Latest news with #seismic activity
NHK
4 days ago
- NHK
Japan's Tokara island chain marks 1 month since quake swarm began
Monday marks one month since seismic activity intensified in the sea around the Tokara island chain in southwestern Japan, with nearly 2,200 tremors perceptible to people so far recorded. A series of earthquakes began occurring near the islands of Akusekijima and Kodakarajima of the Tokara island chain on June 21. A quake measuring an intensity of lower 6 on the Japanese scale of 0 to 7 hit Akusekijima Island on July 3. Others with intensities of upper 5 and lower 5 have been recorded three times each on the island. Kodakarajima Island also experienced a quake with an intensity of lower 5. As of 5 a.m. on Monday, there had been 2,196 quakes with an intensity of at least 1 in the sea near the Tokara island chain. The sea off the island chain went through a series of earthquakes in 2021 and again in 2023. But the current swarm has been far larger in terms of the number of jolts. The Japan Meteorological Agency is urging residents to stay alert for the time being for possible quakes with intensities of up to lower 6.
NHK
5 days ago
- Climate
- NHK
Japan's Tokara Islands hit by nearly 2,200 quakes since June 21
Nearly 2,200 earthquakes strong enough to be felt by humans have recently struck around a southwestern Japanese island chain. Weather officials are calling on people to remain vigilant against more earthquakes that could register lower 6 on the Japanese seismic intensity scale of zero to seven. Seismic activity has intensified since June 21 around the islands of Akusekijima and Kodakarajima, which are part of Kagoshima Prefecture's Tokara Islands. A quake measuring lower 6 hit Akusekijima Island on July 3, followed by two jolts with intensities of upper 5 on July 6. Another quake registering lower 5 struck the island on July 7. The Japan Meteorological Agency says that as of 11 a.m. on Sunday, a total of 2,193 tremors with intensities of one or higher have been observed in the sea off the Tokara Islands since June 21. Most recently, there were 14 on Friday, 15 on Saturday, and three by 11 a.m. on Sunday. The sea off the island chain saw a series of earthquakes in 2021 and 2023. But the number of recent jolts has far exceeded the past figures.
NHK
16-07-2025
- Climate
- NHK
Japan's Tokara Islands hit by 2,000 quakes since June 21
More than 2,000 earthquakes that can be felt by humans have recently struck around a southwestern Japanese island chain. Weather officials are calling on people to remain vigilant for more earthquakes that could register lower 6 on the Japanese seismic intensity scale of zero to seven. Seismic activity has intensified since June 21 around Akusekijima Island and Kodakarajima Island in the Tokara Islands in Kagoshima Prefecture. A quake measuring lower 6 hit Akusekijima Island on July 3, followed by two jolts with intensities of upper 5 on July 6. Another quake registering lower 5 struck the island on July 7. The Japan Meteorological Agency says that as of 11 a.m. on Wednesday, a total of 2,087 tremors with intensities of one or higher have been observed in the sea off the Tokara Islands since June 21. This week alone, there were 40 on Monday, 31 on Tuesday, and 11 up to 11 a.m. on Wednesday, including one measuring 4 on Akusekijima Island that occurred after 2 a.m. The sea off the island chain saw a series of earthquakes in 2021 and 2023. But the number of recent jolts has far exceeded the past figures.
