An earthquake measuring 2.4 on the Richter scale was felt this morning in the municipality of Angra do Heroismo on the island of Terceira in the Azores, civil protection said.
The website of the Regional Civil Protection and Fire Service of the Azores reports that the earthquake was recorded by the Azores Center for Volcano Seismic Information and Observation (CIVISA) at 06:49 local time (07:49 Lisbon) with a magnitude of 2.4 on the Richter scale. and the epicenter about one kilometer SSE (south-southeast) of Posto Santo, Terceira Island, in the Azores.
According to the currently available information, an earthquake with a maximum intensity of IV (modified Mercalli scale) was felt in the parishes of Sant Bartolomeu de Regatos, Sant Mateos da Calheta, Terra Cha, San Pedro, Se, Santa Luzia, Posto Santo, Nossa. Senhora da Conceicao, São Bento, Ribeirinha and Feteira (municipality of Angra do Heroismo).
On the Richter scale, earthquakes are classified by magnitude into micro (less than 2.0), very weak (2.0-2.9), small (3.0-3.9), weak (4.0-4.9), moderate (5.0-5.9). , strong (6.0–6.9), major (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 “degrees of intensity and corresponding description”, and when there is intensity III considered weak, the impact is “felt inside the house” and “hanging objects sway”, feeling “a vibration similar to this”. caused by the passage of heavy vehicles, ”says the website of the Portuguese Institute of the Sea and Atmosphere (IPMA).
Author: Portuguese
Source: CM Jornal
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