The 1946 Dominican Republic earthquake occurred on August 4 at 17:51 UTC near Samaná, Dominican Republic. The mainshock measured 7.8 on the moment magnitude scale[3] and 8.1 on the surface wave magnitude scale.[4] An aftershock occurred four days later on August 8 at 13:28 UTC with a moment magnitude of 7.0.[5] A tsunami was generated by the initial earthquake and caused widespread devastation across Hispaniola. The tsunami was observed in much of the Caribbean and the northwestern Atlantic Ocean.[6][7][8][9]
A small tsunami was also recorded by tide gauges at San Juan in Puerto Rico, Bermuda and in the United States at Daytona Beach, Florida and Atlantic City, New Jersey.[10]
^"M 7.8 - 16 km NNW of Miches, Dominican Republic". earthquake.usgs.gov. Retrieved 9 August 2022.
^ abCite error: The named reference Lynch was invoked but never defined (see the help page).
^"M 7.8 - 16 km NNW of Miches, Dominican Republic". earthquake.usgs.gov. Retrieved 9 August 2022.
^Cite error: The named reference Dolan was invoked but never defined (see the help page).
^"M 7.0 - 24 km NNW of Las Terrenas, Dominican Republic". earthquake.usgs.gov. Retrieved 9 August 2022.
^"Northern Chile Rocked By Earthquake: West Indies Too". Morning Bulletin (Rockhampton, Qld. : 1878 - 1954). 6 August 1946. Retrieved 29 October 2019.
^Historic Earthquakes: Samana, Dominican Republic 1946 Archived 2008-06-02 at the Wayback Machine, USGS, Retrieved June 10, 2008
^Woods Hole Oceanographic Institution (February 8, 2005). "Major Caribbean Earthquakes And Tsunamis A Real Risk". Science Daily. Retrieved December 9, 2012.
^O'Loughlin, Karen Fay; Lander, James F. (2003), Caribbean tsunamis: a 500-year history from 1498–1998, Boston: Kluwer, p. 82, ISBN 978-1-4020-1717-9
^Lander, James F.; Lockridge, Patricia A. (1989). United States Tsunamis, (including United States possessions) 1690–1988: Publication 41-2(PDF). United States Department of Commerce. pp. 219, 220.
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