#MOST RECENT VOLCANO ERUPTION 2015 UPDATE#
Source: Istituto Nazionale di Geofisica e Vulcanologia volcano activity update 14 August 2023 From a ground deformation point of view, no significant values have been detected. The earthquake swarm is being located at altitude between 28 meters beneath the South-East crater.
The high-amplitude volcanic tremor lasted about 20 minutes before the eruption onset. Prior to the eruption, the seismic network recorded a sharp peak in internal continuous vibrations (so-called tremor) at 18:00 UTC, a typical sign for the impending paroxysm, indicating magma moving upwards through the volcanic conduits. This could mean that most of the emitted material might be from older lava rocks in the summit crater or inside the vent right now. The live stream of the ongoing eruption, available here, indicates a likelihood of a reduced activity at the volcano's SE summit crater, showing active brownish ash emissions, described as "earthy". Ash and black lapilli set (tephra) have been reported in the area of Rifugio Sapienza - Piano Vetore from the ongoing paroxysm. This resulted in a new lava flow triggering from the southern flank of the South-East crater. From an accessible webcam pointing to the eruptive site, the height of lava fountains seems to have surpassed by some lava jets several hundreds of meters above the vent. Glowing basaltic lapilli-to-bomb-sized scoria material has been regularly ejected onto the upper outer sloper of the crater and caused small incandescent avalanches. The new eruption has been picking up gradually from 18:40 UTC, which became stronger and continuous, defined by a pulsating lava fountaining episode (likely to be classified as paroxysm) from the crater accompanied by continuous dense ash emissions. The INGV volcano observatory reported that strombolian activity from the South-East crater began to increase last night. Mauna Loa, Hawaii’s largest active volcano, is illuminated in the background.The usual sharp spike in tremor preceded the paroxysm onset and its strong decline afterwards (image: INGV) The image below shows an aerial view of the new eruption within Halema‘uma‘u crater on the morning of January 6, 2023. A recent eruption generated a lake of lava that lasted from September 29, 2021, to December 9, 2022. At the time of acquisition, eruption activity on Kilauea’s caldera was concentrated in a large lava lake in the eastern half of Halema‘uma‘u crater, as well as a smaller area of lava in the western half of the crater.
The image is a composite of natural-color (bands 8, 4, 3, and 2) overlaid with false-color (bands 6, 5, and 3) to highlight the infrared (red) signature of the lava. The Operational Land Imager (OLI) on Landsat 8 acquired this image on January 11, 2023. By evening, lava had spilled across the crater at depths of about 10 meters (32 feet). One large burst of lava reached 50 meters (164 feet) high and covered the crater floor with lava. Multiple fountains of lava became active in Halema‘uma‘u crater on the afternoon of January 5. They detected fissures at the base of Halema‘uma‘u crater, within the summit caldera, which generated lava flows. Geological Survey’s Hawaiian Volcano Observatory saw a glow in summit webcam images indicating that the eruption had resumed.
local time on January 5, 2023, Kilauea-Hawaii’s youngest and most active volcano-began erupting once again.
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