La Palma volcano eruption update: measurements reveal first eruption data
lun., 20 sept. 2021, 10:3010:30 AM | AUTEUR : MARTIN
Lava fountains and lava flows at the current eruption site at La Cumbre Vieja volcano (image: @SquigglyVolcano/twitter)
The Volcanological Institute of Canary Islands (INVOLCAN) revealed the first measurements of SO2 concentrations in the atmosphere and a lava flow discharge rate of the current eruption at the La Cumbre Vieja volcano that began yesterday.
Very high thermal anomaly detected by MIROVA (image: MIROVA)
Sulfur dioxide emissions
First estimated amount of sulfur dioxide (SO2) emissions occurring in the plume reached to a 6000-9000 tonnes/day provided by the AEMET.
Lava flow discharge rate
New measurements were also made to provide new parameters of the lava flow discharge rate. The average lava flow discharge rate at the current eruption site is about 0,7 kilometers per hour.
According to MIROVA Detection System a very high thermal anomaly (2828 MW) was detected in satellite images yesterday, but it decreased to 1509 MW today.
Around 5,000 people have been evacuated from the high-risk areas. The efforts are focused on reducing infrastructural damage.
The La Cumbre Vieja volcano erupted after 8 days of intense seismic crisis yesterday afternoon as two eruptive fissures opened in the area of the Montaña Rajada mountains accompanied by lava fountains erupted from at least 7 individual vents.
Source: Instituto Volcanológico de Canarias volcano activity update 20 September 2021
Vigorous lava spattering is seen from the main vent that have begun to shoot a few 100 m height (source: Radio televisión Canaria/twitter)
lun., 20 sept. 2021, 10:23
The scenario of new eruptive fissures opening might be not that unlikely at all. The surface continues to inflate, which is a sign that more magma is being stored underground that (can erupt) erupts at the surface - the existing paths are not large enough. The volcano might choose to either enlarge them or create new ones. ... Read all
lun., 20 sept. 2021, 10:18
The eruptio in the Cabeza de Vaca area, in El Paso municipality, continues from at least 8 active vents along the two eruptive fissures that opened yesterday at about 200 m distance from each other. The lava has already entered the municipality of Los LLanos de Aridane when crossing the LP2 highway, and is directed towards the centers of La Bombilla and Puerto Naos on the coast. ... Read all