News from Ambae, Agung and Kilauea

In Vanuatu, on the island of Ambae, the volcano of Lake Voui has a strong ash emission this 1st of July 2018 at 13h.

A short thermal anomaly is reported by the Mirova site, between 69 MW at 11:05 and 17 MW at 14:10

Ash fell on a western sector; the ash cloud has been spotted at various altitudes towards Espiritu Santo, the neighboring island.

This acyivity remains in alert level 2 standards, with a safety zone of 2 km radius around the active vent.

Source: Santo Ambae Community Disaster Support

The Agung remains under surveillance!

From 27 June to 2 July 2018 at 09:00 WITA, the height of the eruptive column (gas and ash) tended to decrease but not significantly from 2500 m above the summit to 200-2000 m above the summit. At night and early in the morning, the glow above the crater is still observed.

This indicates the presence of fresh lava materials with high temperatures in the crater and always the movement of magma on the surface.

Inflation, on the order of one centimeter from June 28 to July 2, has dropped slightly, but the system remains under tension, indicating magma pressure.

In the period from June 28 to July 1, 2018, a new lava flows from the center of the crater and extends radially (circularly) with a volume of about 4-5 million cubic meters. Since the eruption from November 21, 2017 to July 1, 2018, the total volume of the lava dome has reached approximately 27-28 million cubic meters or nearly 50% of the empty volume of the Agung crater, of about 60 million cubic meters. The height difference between the lowest crater lips (on the southwest side) and the highest lava dome surface (in the center of the crater) is about 85 to 90 meters.

Hot spots corresponding to the effusive activity are noticed by the satellites, and the thermal energy went from a maximum of 819 MW to 58 MW at the last measurement.

Source: PVMBG, Magma Indonesia, and thanks to Thierry Sluys for sharing photos.

The eruption continues in the eastern rift zone of Kilauea, where fissure 8 continues to emit lava flows.

Lava flows are coming from the spatter cone, 55 meters high at its highest point, and where fountains rarely exceed this point.

The fissure 22 emits spatters 50-80 meters above the small cone, and feeds a short flow slowly advancing to the northeast.

The lava front at the entrance to the sea at Kapoho has expanded in recent days ... lava enters the ocean mainly in the northern part of the new delta. A huge lava inlet is located between Kapoho bay and the former Vacationland subdivision.

The satellite images illustrate the collapse of the Halama 'uma' u crater and the position of the intracratal fissures