Keywords
Seismicity in 2015
Costa Rican seismic sources
felt earthquakes
seismology
earthquakes
Sismicidad del 2015
fuentes sísmicas de Costa Rica
sismos percibidos
sismología
sismos
Costa Rican seismic sources
felt earthquakes
seismology
earthquakes
Sismicidad del 2015
fuentes sísmicas de Costa Rica
sismos percibidos
sismología
sismos
How to Cite
Porras, J. L., Linkimer, L., Araya, M. C., Rojas, W., Taylor, M., & Barquero, R. (2016). Seismicity in Costa Rica during 2015. Revista geológica De América Central, 54. https://doi.org/10.15517/rgac.v54i0.23284
Abstract
During 2015, the National Seismological Network (RSN: UCR-ICE) located 6989 earthquakes and reported 168 felt events. There were 13 significant earthquakes with magnitude Mw > 5.0. The majority (86%) of felt earthquakes were shallow (< 30 km) and 81% had magnitudes (Mw) between 3.0 and 4.9. Local and regional faulting caused 61% of the felt earthquakes and the subduction of the Cocos Plate caused 37%. The geographic areas with the highest seismicity during 2015 were the Guanacaste and Central volcanic cordilleras, Los Santos region, and an area offshore the Nicoya peninsula. The highest intensity observed in Costa Rica during 2015 was V+ (Modified Mercalli).References
ADAMEK, S., FROHLICH, C. & PENNINGTON, W., 1988: Seismicity of the Caribbean-Nazca Boundary Constraints on Microplate Tectonics of the Panama Region.- J. Geophys. Res. 93, 2053-2075.
LIENERT, B. R. & HAVSKOV, J., 1995: A Computer Program for Locating Earthquakes Both Locally and Globally.- Seis. Res. Lett. 66: 26-36, DOI:10.1785/gssrl.66.5.26
MARSHALL, J. S., FISHER, D. M. & GARDNER, T. W., 2000: Central Costa Rica deformed belt: Kinematics of diffuse faulting across the western Panama block.- Tectonics, 19, 468-492.
OTTEMÖLLER, L., VOSS, P. & HAVSKOV, J., 2011: SEISAN: the Earthquake Analysis Software for Windows, Solaris, LINUX, and MACOSX, version 9.0.1. 361 págs. University of Bergen, Bergen, Noruega.
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