Keywords
Seismic energy
Seismic intensity
Subduction
Panama Fracture Zone
Estadísitica sísmica
Energía sísmica
Intensidad sísmica
Subducción
Zona de Fractura de Panamá
How to Cite
Abstract
The National Seismological Network (RSN) located 3745 local earthquakes during 2021, which is equivalent to the seismic energy released by an event of magnitude (Mw) 6.9. The seismicity was mainly located in seven zones with 50-350 earthquakes. There were 209 felt events (~6% of the totality), including 31 with Mw between 5.0 and 6.7. Most of these earthquakes were shallow (~88% < 30 km), had a low magnitude (~52% Mw < 3.9), and were originated in faults within the Caribbean and Panama plates (~69%). The largest earthquake of the year of Mw 6.7 originated in the Panama Fracture Zone, without causing damage or casualties. Because all the earthquakes with Mw ≥ 5.5 were centered offshore and far from the population high intensities were not reported.
References
Adamek, S., Frohlich, C., y Pennington, W. D. (1988). Seismicity of the Caribbean‐Nazca boundary: Constraints on microplate tectonics of the Panama region. Journal of Geophysical Research: Solid Earth, 93(B3), 2053-2075.
Arroyo, I. G., y Linkimer, L. (2021). Geometría de la zona sismogénica interplacas en el sureste de Costa Rica a la luz de la secuencia sísmica de Golfito del 2018. Geofísica Internacional, 60(1), 51-75. doi: 10.22201/igeof.00167169p.2021.60.1.2026
Arroyo, M., Linkimer, L., y Arroyo, I. (2020). Recuento de la sismicidad en Costa Rica durante el 2019. Revista Geológica de América Central, 62, 116-133. doi: 10.15517/rgac.v62i0.40639.
Arroyo, I. G., Husen, S., y Flueh, E.R. (2014). The seismogenic zone in the Central Costa Rican Pacific margin: high-quality hypocentres from an amphibious network. International Journal of Earth Sciences, 103(7), 1747-1764. doi: 10.1007/s00531-013-0955-8
Atkinson, G., y Wald, D. (2007). “Did You Feel It?” intensity data: A surprisingly good measure of earthquake ground motion. Seismological Research Letters, 78(3), 362-368.
DeMets, C., Gordon, R. G., Argus, D. F., y Stein, S. (1994). Effect of recent revisions to the geomagnetic reversal time scale on estimates of current plate motions. Geophysical research letters, 21(20), 2191-2194.
Denyer, P., Montero, W., y Alvarado, G. (2003). Atlas Tectónico de Costa Rica. San José, Costa Rica: Editorial de la Universidad de Costa Rica.
DeShon H.R., Schwartz, S. Y., Newman, A.V., González, V., Protti, M., Dorman, L. M., Dixon, T. H., Sampson, D. E., y Flueh, E. R. (2006). Seismogenic zone structure beneath the Nicoya Peninsula, Costa Rica, from three-dimensional local earthquake P- and S-wave tomography. Geophysical Journal International, 164(1), 109–124. doi: 10.1111/j.1365-246X.2005.02809.x.
Franco, A., Lasserre, D., Lyon-Caen, H., Kostoglodov, V., Molina, E., Guzman-Speziale, M. ... Manea, V. C. (2012). Fault kinematics in northern Central America and coupling along the subduction interface of the Cocos Plate, from GPS data in Chiapas (Mexico), Guatemala and El Salvador. Geophysical Journal International, 189(3), 1223-1236.
Gempa. (2019). SeisComp 3 Real time data acquisition and processing. Potsdam, Alemania: Gempa GmbH. Informe interno.
Havskov, J., Voss, P. H., y Ottemöller, L. (2020). Seismological Observatory Software: 30 Yr of SEISAN. Seismological Research Letters, 91(3): 1846-1852. doi: 10.1785/0220190313
Lienert, B. R., y Havskov, J. (1995). A computer program for locating earthquakes both locally and globally. Seismological Research Letters, 66(5), 26-36.
Linkimer, L., y Alvarado, G. E. (2014). Distribución espacio-temporal de la sismicidad sentida en Costa Rica (1976-2013) en el marco histórico del 30 aniversario (1982-2012) de la Red Sismológica Nacional (RSN: UCR-ICE). Revista Geológica de América Central, Número Especial 30 aniversario, 45-71. doi: 10.15517/rgac.v0i0.16569
Linkimer, L., y Arroyo, I. (2020). Ciencia ciudadana y herramientas de comunicación en la Red Sismológica Nacional de la Universidad de Costa Rica. Revista Comunicación, 29(2), 2-21.
Linkimer L., Arroyo, M., y Arroyo, I. G. (2021). Sismicidad y ruido sísmico en Costa Rica durante la pandemia del año 2020. Revista Geológica de América Central, 64, 1-18. doi: 10.15517/rgac.v0i64.46623
Linkimer, L., Arroyo, I. G., Alvarado, G., Arroyo, M., y Bakkar, H. (2018). The National Seismological Network of Costa Rica (RSN): An Overview and Recent Developments. Seismological Research Letters, 89(2A), 392-398. doi: 10.1785/0220170166.
Lücke, O., y Arroyo, I. G. (2015). Density Structure and Geometry of the Costa Rican Subduction Zone from 3-D Gravity Modeling and Local Earthquake Data. Solid Earth, 6, 1169-1183. doi: 10.5194/se-6-1169-2015.
Marshall, J. S., Fisher, D. M., y Gardner, T. W. (2000). Central Costa Rica deformed belt: Kinematics of diffuse faulting across the western Panama block. Tectonics, 19(3), 468-492.
Matumoto, T., Ohtake, M., Latham, G., y Umana, J. (1977). Crustal structure in Southern Central America. Bulletin of Seismological Society of America, 67, 121-133.
Montero, W. (1989). Sismicidad histórica de Costa Rica 1638–1910. Geofísica Internacional, 28, 531-559.
Montero, W. (2001). Neotectónica de la región central de Costa Rica: frontera oeste de la microplaca de Panamá. Revista Geológica de América Central, 24, 29-56.
Morell, K. D., Fisher, D. M., Gardner, T.W., LaFemina, P. C., Davidson, D., y Teletzke, A. (2011). Quaternary outer fore-arc deformation and uplift inboard of the Panama Triple Junction, Burica Peninsula. Journal of Geophysical Research, 116, B05402. doi: 10.1029/2010JB007979.
Peraldo, G., y Montero, W. (1994). Temblores del periodo colonial de Costa Rica (Primera ed.). Cartago, Costa Rica: Editorial Tecnológica.
Porras, J. L. Linkimer, L., Araya, C., Arroyo, M., Taylor, M., y Rojas, W. (2017). Sismicidad registrada por la RSN en el 2016. Revista Geológica de América Central, 56, 117-128, 2017. doi: 10.15517/rgac.v0i56.29239
Porras, J. L., Linkimer, L., Arroyo, I., Arroyo, M., y Taylor, M. (2018). Actividad sísmica percibida en Costa Rica durante el 2017. Revista Geológica de América Central, 58: 203-2014. doi: 10.15517/rgac.v58i0.32852
Porras, J. L., Linkimer, L., Arroyo, I., Arroyo, M., Taylor, M., y Fallas, C. (2019). La sismicidad del 2018 en Costa Rica. Revista Geológica de América Central, 60, 133-144. doi: 10.15517/rgac.v2019i60.36468.
Snoke, J., Munsey, J., Teague, A., y Bollinger, G. (1984). A program for focal mechanism determination by combined use of polarity and Sv-P amplitude ratio data. Earthquake Notes, 55, 15-20.
Stein, S., y Wysession, M. (2003). An introduction to Seismology, earthquakes, and earth structure. Malden, Estados Unidos: Blackwell Publishing.
Wald, D. J., Quitoriano, V., Heaton, T. H., Kanamori, H., Scrivner, C. W., y Worden, C. B. (1999). TriNet “ShakeMaps”: Rapid generation of peak ground motion and intensity maps for earthquakes in southern California. Earthquake Spectra, 15(3), 537-555.
Wald, D. J., Wald, L., Worden, B., y Goltz, J. (2003). ShakeMap, a tool for earthquake response. U.S. Geological Survey Fact Sheet 087-03. Recuperado de https://pubs.usgs.gov/fs/fs-087-03/FS-087-03-508.pdf
Wald, D. J., Quitoriano, V., Worden, C. B., Hopper, M., y Dewey, J. W. (2011). USGS “Did You Feel It?” Internet-based Macroseismic Intensity Maps. Annals of Geophysics, 54(6), 688-707. doi: 10.4401/ag-5354.
Zhao, J. X., Zhang, J., Asano, A., Ohno, Y., Oouchi, T., Takahashi, T., y Fukushima, Y. (2006). Attenuation relations of strong ground motion in Japan using site classification based on predominant period. Bulletin of the Seismological Society of America, 96(3), 898-913.
Comments
This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License.
Copyright (c) 2023 Lepolt Linkimer, Carolina Fallas, Ivonne G. Arroyo