Etna volcano update: Intense strombolian activty and lava flows from New SE crater
mer., 13 août 2014, 18:1718:17 PM | AUTEUR : T
Powerful explosion at Etna New SE crater on 11 Aug 2014 (Photo: Emanuela / VolcanoDiscovery Italia)
Ash-rich strombolian activity at the NSEC this evening
Current tremor amplitude (ESLN station, INGV Catania)
Strong strombolian explosions in rapid succession and lava effusion continue from the New SE crater with little variation during the past days. An ash plume is rising a few 100 m. Tremor has dropped a bit yesterday, but remains elevated.
Thermal image of Etna's active lava flows from the New SE crater (Monte Cagliato thermal webcam, INGV Catania)
Whether Etna is heading towards a true paroxysm with lava fountains is unclear, but if the new phase of activity is similar to the previous episodes, it might continue the same type of activity at fluctuating levels for a while and then fade.
The lava flow's main branch, issued from a fissure vent at the upper eastern rim of the NSEC, is headed to the northeast and has now a length of approx. 2 km. Its wide active front has reached the base of the Valle del Bove. Two secondary arms divide from the main flow and are flowing more to the east towards the break in slope into the Valle del Bove east of the NSEC (s. thermal image).
This new activity at the New SE crater had started on 9 August and gradually intensified until Monday, then dropped a bit and has been stagnating since.
Along with the appearance of lava at the NSEC, the explosive-effusive activity from the vents at the eastern base of the NE crater, which had continued through the past weeks, gradually waned and ceased on 10 or 11 Aug.
mer., 13 août 2014, 06:00
Etna volcano (Sicily, Italy) - Smithsonian / USGS Weekly Volcanic Activity Report for 13 August-19 August 2014 (Continuing Activity)
On 13 August INGV reported continued eruptive activity at New SE Crater of Etna, including Strombolian explosions accompanied by minor ash emissions. Lava continued to flow about 3 km NE towards Monte Simone. On 18 August INGV reported that the eruption at New SE Crater had ended on 15 August and lava flow activity had ceased as of 16 August. ... Read all
mer., 6 août 2014, 13:50
Decreasing tremor and weakening thermal signals suggest that the explosive / effusive activity from the vents at the eastern foot of the NE crater still continues, but at reduced rate. At least one lava flow seems to be still active. ... Read all