Bulletins | LGS

Bulletins

Bulletin n. 7363

29/04/2025 - 08:38

The number of VLP seismic events (standard values 5-12) is medium, 11.9 events/hour.

The amplitude of seismic tremor is medium.

The infrasonic activity is medium. The acoustic pressure of explosions is low, 0.6 bar (standard values <1 bar). The amplitude of puffing is medium, ~50 mbar.

Tiltmeters analysis does not show any significant deformation of the volcano edifice

Thermal activity of explosive events is not available. The number of thermal transients in the NE sector of the crater(standard = 100) is not available. The amplitude of thermal transients is not available. Exit velocity of pyroclasts, estimated through thermal camera analysis, is not available.

MODIS thermal anomalies are low: 3 MW (01:36 UTC yesterday).

Rockfall activity is medium. The number of rockfalls is 10 per day.

SO2 flux in the NE sector of the crater terrace is medium, 77 t/d

CO2 flux based on the C/S is not available

Indice di Attività Vulcanica: medium

  • Seismic (VLP) rate MEDIUM
  • Seismic tremor MEDIUM
  • Puffing MEDIUM
  • Acustic pression of explosions LOW
  • Thermal activity NOT AVAILABLE
  • SO2 flux MEDIUM
  • CO2 flux not available
  • Rockfall activity MEDIUM

The volcanic activity is characterized by Strombolian explosions located at NE crater sector and degassing (puffing/spattering) located at NE, C and SW crater sectors. In the last 24h, degassing activity (puffing/spattering) showed HIGH values (50 mbar). The explosive activity is MEDIUM (max acoustic pressure 0.6 bar). The volcanic tremor shows MEDIUM values, with associated MEDIUM number of VLP events (11.0 events/hour). MODIS/VIIRS thermal data shows LOW (3 MW) thermal anomalies. SO2 flux shows MEDIUM values (last: 77 t/d ), CO2 flux is not available. The rockfall activity is MEDIUM (10 event detected in the last 24 h, with associated MEDIUM pseudo-volumes). The volcanic activity index is MEDIUM.