Revista geológica de América central ISSN Impreso: 0256-7024 ISSN electrónico: 2215-261X

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Vol. 60 (2019), Notas Técnicas

The 2018 seismicity of Costa Rica

Notas Técnicas

https://doi.org/10.15517/rgac.v2019i60.36468

Published March 9, 2019

Juan L. Porras⁺⁻
Lepolt Linkimer⁺⁻
Ivonne G. Arroyo⁺⁻
Magda Taylor⁺⁻
Carolina Fallas⁺⁻

Juan L. Porras

Red Sismológica Nacional

Lepolt Linkimer

Red Sismológica Nacional

Ivonne G. Arroyo

Red Sismológica Nacional

Magda Taylor

Red Sismológica Nacional

Carolina Fallas

Red Sismológica Nacional

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Porras, J. L., Linkimer, L., Arroyo, I. G., Taylor, M., & Fallas, C. (2019). The 2018 seismicity of Costa Rica. Revista geológica De América Central, 60, 125–136. https://doi.org/10.15517/rgac.v2019i60.36468

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Abstract

During 2018 the National Seismological Network (RSN: UCR-ICE) located 3105 earthquakes, 2659 of them originated within Costa Rica. From the total located events, 278 (~10%) were felt earthquakes, including four significant earthquakes with magnitudes Mw between 5.7 and 6.2. The majority (92%) of the felt earthquakes were shallow (< 30 km) and 64 % had low magnitudes (Mw < 3.9). Local and regional faulting caused 64 % of the felt earthquakes and the remaining were originated by the subduction of the Cocos Plate. The geographic areas with the highest seismicity were located near Tenorio Volcano, and an area between Cartago and San Marcos de Tarrazú, and the Dulce Gulf. The highest Modified Mercalli intensity observed was VI, caused by the Golfito (6.2 Mw) earthquake.

https://doi.org/10.15517/rgac.v2019i60.36468

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