A decrease and then rapid increase in volcanic tremour is followed by an increase in explosive eruptive behaviour.

23 Dec A decrease and then rapid increase in volcanic tremour is followed by an increase in explosive eruptive behaviour.

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Hawiian eruptive behaviour creates lava flows and an ash plume whilst seismic activity drops

Data type: Geological report

Groups: Ash emission activity – Plume height- Volcanic tremor – Eruption increases – VONA

Source: https://web.archive.org/web/20230217170805/https://www.ign.es/web/resources/volcanologia/html/CA_noticias_2021.html

The mean amplitude of the volcanic tremor remained at very low values for this eruption until 15:00 UTC yesterday and subsequently practically zero between 15:00 and 17:00 UTC. From that moment the volcanic tremor began to increase considerably. This morning, due to the increase in the explosive eruptive activity IGN has issued a new VONA (Volcano Observatory Notice for Aviation) communicating the increase in the emission of ash, as well as the increase in the height of the ash cloud, which has reached 7000 m in height.

This video shows eruptive behaviour on the 28th of September at the vent producing a large lava flow field with many of the individual lava flows bifurcating at topographical obstructions. Sourced from IGME (2021).

23 Dec A decrease and then rapid increase in volcanic tremour is followed by an increase in explosive eruptive behaviour.

This video shows eruptive behaviour on the 28th of September at the vent producing a large lava flow field with many of the individual lava flows bifurcating at topographical obstructions. Sourced from IGME (2021).

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