Abstract
ACCORDING to the Central Seismological Bureau at Strasbourg, 132 earthquakes were registered by seismographs or felt by people during June 1939. The most on any one day was ten on June 4, and the least on any one day was one on June 25. Undoubt-edly the strongest shock during June was that of June 22 on the Gold Coast, having an epicentre provisionally calculated to be 5·7° N., 0·7° W. The next three in intensity were June 18, felt scale 7 (Rossi-Forel) at Costa Rica, June 5 with epicentre in the Atlantic west of the Azores, and June 8 with possible deep focus (130 km.) in the Islands of Samoa. Other shocks for which provisional epicentres could be obtained were June 3, Tananarive (scale 2); June 4, north-west Australia and Arizona; June 6, Algeria; June 12, Porto Rico; June 23, near Apia; June 24, two in California; June 27, Philippines; and June 29, Vrancea. During June the Fort de France station registered eight local tremors.
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Earthquakes during June 1939. Nature 144, 507 (1939). https://doi.org/10.1038/144507d0
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DOI: https://doi.org/10.1038/144507d0