According to the Jamaica Observer, a 4.6 earthquake was felt in my homeland of Jamaica today.
An earthquake measuring 4.6 on the richter scale was felt in sections of Jamaica at 3:32 am this morning. According to the Earthquake Unit at the University of the West Indies, the epicentre of the quake was approximately 80 kilometres Southwest of Black River, St Elizabeth.Earlier this year, the island region was hit by two moderate earthquakes in the space of ten days.
The quake had a focal depth of 5 kilometres and was felt in Southfield, St Elizabeth and Meadowbrook and Havendale in the Corporate Area. - Jamaica Observer.
First, a magnitude 4.2 earthquake struck at 09:29:24am UTC on May 6th. The quake was located at 18.131°N, 76.589°W and had a depth of 20.3 kilometres or 12.6 miles. It had a distance of 26 kilometres east of the Kingston, the capital; 145 kilometres east-south-east of the Montego Bay, the second city; 224 kilometres south from Santiago de Cuba in Cuba and 925 kilometres south of Miami, Florida.
Then, a magnitude 5.0 earthquake hit at 15:07:07 UTC or 10:07am local time on May 16th, and was located at 17.897°N, 77.895°W. The quake had a depth of 31.6 kilometres (km)or 19.6 miles. The epicentre was 62 km or 38 miles south of Montego Bay, the second city; 117 km or 72 miles west of Kingston, the capital city; 304 km or 188 miles southwest of Bayamo in Cuba; and 903 km or 561 miles southeast of Miami in Florida.
Now, according to the U.S. Geological Survey (USGS), Jamaica is located in a seismically active region. The island is associated with the Gonave micro-plate, which is demarcated by the Oriente Fracture Zone (OFZ) to the north, the Walton (WFZ) and Enriquillo Fault Zones (EFZ) to the south and the Cayman Spreading Centre (CSC) to the west. The OFZ, spanning a distance of over 1000 kilometres, from south of Grand Cayman to the north coast of Haiti, is known to be a left-lateral strike-slip fault which means there is a relative westerly drift of Cuba (on the North American Plate) with respect to Jamaica. According to seismological reports on Jamaica, The Walton and Enrriquillo Faults are also left-lateral strike-slip features that separate the Gonave sliver from the Caribbean Plate to the south. Measurements made using Global Positioning System (GPS) indicate 18 mm/year of lateral strain and 3mm/yr of convergence on the OFZ near south-eastern Cuba, and 8-11 mm/yr on Jamaica.