A new vent opens and displays explosive activity

A new vent opens and displays explosive activity

Red traffic light

Earthquake number drops but magnitude remains >4 mbLg

Data type: Geological report

Groups: Seismic activity – Volcanic tremor – Volcanic tremor intensification pulses – Subsidence – Plume height – Earthquakes felt

Since the last statement, 47 earthquakes have been located in the area, and 7 of these earthquakes have been felt by the population. The largest earthquake (4.3 mbLg) occurred at 11:33 UTC on the 18th, with a depth of 37 km. A total of 9 earthquakes have been located at depths around 30 km, the rest of the hypocenters of the period are located at a shallower depth, around 12 km. The volcanic tremor signal maintains a high mean amplitude, with fewer intensification pulses than in the previous 24 hours. The island’s network of permanent GNSS stations does not show a clear trend in the deformation of the stations closest to the eruptive centres, while in the stations further away a slight deflation is observed, possibly related to deep seismicity. The height of the scattering cloud measured at 08:00 UTC is estimated to be 5,000 m, climbing 1000 m in 24 hours (IGN, 2021). The lava flow that has moved around the south of Montaña de La Laguna is approximately 100 m from the coastline today. A new vent located between the main cone and 300 m South East of the base, which exhibited explosive phreatomagmatic activity and then strombolian activity (GVP, 2021).

This video taken on the 19th of October shows how the active lava flow is able to move a large erratic block towards Tajuya in the north zone of the lava flow field. Sourced from IGME (2021).

No Comments

Sorry, the comment form is closed at this time.