Mw 6.1 SOUTH OF FIJI ISLANDS

Real-time – Last 50 earthquakes worldwide M6+

Another strong earthquake was detected by the USGS. Further details are:

Magnitude   Mw 6.1
Region   SOUTH OF FIJI ISLANDS
Date time   2020-10-23 07:04:31.4 UTC
Location   25.69 S ; 179.91 W
Depth   464 km

Author: USGS

Mw 6.0 WEST CHILE RISE

Real-time – Last 50 earthquakes worldwide M6+

Another strong earthquake was detected by the USGS. Further details are:

Magnitude   Mw 6.0
Region   WEST CHILE RISE
Date time   2020-10-23 01:46:21.4 UTC
Location   36.32 S ; 97.21 W
Depth   40 km

Author: USGS

Iceland: Earthquake M 5.6

On the Icelandic Reykjanes Peninsula, the earthquake struck this afternoon at 13.43 UCT with a magnitude of 5.6, with the epicenter located 3.9 km west of Krýsuvík and only a few kilometers from Grindavik. The hypocenter was located at a depth of 3.3 km. The quake could be felt in large parts of southwest Iceland and shook the capital. For Iceland it was a strong quake. There were numerous aftershocks, although I would honestly say that the main quake triggered a seismic swarm. So far 219 quakes have been registered, 12 with magnitudes greater than 3.

Alaska: Earthquake Mw 7,5

Off the coast of the US state of Alaska, the earth shook last night with a magnitude of 7.5, the epicenter being located 84 km southeast of Sand Point. This is a place on the Aleutian island of Unalaska. The hypocenter was at a depth of 40 km. Despite the relatively large depth of the earthquake epicenter there was a tsunami alarm. The same applies to larger damages. The region is only sparsely populated. In relative proximity to the location of the earthquake are some volcanoes that are classified as potentially active: Mount Makushin, Mount Okmok and the volcanic island of Bogoslof, to name only 3. The volcanism of the region is directly related to the Aleutian subduction zone where the earthquake occurred.

As is typical for earthquakes of this magnitude, there were numerous aftershocks. The strongest one had the magnitude 5.9 and further aftershocks must be expected.

Mw 7.5 SOUTH OF ALASKA

Real-time – Last 50 earthquakes worldwide M6+

Another strong earthquake was detected by the USGS. Further details are:

Magnitude   Mw 7.5
Region   SOUTH OF ALASKA
Date time   2020-10-19 20:54:40.7 UTC
Location   54.71 N ; 159.75 W
Depth   40 km

Author: USGS

Etna: Video from the NE crater

Etna in Sicily is still active from 2 craters. Satellite images reveal 2 thermal anomalies: one originates from the New Southeast Crater, which is known to be strombolian active and has ejected ashes in phases a few days ago. The 2nd anomaly manifests itself in the Northeast Crater. The summiter Elia Finocchiaro climbed it yesterday and brought a nice video of the activity in the crater. Such images of Northeast Crater are rare. You can see 3 active vents from which lava sprays out. From one of the small vents a strombolian eruption was generated. Around the vents cones are already forming.

The tremor did not fluctuate as strongly in the past 2 days. But there were more earthquakes under the central crater area, in Valle del Bove and at the Pernicana fault zone. MIROVA registered a high thermal radiation with an output of 170 MW. Should such a value be measured repeatedly, there could be an intracrater lava flow.

Dukono (Indonesia)

GVP-report for 30 September-6 October 2020

Based on satellite and wind model data, and information from PVMBG, the Darwin VAAC reported that during 30 September-6 October ash plumes from Dukono rose 1.8-2.4 km a.s.l. and drifted in different directions. The Alert Level remained at 2, and the public was warned to remain outside of the 2-km exclusion zone.

Sources: Darwin Volcanic Ash Advisory Centre, PVMBG

Klyuchevskoy (Russia)

GVP-report for 30 September-6 October 2020

Strombolian activity at Klyuchevskoy began at 1003 on 2 October prompting KVERT to raise the Aviation Color Code to Yellow. Explosions ejected ash 300-400 m above the volcano and produced gas-and-steam plumes with some ash that drifted down the E flank.

Source: Kamchatkan Volcanic Eruption Response Team

Mw 6.0 EASTER ISLAND REGION

Real-time – Last 50 earthquakes worldwide M6+

Another strong earthquake was detected by the USGS. Further details are:

Magnitude   Mw 6.0
Region   EASTER ISLAND REGION
Date time   2020-10-10 13:15:06.2 UTC
Location   28.69 S ; 112.43 W
Depth   80 km

Author: USGS

Pacaya: Activity increased

Yesterday the activity of Pacaya in Guatemala increased again. INSIVUMEH reports 3 active lava flows, which were extracted from different vents at the base of the McKenney crater. The longest flow reached a length of 400 m and flowed towards the northeast. The second flow was 300 m long and moved on the north flank, while a third lava flow on the west flank had a length of 200 m. Lava flows there did not occur during the last months. Furthermore, the McKenney crater was strombolian active. During the last night the activity seems to have decreased again a little bit: the only moderate heat radiation displayed by MIROVA indicates this.