1946 Dominican Republic earthquake
The 1946 Dominican Republic earthquake occurred on August 4 at 17:51 UTC near Samaná, Dominican Republic. The mainshock measured 8.1 on the surface wave magnitude scale and an aftershock occurred four days later on August 8 at 13.28 UTC with a magnitude of 7.6. 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.[3][4][5][6]
 The Septentrional-Oriente fault zone in the Caribbean and across Hispaniola | |
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| UTC time | 1946-08-04 17:51:10 |
|---|---|
| ISC event | 898498 |
| USGS-ANSS | ComCat |
| Local date | August 4, 1946 |
| Local time | 13:51 |
| Magnitude | 8.1 Ms[1] |
| Epicenter | 19°12′00″N 69°18′58″W |
| Areas affected | Dominican Republic |
| Max. intensity | IX (Violent) [2] |
| Peak acceleration | 0.4 g (est) [2] |
| Tsunami | Yes |
| Casualties | 2,550 |
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.[7]
References
- Dolan, James F. (1998). Paul Mann (ed.). Active Strike-Slip and Collisional Tectonics of the Northern Caribbean Plate Boundary Zone. Geological Society of America. p. 44. ISBN 978-0-8137-2326-6.
- Lynch, Joseph J.; Bodle, Ralph R. (1948), "The Dominican earthquakes of August, 1946", Bulletin of the Seismological Society of America, 38 (1): 4, 5
- "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.
Further reading
- Small, Walter M. (1948), "A short description of the general geology of the Dominican Republic, with notes on the earthquake of August 4, 1946", Bulletin of the Seismological Society of America, 38 (1): 19–32
External links
- The International Seismological Centre has a bibliography and/or authoritative data for this event.
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