Repositorio UFRO · Omeka S

Persistent shallow micro-seismicity at Llaima volcano, Chile, with implications for long-term monitoring

Primer Autor	Lamb, Oliver D.
Co-autores	Lees, Jonathan M. Franco-Marin, Luis Lazo, Jonathan Rivera, Andres Shore, Michael J. Lee, Stephen J.
Título	Persistent shallow micro-seismicity at Llaima volcano, Chile, with implications for long-term monitoring
Editorial	ELSEVIER
Revista	JOURNAL OF VOLCANOLOGY AND GEOTHERMAL RESEARCH
Lenguaje	en
Resumen	Identifying the source mechanisms of low-frequency earthquakes at ice-covered volcanoes can be challenging due to overlapping characteristics of glacially and magmatically derived seismicity. Here we present an analysis of two months of seismic data from Llaima volcano, Chile, recorded by the permanent monitoring network in 2019. We find over 2000 repeating low-frequency events split across 82 families, the largest of which contains over 200 events. Estimated locations for the largest families indicate shallow sources directly beneath or near the edge of glaciers around the summit vent. These low-frequency earthquakes are part of an annual cycle in activity at the volcano that is strongly correlated with variations in atmospheric temperature, leading us to conclude that meltwater from ice and snow strongly affects the seismic source mechanisms related to glacier dynamics and shallow volcanic processes. The results presented here should inform future assessments of eruptive potential at Llaima volcano, as well as other ice-covered volcanoes in Chile and worldwide.
Tipo de Recurso	artículo original
doi	10.1016/j.jvolgeores.2022.107528
Formato Recurso	PDF
Palabras Claves	Volcano-seismology Cryoseismology Llaima volcano Volcano monitoring STICK-SLIP ICEQUAKES MOUNT ST-HELENS PERIOD EVENTS EARTHQUAKES ERUPTION GLACIER PRECURSORS DYNAMICS CHANNELS INSIGHTS
Ubicación del archivo	http://dx.doi.org/10.1016/j.jvolgeores.2022.107528
Categoría OCDE	Geociencias Multidisciplinario
Materias	Volcano-sismología Criosismología Volcán Llaima Monitoreo de volcanes TERREMOTOS DE HIELO DESLIZANTES MONTE ST-HELENS EVENTOS DEL PERIODO TERREMOTOS ERUPCIÓN GLACIAR PRECURSORES DINÁMICA CANALES INSIGHTS
Disciplinas de la OCDE	Vulcanología Geociencias Oceanografía, Hidrología y Recursos del Agua
Título de la cita (Recomendado-único)	Persistent shallow micro-seismicity at Llaima volcano, Chile, with implications for long-term monitoring
Identificador del recurso (Mandatado-único)	artículo original
Versión del recurso (Recomendado-único)	version publicada
Condición de la licencia (Recomendado-repetible)	0
Derechos de acceso	metadata
Access Rights	metadata
Identificador relacionado	https://doi.org/10.17615/hqr5-2s05
Id de Web of Science	WOS:000793707000001