Abstract
DURING February 2-March 5 four large earthquakes were registered on the seismographs at Kew Observatory. The first, on February 2, began recording at 17h. 15m. 28s. U.T., possibly from an epicentral distance of 1,500 km., though long waves were not pronounced and the shock appeared to possess some of the deep-focus characteristics. On February 16 a strong shock began recording at 18h. 27m. 31s. U.T., possibly from an epicentral distance of 13,300 km. It finished recording at 20h. 00m., having lasted some lh. 32.5m. The third earthquake, on February 21, began recording on all three components with iP compressional at 07h. 20m. 14s. The tentative calculated epicentral distance was 9,300 km. The shock appeared to be normal, had a maximum ground amplitude at Kew of 72 µ, and finished recording at 09h. 40m. U.T. The third disturbance, on March 5, began recording near 19h. 59m. 56s. U.T., though the start of iP was somewhat confused by microseisms. The epicentral distance may have been near 8,200 km., the long waves were of small amplitude, and the shock finished recording at 2lh. 10m. U.T.
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Earthquakes Registered at Kew. Nature 149, 409 (1942). https://doi.org/10.1038/149409c0
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DOI: https://doi.org/10.1038/149409c0