The explosive eruption at the volcano continues.
The Observatorio Vulcanológico y Sismológico de Costa Rica (OVSICORI) issued that three small phreatic eruptions and 23 steam-laden plumes appeared from the volcano over the past week. Phreatic explosions form when the ejecta consist solely of old country rock, indicating interaction between water and heated conduit-rocks rather than magma itself.
The seismic instrument continues to record ongoing periods of variable tremor amplitudes ranging between (0.5 Hz-8 Hz) frequencies. In addition, sporadic volcano-tectonic earthquakes associated with rock fracturing at depth have been detected.
The Global Navigation Satellite System (GNSS) measurements continue to record the edifice’s summit uplifted by 2.5 cm since August.
Based on data from December last year, magma is presumably being stored at depth between 2,5-5 km.
Mean values of sulfur dioxide (SO2) emissions reached to a 257 ± 45 tonnes.
Source: Observatorio Vulcanológico y Sismológico de Costa Rica volcano activity update 29 October 2023
Steam-driven and phreatic eruptions continue at Rincon de la Vieja volcano (source: OVSICORI)
#volcan #volcano #RincondelaVieja Les explosions hydrothermales ou peut-être phréatiques se poursuivent/Hyrothermal or maybe phreatic explosions are still occuring pic.twitter.com/pmdigkSmCT
— CultureVolcan (@CultureVolcan) October 28, 2023