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Risk of strong Pacific quake still high; Tokyo gets 47% rating | The Asahi Shimbun: Breaking News, Japan News and Analysis

The likelihood of a powerful earthquake striking over the next 30 years remains high along Pacific coastal areas of Japan in light of a spate of recent aftershocks triggered by the magnitude-9.0 Great East Japan Earthquake of 2011, scientists say.

Osaka , Japan , Iwate , Nagoya , Aichi , Tokyo , Tohoku , Japan-general- , Sendai , Miyagi , Japanese , Naoshi-hirata

Verisks AIR Worldwide Enhances Extreme Event Models for Japan With Release of Updated Earthquake and Typhoon Models

Verisks AIR Worldwide Enhances Extreme Event Models for Japan With Release of Updated Earthquake and Typhoon Models
pressreleasepoint.com - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from pressreleasepoint.com Daily Mail and Mail on Sunday newspapers.

China , Boston , Massachusetts , United-states , Hikurangi , New-zealand-general- , New-zealand , Japan , South-korea , Tohoku , Japan-general- , Bingming-shen-tu

Verisk's AIR Worldwide Enhances Extreme Event Models for Japan With Release of Updated Earthquake and Typhoon Models

Verisk's AIR Worldwide Enhances Extreme Event Models for Japan With Release of Updated Earthquake and Typhoon Models
finanznachrichten.de - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from finanznachrichten.de Daily Mail and Mail on Sunday newspapers.

Japan , United-states , New-zealand , Tohoku , Japan-general- , Boston , Massachusetts , China , Hikurangi , New-zealand-general- , South-korea , America

Frontiers | An Evaluation of Strong-Motion Parameters at the S-net Ocean-Bottom Seismograph Sites Near the Kanto Basin for Earthquake Early Warning

National Research Institute for Earth Science and Disaster Resilience, Tsukuba, Japan
We analyzed strong-motion records at the ground and borehole in and around the Kanto Basin and the seafloor in the Japan Trench area from three nearby offshore earthquakes of similar magnitudes (Mw 5.8–5.9). The seafloor strong-motion records were obtained from S-net, which was established to enhance tsunami and earthquake early warnings after the 2011 great Tohoku-oki earthquake disaster. The borehole records were obtained from MeSO-net, a dense network of seismometers installed at a depth of 20 m in the Tokyo metropolitan area. The ground records were obtained from the K-NET and KiK-net networks, established after the 1995 great Hanshin-Awaji earthquake disaster. The MeSO-net and S-net stations record the shakings continuously, while the K-NET and KiK-net records are based on triggering thresholds. It is crucial to evaluate the properties of strong motions recorded by the S-net for earthquake early warning (EEW). This paper compared the peak ground accelerations (PGAs) and peak ground velocities (PGVs) between the S-net and K-NET/KiK-net stations. Because the MeSO-net records were from the borehole, we compared the PGAs and significant durations of the low-frequency motions (0.1–0.5 Hz) between the S-net and MeSO-net stations from identical record lengths. We found that the horizontal PGAs and PGVs at the S-net sites were similar to or larger than the K-NET/KiK-net sites for the S wave. In contrast, the vertical PGAs and PGVs at the S-net sites were similar to or smaller than those at the K-NET/KiK-net sites for the S wave. Particularly, the PGAs and PGVs for the P-wave parts on the vertical-component records of S-net were, on average, much smaller than those of K-NET/KiK-net records. The difference was more evident in the PGAs. The average ratios of S-wave horizontal to vertical PGAs were about 2.5 and 5 for the land and S-net sites, respectively. The low-frequency PGAs at the S-net sites were similar to or larger than those of the MeSO-net borehole records. The significant durations between the two-networks low-frequency records were generally comparable. Quantification of the results from a larger dataset may contribute to ground-motion prediction for EEW and the design of the offshore facilities.

Tokyo , Japan , Taiwan , United-states , Ishigami , Saitama , Japan-trench , Japan-general- , Tohoku , Midorikawa , California , Canada

JMA will stop calling temblors an aftershock of 3/11 quake : The Asahi Shimbun

JMA will stop calling temblors an aftershock of 3/11 quake : The Asahi Shimbun
asahi.com - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from asahi.com Daily Mail and Mail on Sunday newspapers.

Japan , Tohoku , Japan-general , Japanese , Headquarters-for-earthquake-research-promotion , Japan-meteorological-agency , Great-east-japan-earthquake , Chiba-prefecture , Earthquake-research-promotion , ஜப்பான் , தோஹோக்கு

Risk of huge earthquake stays high on Japan's Pacific side

Risk of huge earthquake stays high on Japan's Pacific side
japantimes.co.jp - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from japantimes.co.jp Daily Mail and Mail on Sunday newspapers.

Osaka , Japan , Ibaraki , Tokyo , Yamanashi , Shizuoka , Japan-trench , Japan-general- , Tohoku , Kinki , Tokushima , Chishima

Tokyo court « nuclear-news

Posts about Tokyo court written by dunrenard

Gunma , Gumma , Japan , Tokyo , Maebashi , Tohoku , Japan-general , Sendai , Miyagi , Fukushima-daiichi , Izutaro-managi , Sendai-high-court

Tokyo High Court rules state not liable in 2011 nuclear accident

Tokyo High Court rules state not liable in 2011 nuclear accident
The Tokyo High Court finds the state not liable for the 2011 Fukushima nuclear power plant accident. A legal team member for the plaintiffs holds up a sign stating, “It is an unjust ruling,” in Tokyo on Jan. 21.
January 22, 2021
The Tokyo High Court has ruled the government should not be held responsible for the 2011 Fukushima No.1 nuclear power plant accident and be forced to pay compensation to evacuees.
Residents who evacuated to Gunma Prefecture due to the accident claimed damages against the government and Tokyo Electric Power Co. (TEPCO). But according to the Jan. 21 appellate ruling, the court found the state was not liable and ordered only TEPCO to pay compensation.

Gunma , Gumma , Japan , Tokyo , Maebashi , Tohoku , Japan-general , Sendai , Miyagi , Fukushima-daiichi , Izutaro-managi , Sendai-high-court