Many earthquakes shake Tokara Islands, with 12 Mag 4.5+

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A series of earthquakes, including a magnitude 5.1 event, occurred north of Naze, Japan, on April 12, 2021, with a depth of 10 km. This seismic activity is part of a cluster of M4+ and M5+ earthquakes near Amami Ōshima and Toshima, indicating a significant geological event. The earthquakes may be linked to volcanic activity, potentially signaling a prelude to an undersea eruption or the formation of a new volcanic island. The area is also near Suwanose-jima and Akuseki-jima, which adds to the speculation about volcanic implications. The Ryukyu Trench's geological context further supports the likelihood of ongoing tectonic and volcanic processes in the region.
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M 5.1 - 106 km N of Naze, Japan
https://earthquake.usgs.gov/earthquakes/eventpage/us6000e0zk/executive
  • 2021-04-12 14:01:47 (UTC)
  • 29.326°N 129.480°E
  • 10.0 km depth
A small swarm or cluster of M4+, M5+ earthquakes north of Amami Ōshima, Japan, and seemingly close to Toshima,
5.1 Mag 106 km N of Naze, Japan
2021-04-12 07:01:47 (UTC-07:00) 10.0 km
4.7 Mag 107 km N of Naze, Japan
2021-04-11 05:14:21 (UTC-07:00) 59.0 km
4.8 Mag 108 km N of Naze, Japan
2021-04-11 05:00:26 (UTC-07:00) 30.8 km
4.5 Mag 115 km WSW of Kurio, Japan
2021-04-11 03:01:24 (UTC-07:00) 61.7 km
4.7 Mag 87 km N of Naze, Japan
2021-04-10 16:00:21 (UTC-07:00) 10.0 km
4.8 Mag 116 km WSW of Kurio, Japan
2021-04-10 13:40:44 (UTC-07:00) 25.7 km
4.8 Mag Ryukyu Islands, Japan
2021-04-10 13:20:38 (UTC-07:00) 10.0 km
4.7 Mag 102 km N of Naze, Japan
2021-04-10 11:18:14 (UTC-07:00) 10.0 km
4.9 Mag 118 km N of Naze, Japan
2021-04-10 06:10:42 (UTC-07:00) 33.9 km
5.2 Mag 99 km N of Naze, Japan
2021-04-10 00:36:28 (UTC-07:00) 35.0 km
5.1 Mag 94 km NNE of Naze, Japan
2021-04-09 23:52:12 (UTC-07:00) 35.0 km
5.3 Mag 102 km N of Naze, Japan
2021-04-09 15:07:30 (UTC-07:00) 12.6 km

There are many more < Mag 4.
Hundreds of earthquakes shake Tokara Islands
https://www3.nhk.or.jp/nhkworld/en/news/20210412_08/
 
Earth sciences news on Phys.org
Astronuc said:
A small swarm or cluster of M4+, M5+ earthquakes north of Amami Ōshima, Japan, and seemingly close to Toshima,

maybe a prelude to an undersea eruption ?

that would be cool :wink:
 
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