normal and intermediate earthquakes in this area. From the readings of seismograms from sixteen stations the earthquake of July 1, at 7h. 50m. 57s. G.M.T., was found to have an epicentre near 34.4° N., 119.5° W. Damage by this earthquake was done in and about Santa Barbara, California, and the agreement is good. From the interpretations of records from ten seismographic stations the epicentre of the earthquake of July 3, at 7K llm. 51s. G.M.T., was found to be near 31° S., 68.7° W. This earthquake was felt at Mendoza in the Argentine Republic.
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Recent Earthquakes. Nature 148, 406 (1941). https://doi.org/10.1038/148406a0
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DOI: https://doi.org/10.1038/148406a0