Bulletins | LGS

Bulletins

Bulletin n. 7143

10/09/2024 - 09:30

The number of VLP seismic events (standard values 5-12) is medium, 9.3 events/hour.

The amplitude of seismic tremor is high.

The infrasonic activity is high. The acoustic pressure of explosions is low, 0.97 bar (standard values <1 bar). The amplitude of puffing is very high, ~210 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: 5.67 MW (00:06 UTC yesterday).

Rockfall activity is medium. The number of rockfalls is 12 per day.

SO2 flux in the NE sector of the crater terrace is very high, 299 t/d

CO2 flux based on the C/S of 3.76 mesured at 03:20 UTC on 2024/09/10 is medium, 1222 t/d

Indice di Attività Vulcanica: high

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

The volcanic activity is generally characterized by strombolian explosions located at SW and NE crater sectors. In the last 24h, the Stromboli volcano shows a VERY HIGH degassing activity (puffing 210 mbar) located at NE crater sector. The pressure of the explosions is MEDIUM (max acoustic pressure 0.97 bar). The number of thermal transients detected from thermal camera is not avaiable. The volcanic tremor shows HIGH values. The number of VLP events is MEDIUM (9.3 events/hour). MODIS/VIIRS images show LOW thermal anomalies (max 5.67 MW). The SO2 flux measured at the NE crater sector is VERY HIGH (299 t/d). The CO2 flux, based on the C/S ratio of 3.76, measured on 10/09/2024 at 03:20 UTC, is MEDIUM (1222 t/d). The rockfall activity is HIGH (12 events detected in the last 24h), with MEDIUM seismic pseudo-volumes involved.The volcanic activity index is HIGH.