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
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