An earthquake measuring 2.5 on the Richter scale was felt this Friday on the island of Terceira, the Azores Center for Seismic Volcanic Information and Observation (CIVISA) reported.
According to CIVISA, the earthquake was recorded at 7:50 a.m. local time (8:50 a.m. in Lisbon) and had an epicenter approximately three kilometers southeast of Serreta, on the island of Terceira.
“According to the information currently available, the earthquake was felt at maximum intensity IV (modified Mercalli scale) in the parishes of Altares, Raminho, Serreta and Dose Ribeiras (municipality of Angra do Heroísmo),” CIVISA said in a statement.
This event “is part of the ongoing seismic-volcanic crisis on the island of Terceira since June 2022.”
On the Richter scale, earthquakes are classified by magnitude into micro (less than 2.0), very small (2.0-2.9), small (3.0-3.9), weak (4.0-4.9), moderate (5.0-5.9), strong (6.0-6.9), large (7.0-7.9), important (8.0-8.9), exceptional (9.0- 9.9) and extreme (when more than 10).
The Modified Mercalli Scale measures “degree of intensity and corresponding description.”
According to the Portuguese Institute of the Sea and Atmosphere (IPMA), at intensity IV, considered moderate, parked cars shake, windows, doors and utensils shake, and “glasses and utensils rattle or clank,” and walls or wooden structures may creak. on your website.
Author: Lusa
Source: CM Jornal
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