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Evaluar si el terremoto de Pohang de 2017 fue un evento inducido
Kwang-Hee Kim1, Jin-Han Ree2, YoungHee Kim3
1Department of Geological Science, Pusan National University, Busan 46241, Republic of Korea. kwanghee@pusan.ac.kr reejh@korea.ac.kr.
Science (New York, N.Y.)
|April 28, 2018
Resumen
El terremoto de Pohang de 2017, el más dañino de Corea del Sur desde 1905, probablemente fue inducido por la inyección de fluidos en un sitio de sistema geotérmico mejorado (EGS). Este evento es el terremoto más grande conocido provocado por las operaciones de EGS.
Área de la Ciencia:
- La geofísica
- Sismología
- Energía geotérmica
Sus antecedentes:
- El terremoto de Pohang de 2017 de magnitud (Mw) 5.4 fue el evento sísmico más dañino en Corea del Sur desde 1905.
- El epicentro del terremoto se localizó debajo de una planta de energía geotérmica mejorada (EGS).
Objetivo del estudio:
- Para investigar la causa del terremoto de Pohang de 2017.
- Para determinar si el terremoto fue inducido por actividades en la planta de energía geotérmica de Pohang.
Principales métodos:
- Análisis de datos geológicos y geofísicos.
- Correlación de la ocurrencia de terremotos con las actividades de inyección de fluidos en el sitio del EGS.
Principales resultados:
- La evidencia geológica y geofísica sugiere que el terremoto fue inducido por la inyección de líquido.
- El fluido fue inyectado directamente en una zona de falla subterránea con estrés crítico.
- El terremoto de Pohang es el terremoto inducido más grande conocido en un sitio de EGS.
Conclusiones:
- El terremoto de Pohang fue probablemente un evento inducido causado por las operaciones de EGS.
- Este hallazgo tiene implicaciones significativas para la seguridad y la regulación de los proyectos de energía geotérmica.
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