1787 Boricua earthquake

Earthquake that struck Puerto Rico October 2026 October 2026 1787 Boricua earthquake yes May 2, 1787 May 2, 1787 6.9 I y 8.0–8.25 w y Puerto Rico Yes unknown The 1787 Boricua earthquake struck offshore of the island of Puerto Rico on May 2. The magnitude of the earthquake was believed to have been around 8.0–8.25, however there is evidence that it was only about 6.9.ten Brink Dr. Uri Bakun William H. Flores Claudia H. Historical perspective on seismic hazard to Hispaniola and the northeast Caribbean region Journal of Geophysical Research 116 29 December 2011 B12 10.1029/2011JB008497 2011JGRB..11612318T 1912/5022 free The epicenter is thought to have been somewhere north of Puerto Rico, probably on the Puerto Rico Trench.Earthquake History of Puerto Rico and the Virgin Islands on USGS Puerto Rican geomorphologist José Molinelli considers it "the strongest" in the seismic history of the country.http://www.elnuevodia.com/noticias/locales/nota/a229anosdelterremotomasfuerteenlahistoria-2195292/ A 229 años del terremoto "más fuerte en la historia" Alvarado León, Gerardo E. El Nuevo Día May 5, 2016 May 5, 2016 Effects According to some sources, the earthquake was felt all across the Island. It demolished some structures like the Arecibo church,Arecibo on EdicionesDigitales along with monasteries like El Rosario and La Concepcion. It is also reported that it damaged the churches at Bayamon, Toa Baja and Mayagüez. It also caused considerable damage to the forts of San Felipe del Morro and San Cristobal, breaking cisterns, walls and guard houses.El Morro, San Cristobal y San Geronimo en peligro en caso de terremoto https://web.archive.org/web/20140108041846/http://www.noticiasonline.com/D.asp?id=23279 2014-01-08 on NoticiasOnline (6/7/2009) Apparently, the earthquake did not cause major damage in the South of the island, but did crack the walls of the Our Lady of Guadalupe church in Ponce.Historia sísmica de Puerto Rico: Terremotos significativos en la zona de Puerto Rico. SalonHogar.com Accessed 22 March 2018. There are no historical records of damage to the surrounding islands, adding to the evidence that the quake was smaller than previously thought. Evidence The earthquake that struck the island has little historical record itself, but some of the little evidence that exists suggests that effects were done to the topography of the ocean floor. Also, soil deposits give evidence that the event may have had a physical effect on the island; this evidence suggests that the island may have sunk about 3 meters. It is estimated that the tsunami produced by the earthquake may have been some 40–60 ft (12–18 m) high, mostly because the Caribbean ocean in particular is quite shallow. Coastal regions of the island were swamped, producing a thin layer of the crust, showing that salt water had reached almost 2 miles inland.December 2011 See also 1867 Virgin Islands earthquake and tsunami 1918 San Fermín earthquake List of earthquakes in 1918 List of earthquakes in Puerto Rico List of earthquakes in the Caribbean References External links Historia sísmica de Puerto Rico Boricua Earthquake, 1787 Category:1780s earthquakes Category:1787 disasters Category:Earthquakes in Puerto Rico Category:Megathrust earthquakes in North America Category:1787 in New Spain Category:18th century in Puerto Rico