Complex rupture of the M6.3 2015 March 10 Bucaramanga earthquake: Evidence of strong weakening process

P. Poli; G. A. Prieto; C. Q. Yu; M. Florez; H. Agurto-Detzel; T. D. Mikesell; G. Chen; V. Dionicio; P. Pedraza

doi:10.1093/gji/ggw065

Complex rupture of the M6.3 2015 March 10 Bucaramanga earthquake: Evidence of strong weakening process

Título traducido de la contribución: Compleja ruptura del M6.3 10 de marzo de 2015 Terremoto de Bucaramanga: Evidencia de un fuerte proceso de debilitamiento

P. Poli, G. A. Prieto, C. Q. Yu, M. Florez, H. Agurto-Detzel, T. D. Mikesell, G. Chen, V. Dionicio, P. Pedraza

Producción científica: Contribución a una revista › Artículo › revisión exhaustiva

14 Citas (Scopus)

Resumen

Resumen: Utilizamos ondas sísmicas para un terremoto de magnitud 6,3 de profundidad intermedia (160 km) en el Nido de Bucaramanga, Colombia, para inferir un complejo proceso de ruptura con dos etapas distintas, caracterizado por diferentes velocidades de ruptura posiblemente controladas por la evolución de la fuerza en la falla. Nuestro procesamiento de datos integrado permitió caracterizar con precisión la ruptura multietapa y la presencia de un fuerte evento de debilitamiento. La radiación sísmica resultante se interpreta como el resultado de un debilitamiento extremo debido a una fuga de cizallamiento térmico en cascada, con un proceso inicial de radiación ineficiente seguido de una ruptura rápida y dinámica eficiente. Nuestros resultados implican una complejidad dinámica de la ruptura sísmica en las profundidades de la Tierra, y pueden ayudar a dar nuevas perspectivas sobre el mecanismo físico de los terremotos de profundidad intermedia.

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Título traducido de la contribución	Compleja ruptura del M6.3 10 de marzo de 2015 Terremoto de Bucaramanga: Evidencia de un fuerte proceso de debilitamiento
Idioma original	Inglés estadounidense
Páginas (desde-hasta)	988-994
Número de páginas	7
Publicación	Geophysical Journal International
Volumen	205
N.º	2
DOI	https://doi.org/10.1093/gji/ggw065
Estado	Publicada - may. 1 2016

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title = "Complex rupture of the M6.3 2015 March 10 Bucaramanga earthquake: Evidence of strong weakening process",

abstract = "{\textcopyright} The Authors 2016.Summary: We use seismic waves for a magnitude 6.3 intermediate-depth (160 km) earthquake in the Bucaramanga Nest, Colombia, to infer a complex rupture process with two distinct stages, characterized by different rupture velocities possibly controlled by the evolution of strength on the fault. Our integrated data processing permitted to precisely characterize the multistage rupture and the presence of a strong weakening event. The resulting seismic radiation is interpreted as resulting from an extreme weakening due to a cascading thermal shear runaway, with an initial inefficient radiation process followed by a fast and dynamic efficient rupture. Our results imply dynamic complexity of the seismic rupture deep inside the Earth, and may help to give some new insights about the physical mechanism of intermediate-depth earthquakes.",

author = "P. Poli and Prieto, {G. A.} and Yu, {C. Q.} and M. Florez and H. Agurto-Detzel and Mikesell, {T. D.} and G. Chen and V. Dionicio and P. Pedraza",

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T1 - Complex rupture of the M6.3 2015 March 10 Bucaramanga earthquake: Evidence of strong weakening process

AU - Poli, P.

AU - Prieto, G. A.

AU - Yu, C. Q.

AU - Florez, M.

AU - Agurto-Detzel, H.

AU - Mikesell, T. D.

AU - Chen, G.

AU - Dionicio, V.

AU - Pedraza, P.

PY - 2016/5/1

Y1 - 2016/5/1

N2 - © The Authors 2016.Summary: We use seismic waves for a magnitude 6.3 intermediate-depth (160 km) earthquake in the Bucaramanga Nest, Colombia, to infer a complex rupture process with two distinct stages, characterized by different rupture velocities possibly controlled by the evolution of strength on the fault. Our integrated data processing permitted to precisely characterize the multistage rupture and the presence of a strong weakening event. The resulting seismic radiation is interpreted as resulting from an extreme weakening due to a cascading thermal shear runaway, with an initial inefficient radiation process followed by a fast and dynamic efficient rupture. Our results imply dynamic complexity of the seismic rupture deep inside the Earth, and may help to give some new insights about the physical mechanism of intermediate-depth earthquakes.

AB - © The Authors 2016.Summary: We use seismic waves for a magnitude 6.3 intermediate-depth (160 km) earthquake in the Bucaramanga Nest, Colombia, to infer a complex rupture process with two distinct stages, characterized by different rupture velocities possibly controlled by the evolution of strength on the fault. Our integrated data processing permitted to precisely characterize the multistage rupture and the presence of a strong weakening event. The resulting seismic radiation is interpreted as resulting from an extreme weakening due to a cascading thermal shear runaway, with an initial inefficient radiation process followed by a fast and dynamic efficient rupture. Our results imply dynamic complexity of the seismic rupture deep inside the Earth, and may help to give some new insights about the physical mechanism of intermediate-depth earthquakes.

U2 - 10.1093/gji/ggw065

DO - 10.1093/gji/ggw065

M3 - Article

SN - 0956-540X

VL - 205

SP - 988

EP - 994

JO - Geophysical Journal International

JF - Geophysical Journal International

IS - 2

ER -

Complex rupture of the M6.3 2015 March 10 Bucaramanga earthquake: Evidence of strong weakening process

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