Bulletins | LGS

Bulletins

Bulletin n. 7109

07/08/2024 - 08:10

The number of VLP seismic events (standard values 5-12) is medium, 8.9 events/hour.

The amplitude of seismic tremor is medium.

The infrasonic activity is medium. The acoustic pressure of explosions is low, 0.4 bar (standard values <1 bar). The amplitude of puffing is medium, ~81 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: no thermal anomalies.

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

SO2 flux in the NE sector of the crater terrace is low, 67 t/d

CO2 flux based on the C/S of 10.38 mesured at 03:20 UTC on 2024/08/07 is medium, 707 t/d

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 LOW
  • CO2 flux MEDIUM
  • Rockfall activity MEDIUM

The volcanic activity is generally characterized by degassing activity and explosions located at the new NE crater sector. In the last 24h, the Stromboli volcano showed MEDIUM values of infrasonic amplitude of the explosions. The degassing acticity, in the last 24 hours, oscillates between MEDIUM and HIGH values coherently with volcanic tremor amplitude. The number of VLP events showed MEDIUM values (8.9 events/hour with low amplitude). SO2 flux shows a decreasing trend up to LOW values (last:67 t/d). The CO2 flux shows a decreasing trend up to MEDIUM values (last value:707 t/d based on the C/S ratio of 10.4 recorded on 07/08/2024). The rockfall activity is MEDIUM (10 events detected with LOW pseudo-volumes associated). The volcanic activity index is MEDIUM.