Abstract
THE U.S. Coast and Geodetic Survey, in co–operation with Science Sarvice and the Jesuit Seismological Association, has determined the tentative epicentres of four recent earthquakes from reports received from seismograph stations. On August 2 the earthquake at llh. 41.5m. U.T. had its epicentre near latitude 30° S., longitude 178.5° W. This is in the Pacific Ocean just west of the Kermadec Islands and the Aldrich Deep so that the suggested depth of focus of 100 km. is not unusual. Deep–focus earthquakes are frequent in this area. The earthquake of August 4 at lOh. 53m. U.T. probably had its epicentre near latitude 52° N., longitude 176-5° W., which is in the north Pacific Ocean near Adak Island of the Aleutian Islands group. The depth of focus of 100 km. was somewhat unusual for the district though it was exceeded by as much as 100 km. by the earthquake of August 6 at 6h. 15.3m. U.T. The epicentre of this latter shock was on the Alaska Peninsula. On August 15 the earthquake at 6h. 9.5m. U.T. probably had its epicentre near latitude 19°N., longitude 27° W., which is in the Atlantic Ocean north–west of St. Vincent of the Cape Verde Islands. As all these shocks had epicentres distant from human habitation no damage has been reported, but had they been near centres of population they would undoubtedly have been strong enough to cause considerable damage.
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Recent Earthquakes. Nature 148, 529–530 (1941). https://doi.org/10.1038/148529d0
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DOI: https://doi.org/10.1038/148529d0