Etna volcano update: Earthquakes rattle volcano's southern flank
Sat, 2 Jan 2021, 15:2515:25 PM | BY: T
Earthquakes under Etna volcano during 31 Dec 2020-2Jan 2021
A series of earthquakes shook the flanks of Etna volcano during the past days. Since the afternoon of 31 Dec 2020 until this morning, a swarm of tremors has occurred at depths of 10-15 km mainly under the southern flank of the volcano.
Steaming from the New SE crater (image: LAVE webcam)
A total of almost 40 quakes of magnitudes of up to 3.8 have been recorded, most of them on 31 Dec and early 1 Jan. The strongest quakes were widely felt by people living on the southern slopes of Etna.
There are no signs that that these quakes have affected the activity at the summit craters, which has been calming down gradually, and seems to consist only of sporadic (if any) weak strombolian activity and some ash emissions from the New SE crater and, to lesser extent, the Voragine central crater.
It is unclear whether the earthquakes were volcanic in origin, but they might well be so, possibly caused by deep magmatic intrusions that pressurize deep reservoirs and break up rocks in the mantle to create space, resulting in small earthquakes. Ultimately, they might but not necessarily need to be precursors of a new phase of activity, something that only Etna knows at the present.
Sat, 2 Jan 2021, 15:02
The United States Geological Survey (USGS) reported a magnitude 4.5 quake in the United States near Soledad, Monterey County, California, only 6 minutes ago. The earthquake hit early morning on Saturday 2 January 2021 at 6:42 am local time at a very shallow depth of 4 miles. The exact magnitude, epicenter, and depth of the quake might be revised within the next few hours or minutes as seismologists review data and refine their calculations, or as other agencies issue their report. ... read all
Sat, 2 Jan 2021, 14:56
Small magnitude 3.2 quake hits 14 miles northeast of Soledad, California, United States early morning
An earthquake of magnitude 3.2 occurred early morning on Saturday 2 January 2021 at 6:36 am local time near Soledad, Monterey County, California, USA, as reported by the United States Geological Survey (USGS). ... read all
Sat, 2 Jan 2021, 14:19
A magnitude 4.8 earthquake near Luwuk, Kabupaten Banggai, Central Sulawesi, Indonesia, was reported only 10 minutes ago by Indonesia's Meteorology, Climatology, and Geophysical Agency (BMKG), considered the main national agency that monitors seismic activity in Indonesia. The earthquake occurred at a shallow depth of 10 km beneath the epicenter in the evening on Saturday 2 January 2021 at 9:59 pm local time. The exact magnitude, epicenter, and depth of the quake might be revised within the next few hours or minutes as seismologists review data and refine their calculations, or as other agencies issue their report. ... read all
Sat, 2 Jan 2021, 14:00
Sat, 2 Jan 2021, 13:56
An earthquake of magnitude 4.3 occurred late at night on Saturday 2 January 2021 at 10:36 pm local time near Ōfunato, Ōfunato-shi, Iwate, Japan, as reported by NIED. ... read all