Artículos científicos
San Gabriel earthquake, July 27, 2018 (Ml 4.6): seismic source parameters and the seismic context of the southwestern region of the Central Valley of Costa Rica
Daniela Campos-Durán- Ronnie Quintero-Quintero
- Juan Segura-Torres
Published 2021-09-30
Keywords
- Costa Rica,
- San Gabriel earthquake,
- Moment tensor,
- Aftershocks
How to Cite
Campos-Durán, D., Quintero-Quintero, R., & Segura-Torres, J. (2021). San Gabriel earthquake, July 27, 2018 (Ml 4.6): seismic source parameters and the seismic context of the southwestern region of the Central Valley of Costa Rica. Boletín De Geología, 43(3), 165–178. https://doi.org/10.18273/revbol.v43n3-2021008
Copyright (c) 2021 Boletín de Geología
This work is licensed under a Creative Commons Attribution 4.0 International License.
Altmetrics
Abstract
In this research the seismic source parameters of the earthquake that occurred on July 27, 2018, at 17:50:46 (UTC time) in San Gabriel de Aserrí (latitude 9.788, longitude -84.101) are characterized and analyzed. The parameters show that the event had a depth of 15 km and Ml 4.6. The distribution of localized seismicity and a focal mechanism solution indicates that it probably occurred on a right-lateral strike-slip fault with a small normal component, strike NNW, high dip angle ~77°, dipping to the NE (strike 326°/dip 77°/slip -165°). The focal mechanism is consistent with those of previous seismicity located in the area and they indicate transtensional deformation in the central forearc of the country, known as the Central Costa Rica Deformed Belt. The instrumental intensities, obtained from the acceleration (% g) recorded in the seismic stations, allowed to identify in the Modified Mercalli Intensity scale (MMI) maximum instrumental intensities of IV in communities such as San Gabriel de Aserrí, San Pablo de León Cortés, and San Marcos de Tarrazú.
Downloads
Download data is not yet available.
References
Arias, O.; Denyer, P. (1991). Aspectos neotectónicos y geológicos de Puriscal y alrededores, Costa Rica. Revista Geológica de América Central, 12, 83-95. https://doi.org/10.15517/RGAC.V0I12.13046
Barquero, R.; Rojas, W.; Climent, A. (1989). El temblor del 26 de febrero de 1989: Informe sismológico y análisis preliminar de acelerogramas de la presa San Miguel. Instituto Costarricense de Electricidad.
Campos-Durán, D.; Quintero-Quintero, R. (2020). Intensidades macrosísmicas del sismo de Capellades del 30 de noviembre de 2016 (Mw = 5,4) y el contexto sísmico de la región central de Costa Rica. Boletín de Geología, 42(1), 57-68. https://doi.org/10.18273/revbol.v42n1-2020003
Carvalho, J.; Barros, L.; Zahradnik, J. (2019). Inversion for focal mechanisms using waveform envelopes and inaccurate velocity models: Examples from Brazil. Bulletin of the Seismological Society of America, 109(1), 138-151. https://doi.org/10.1785/0120180119
Ci Neo, J.; Huang, Y.; Yao, D.; Wei, S. (2021). Is the aftershock zone area a Good Proxy for the Mainshock Rupture Area? Bulletin of the Seismological Society of America, 111(1), 424-438. https://doi.org/10.1785/0120190200
Denyer, P.; Montero, W.; Alvarado, G.E. (2009). Atlas Tectónico de Costa Rica. Editorial Universidad de Costa Rica.
Fan, C.; Pavlis, G.; Tuncay, K. (2006). GCLgrid: A three-dimensional geographical curvilinear grid library for computational seismology. Computers & Geosciences, 32(3), 371-381. https://doi.org/10.1016/j.cageo.2005.07.001
Fernández, M.; Rojas, W. (2001). Amenaza sísmica y tsunamis en el territorio de Costa Rica. Editorial Universidad de Costa Rica.
GCMT. (2019). Global CMT Catalog Search. Global Centroid Moment Tensor. http://www.globalcmt.org/CMTsearch.html
Güendel, F. (1989). Secuencia sísmica de El Alto del Aguacate, febrero y marzo de 1989. OVSICORIUNA, Catálogo de Temblores 1989, 155161.
Havskov, J.; Ottemoller, L. (1999). SeisAn Earthquake analysis software. Seismological Research Letters, 70(5), 532-534. https://doi.org/10.1785/gssrl.70.5.532
Kobayashi, D.; LaFemina, P.; Geirsson, H.; Chichaco, E.; Abrego, A.; Mora, H.; Camacho, E. (2014). Kinematics of the western Caribbean: Collision of the Cocos Ridge and upper plate deformation. Geochemistry, Geophysics, Geosystems, 15(5), 1671-1683. https://doi.org/10.1002/2014GC005234
Lewis, C.; Boozer, C.; López, A.; Montero, W. (2008). Collision versus sliver transport in the hanging wall at the Middle America subduction zone: Constraints from background seismicity in central Costa Rica. Geochemistry, Geophysics, Geosystems, 9(7). https://doi.org/10.1029/2007GC001711
López, A. (2012). Andersonian and Coulomb stresses in Central Costa Rica and its fault slip tendency potential: new insights into their associated seismic hazard. Geological Society, London, Special Publications, 367, 19-38. https://doi.org/10.1144/SP367.3
Marshall, J.; Fisher, M.; Gardner, T. (2000). Central Costa Rica deformed belt: kinematics of diffuse faulting across the western Panama block. Tectonics, 19(3), 468-492. https://doi.org/10.1029/1999TC001136
Montero, W.; Alvarado, G.E. (1995). El terremoto de Patillos del 30 de diciembre de 1952 (Ms= 5,9) y el contexto neotectónico de la región del volcán Irazú, Costa Rica. Revista Geológica de América Central, 18, 25-42. https://doi.org/10.15517/rgac.v0i18.13522
Montero, W. (1999). El terremoto del 4 de marzo de 1924 (Ms 7,0): ¿Un gran temblor intraplaca relacionado al límite incipiente entre la placa Caribe y la microplaca Panamá? RevistaGeológica de América Central, 22, 25-62. https://doi.org/10.15517/RGAC.V0I22.8586
Montero, W.; Rojas, W. (2014). Las fallas Purires y Picagres, y su relación con la secuencia sísmica del Puriscal de 1990. Revista Geológica de América Central, 50, 39-69. https://doi.org/10.15517/RGAC.V0I50.15107
Montero, W.; Linkimer, L.; Rojas, W. (2016). El sistema de Fallas Navarro: desplazamientos izquierdos a lo largo del cinturón deformado del centro de Costa Rica. Revista Geológica de América Central, 55, 71-100. https://doi.org/10.15517/RGAC.V55I0.27062
Norabuena, E.; Dixon, T.; Schwartz, S.; DeShon, H.; Newman, A.; Protti, M.; González, V.; Doramn, L.; Flueh, E.; Lundgren, P.; Pollitz, F.; Sampson, D. (2004). Geodetic and seismic constraints on some seismogenic zone processes in Costa Rica. Journal of Geophysical Research: Solid Earth, 109(B11). https://doi.org/10.1029/2003JB002931
Pacheco, J.; Quintero, R.; Vega, F.; Segura, J.; Jiménez, W.; González, V. (2006). The Mw 6.4 Damas, Costa Rica, earthquake of 20 November 2004: Aftershocks and slip distribution. Bulletin of the Seismological Society of America, 96(4A), 1332-1343. https://doi.org/10.1785/0120050261
Rojas, W.; Lindholm, C.; Bungum, H.; Boschini, L.; Climent, A.; Barquero, R.; Alvarado, G.; Soto, G.; Montero, W.; Fernández, M.; Protti, M.; Moya, A.; Esquivel, L.; Schmidt, V. (1998). Seismic hazard analysis for the Metropolitan Area of the Central Valley, Costa Rica. Technical Report, NORSAR, Norway.
RSN-UCR. (2014). Informe del sismo 7 de agosto del 2014, 2:50 am., Mag: 4,6 Mw, SENTIDO. Red Sismológica Nacional de la Universidad de Costa Rica. https://rsn.ucr.ac.cr/actividad-sismica/ultimos-sismos/2285-sismo-07-de-agosto-del-2014-2-50-am-mw-4-6
RSN-UCR. (2015). Terremoto de Frailes, 9 de agosto de 1991. Red sismológica Nacional de la Universidad de Costa Rica. https://rsn.ucr.ac.cr/documentos/educativos/vulcanologia/26-sismologia/sismos-historicos/3236-terremoto-defrailes-9-de-agosto-de-1991
Shimazaki, K. (1986). Small and large earthquakes: The effects of the thickness of seismogenic layer and the free surface. In: S. Das, J. Boatwright, C. Scholz (eds.). Earthquake Source Mechanics (pp. 209-216). Vol. 37. American Geophysical Union. https://doi.org/10.1029/GM037p0209
Sokos, E.; Zahradnik, J. (2008). ISOLA a Fortran code and a Matlab GUI to perform multiple-point source inversion of seismic data. Computers and Geosciences, 34(8), 967-977. https://doi.org/10.1016/j.cageo.2007.07.005
Sokos, E.; Zahradnik, J. (2013). Evaluating centroid-moment-tensor uncertainty in the new version of ISOLA software. Seismological Research Letters, 84(4), 656-665. https://doi.org/10.1785/0220130002
Quintero-Quintero, R.; Porras-Espinoza, H. (2018). Recurrencia de sismos en el Valle Central de Costa Rica. Revista Geográfica de América Central, 4(61E), 63-80. https://doi.org/10.15359/rgac.61-4.3
Quintero, R.; Kissling, E. (2001). An improved P-wave velocity reference model for Costa Rica. Geofísica Internacional, 40(1), 3-19.
UNAVCO. (2020). Plate Motion Calculator. https://www.unavco.org/software/geodetic-utilities/plate-motion-calculator/plate-motion-calculator.html#references
Wald, D.; Worden, B.; Quitoriano, V.; Pankow, K. (2006). ShakeMap manual: technical manual, user’s guide, and software guide. U.S. Geological Survey.
Wells, D.; Coppersmith, K. (1994). New empirical relationship among magnitude, rupture length, rupture width, rupture area, and surface displacement. Bulletin of the Seismological Society of America, 84(4), 974-1002.
Wessel, P.; Luis, J.F.; Uieda, L.; Scharroo, R.; Wobbe, F.; Smith, W.H.F.; Tian, D. (2019). The Generic Mapping Tools version 6. Geochemistry, Geophysics, Geosystems, 20(11), 5556-5564. https://doi.org/10.1029/2019GC008515
Zahradnik, J.; Sokos, E. (2018). Fitting waveform envelopes to derive focal mechanisms of moderate earthquakes. Seismological Research Letters, 89(3), 1137-1145. https://doi.org/10.1785/0220170161
Zimmermann, B. (2009). Earthquake Focal Mechanism. Wolfram Demonstrations Project. http://demonstrations.wolfram.com/EarthquakeFocalMechanism/
Barquero, R.; Rojas, W.; Climent, A. (1989). El temblor del 26 de febrero de 1989: Informe sismológico y análisis preliminar de acelerogramas de la presa San Miguel. Instituto Costarricense de Electricidad.
Campos-Durán, D.; Quintero-Quintero, R. (2020). Intensidades macrosísmicas del sismo de Capellades del 30 de noviembre de 2016 (Mw = 5,4) y el contexto sísmico de la región central de Costa Rica. Boletín de Geología, 42(1), 57-68. https://doi.org/10.18273/revbol.v42n1-2020003
Carvalho, J.; Barros, L.; Zahradnik, J. (2019). Inversion for focal mechanisms using waveform envelopes and inaccurate velocity models: Examples from Brazil. Bulletin of the Seismological Society of America, 109(1), 138-151. https://doi.org/10.1785/0120180119
Ci Neo, J.; Huang, Y.; Yao, D.; Wei, S. (2021). Is the aftershock zone area a Good Proxy for the Mainshock Rupture Area? Bulletin of the Seismological Society of America, 111(1), 424-438. https://doi.org/10.1785/0120190200
Denyer, P.; Montero, W.; Alvarado, G.E. (2009). Atlas Tectónico de Costa Rica. Editorial Universidad de Costa Rica.
Fan, C.; Pavlis, G.; Tuncay, K. (2006). GCLgrid: A three-dimensional geographical curvilinear grid library for computational seismology. Computers & Geosciences, 32(3), 371-381. https://doi.org/10.1016/j.cageo.2005.07.001
Fernández, M.; Rojas, W. (2001). Amenaza sísmica y tsunamis en el territorio de Costa Rica. Editorial Universidad de Costa Rica.
GCMT. (2019). Global CMT Catalog Search. Global Centroid Moment Tensor. http://www.globalcmt.org/CMTsearch.html
Güendel, F. (1989). Secuencia sísmica de El Alto del Aguacate, febrero y marzo de 1989. OVSICORIUNA, Catálogo de Temblores 1989, 155161.
Havskov, J.; Ottemoller, L. (1999). SeisAn Earthquake analysis software. Seismological Research Letters, 70(5), 532-534. https://doi.org/10.1785/gssrl.70.5.532
Kobayashi, D.; LaFemina, P.; Geirsson, H.; Chichaco, E.; Abrego, A.; Mora, H.; Camacho, E. (2014). Kinematics of the western Caribbean: Collision of the Cocos Ridge and upper plate deformation. Geochemistry, Geophysics, Geosystems, 15(5), 1671-1683. https://doi.org/10.1002/2014GC005234
Lewis, C.; Boozer, C.; López, A.; Montero, W. (2008). Collision versus sliver transport in the hanging wall at the Middle America subduction zone: Constraints from background seismicity in central Costa Rica. Geochemistry, Geophysics, Geosystems, 9(7). https://doi.org/10.1029/2007GC001711
López, A. (2012). Andersonian and Coulomb stresses in Central Costa Rica and its fault slip tendency potential: new insights into their associated seismic hazard. Geological Society, London, Special Publications, 367, 19-38. https://doi.org/10.1144/SP367.3
Marshall, J.; Fisher, M.; Gardner, T. (2000). Central Costa Rica deformed belt: kinematics of diffuse faulting across the western Panama block. Tectonics, 19(3), 468-492. https://doi.org/10.1029/1999TC001136
Montero, W.; Alvarado, G.E. (1995). El terremoto de Patillos del 30 de diciembre de 1952 (Ms= 5,9) y el contexto neotectónico de la región del volcán Irazú, Costa Rica. Revista Geológica de América Central, 18, 25-42. https://doi.org/10.15517/rgac.v0i18.13522
Montero, W. (1999). El terremoto del 4 de marzo de 1924 (Ms 7,0): ¿Un gran temblor intraplaca relacionado al límite incipiente entre la placa Caribe y la microplaca Panamá? RevistaGeológica de América Central, 22, 25-62. https://doi.org/10.15517/RGAC.V0I22.8586
Montero, W.; Rojas, W. (2014). Las fallas Purires y Picagres, y su relación con la secuencia sísmica del Puriscal de 1990. Revista Geológica de América Central, 50, 39-69. https://doi.org/10.15517/RGAC.V0I50.15107
Montero, W.; Linkimer, L.; Rojas, W. (2016). El sistema de Fallas Navarro: desplazamientos izquierdos a lo largo del cinturón deformado del centro de Costa Rica. Revista Geológica de América Central, 55, 71-100. https://doi.org/10.15517/RGAC.V55I0.27062
Norabuena, E.; Dixon, T.; Schwartz, S.; DeShon, H.; Newman, A.; Protti, M.; González, V.; Doramn, L.; Flueh, E.; Lundgren, P.; Pollitz, F.; Sampson, D. (2004). Geodetic and seismic constraints on some seismogenic zone processes in Costa Rica. Journal of Geophysical Research: Solid Earth, 109(B11). https://doi.org/10.1029/2003JB002931
Pacheco, J.; Quintero, R.; Vega, F.; Segura, J.; Jiménez, W.; González, V. (2006). The Mw 6.4 Damas, Costa Rica, earthquake of 20 November 2004: Aftershocks and slip distribution. Bulletin of the Seismological Society of America, 96(4A), 1332-1343. https://doi.org/10.1785/0120050261
Rojas, W.; Lindholm, C.; Bungum, H.; Boschini, L.; Climent, A.; Barquero, R.; Alvarado, G.; Soto, G.; Montero, W.; Fernández, M.; Protti, M.; Moya, A.; Esquivel, L.; Schmidt, V. (1998). Seismic hazard analysis for the Metropolitan Area of the Central Valley, Costa Rica. Technical Report, NORSAR, Norway.
RSN-UCR. (2014). Informe del sismo 7 de agosto del 2014, 2:50 am., Mag: 4,6 Mw, SENTIDO. Red Sismológica Nacional de la Universidad de Costa Rica. https://rsn.ucr.ac.cr/actividad-sismica/ultimos-sismos/2285-sismo-07-de-agosto-del-2014-2-50-am-mw-4-6
RSN-UCR. (2015). Terremoto de Frailes, 9 de agosto de 1991. Red sismológica Nacional de la Universidad de Costa Rica. https://rsn.ucr.ac.cr/documentos/educativos/vulcanologia/26-sismologia/sismos-historicos/3236-terremoto-defrailes-9-de-agosto-de-1991
Shimazaki, K. (1986). Small and large earthquakes: The effects of the thickness of seismogenic layer and the free surface. In: S. Das, J. Boatwright, C. Scholz (eds.). Earthquake Source Mechanics (pp. 209-216). Vol. 37. American Geophysical Union. https://doi.org/10.1029/GM037p0209
Sokos, E.; Zahradnik, J. (2008). ISOLA a Fortran code and a Matlab GUI to perform multiple-point source inversion of seismic data. Computers and Geosciences, 34(8), 967-977. https://doi.org/10.1016/j.cageo.2007.07.005
Sokos, E.; Zahradnik, J. (2013). Evaluating centroid-moment-tensor uncertainty in the new version of ISOLA software. Seismological Research Letters, 84(4), 656-665. https://doi.org/10.1785/0220130002
Quintero-Quintero, R.; Porras-Espinoza, H. (2018). Recurrencia de sismos en el Valle Central de Costa Rica. Revista Geográfica de América Central, 4(61E), 63-80. https://doi.org/10.15359/rgac.61-4.3
Quintero, R.; Kissling, E. (2001). An improved P-wave velocity reference model for Costa Rica. Geofísica Internacional, 40(1), 3-19.
UNAVCO. (2020). Plate Motion Calculator. https://www.unavco.org/software/geodetic-utilities/plate-motion-calculator/plate-motion-calculator.html#references
Wald, D.; Worden, B.; Quitoriano, V.; Pankow, K. (2006). ShakeMap manual: technical manual, user’s guide, and software guide. U.S. Geological Survey.
Wells, D.; Coppersmith, K. (1994). New empirical relationship among magnitude, rupture length, rupture width, rupture area, and surface displacement. Bulletin of the Seismological Society of America, 84(4), 974-1002.
Wessel, P.; Luis, J.F.; Uieda, L.; Scharroo, R.; Wobbe, F.; Smith, W.H.F.; Tian, D. (2019). The Generic Mapping Tools version 6. Geochemistry, Geophysics, Geosystems, 20(11), 5556-5564. https://doi.org/10.1029/2019GC008515
Zahradnik, J.; Sokos, E. (2018). Fitting waveform envelopes to derive focal mechanisms of moderate earthquakes. Seismological Research Letters, 89(3), 1137-1145. https://doi.org/10.1785/0220170161
Zimmermann, B. (2009). Earthquake Focal Mechanism. Wolfram Demonstrations Project. http://demonstrations.wolfram.com/EarthquakeFocalMechanism/