Zoning of Ecuador According to Maximum Magnitudes of Earthquakes and their Frequency of Occurrence using Statistical Models Estimated by Maximum Likelihood
Zones 1 (portions of Esmeraldas and Manabí and their respective maritime zones) and 5 (north central of Ecuador) were the most representative in terms of recurrence and seismic magnitudes.
📌 3 Key Takeaways
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Objective & Hypothesis:This work applied the extreme value theory and Poisson regression considering maximum likelihood estimates to characterize the 5 seismicity zones of Ecuador obtained through cluster analysis.
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Key Findings & Data:The Gumbel model was optimal in describing maximum magnitudes in these areas.
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Conclusion & Impact:Zones 1 (portions of Esmeraldas and Manabí and their respective maritime zones) and 5 (north central of Ecuador) were the most representative in terms of recurrence and seismic magnitudes.
🔬Design:Modeling & Simulation
📍Scope:Comprehensive Sample
⚙️Variables:Seismic recurrence time · Extreme values · Peaks-over-Threshold
Abstract
This work applied the extreme value theory and Poisson regression considering maximum likelihood estimates to characterize the 5 seismicity zones of Ecuador obtained through cluster analysis. The Gumbel model was optimal in describing maximum magnitudes in these areas. The Poisson regression model was used to estimate the frequency of earthquakes as a function of magnitude (MW) for each zone. Zones 1 (portions of Esmeraldas and Manabí and their respective maritime zones) and 5 (north central of Ecuador) were the most representative in terms of recurrence and seismic magnitudes.
GARCIA-BUSTOS, S., NAVARRETE, S., CHANCAY, Á., MENDOZA, M., PINCAY, M., TERAN, M. (2022). Zoning of Ecuador According to Maximum Magnitudes of Earthquakes and their Frequency of Occurrence using Statistical Models Estimated by Maximum Likelihood. Gazi University Journal of Science, Cilt: 34 - Sayı: 3, 916–935. https://ajindex.com/articles/650888
Nocquet, J., Mothes, P., and Alvarado, A., “Geodesia, geodinámica y ciclo sísmico en Ecuador”, Geología y Geofísica Marina y Terrestre Del Ecuador (Comisión Nacional del Derecho del Mar, Ecuador), 83-94, (2009)
Witt, C., and Bourgois, J., “Relaciones entre la evolución de la cuenca del Golfo de Guayaquil-Tumbes y el escape del Bloque Nor-Andino”, Geología y Geofísica Marina y Terrestre Del Ecuador (Comisión Nacional del Derecho del Mar, Ecuador), 95-106, (2009)
Segovia, M., and Alvarado, A., “Breve análisis de la sismicidad y del campo de esfuerzos en el Ecuador”, Geología y Geofísica Marina y Terrestre Del Ecuador (Comisión Nacional del Derecho del Mar, Ecuador), 131-149, (2009)
Vaca, S., Régnier, M., Bethoux, N., Álvarez, V. and Pontoise, B, “Sismicidad de la región de Manta: Enjambre sísmico de Manta-2005”, Geología y Geofísica Marina y Terrestre Del Ecuador (Comisión Nacional del Derecho del Mar, Ecuador), 151-166, (2009)
CEC, “Requisitos generales de diseño: peligro sísmico, espectros de diseño y requisitos mínimos de cálculos para diseño sismo resistente”, Código Ecuatoriano de la Construcción. Registro Oficial No. 382, (2001)
Bakun, W. H., and Wentworth, C. M., “Erratum to Estimating earthquake locations and magnitude from seismic intensity data”, Bulletin of the Seismological Society of America., 89: 557, (1999)
NEC-15, “Norma Ecuatoriana de la Construcción”, Registro Oficial No. 413 del 10 de enero de 2015, recovered from http://www.normaconstruccion.ec/ [Access date: 1 December 2019], (2015)
Parra, H., Benito, M., and Gaspar-Escribano, J, “Seismic hazard assessment in continental Ecuador”, Bullentin of Earthquake Engineering, 14(8): 2129-2159, (2016)
Beauval, C., Mariniére, J., Yepez, H., Audin, L., Nocquet, J., Alvarado, A., Baize, S., Aguilar, J., Singaucho, J. and Jomard, H., “A New Seismic Hazard Model for Ecuador”, Bulletin of The Seismological Society