停排核污水、提示后续大震风险……日本震情最新汇总

Core Viewpoint - Japan's Meteorological Agency and Cabinet Office issued a warning for potential aftershocks following a 7.5 magnitude earthquake off the coast of Aomori Prefecture, indicating a higher probability of significant seismic activity in the region over the next week [1][3]. Group 1: Earthquake Details - A 7.5 magnitude earthquake occurred in the eastern sea area of Aomori Prefecture on December 8 at 23:15 local time, with a depth of 54 kilometers [3]. - A subsequent 6.4 magnitude earthquake struck the same area on December 9 at 6:52 local time, with a depth of 10 kilometers [1]. Group 2: Tsunami and Evacuations - Following the initial earthquake, tsunami warnings were issued, predicting waves up to 3 meters, but were later downgraded to a "tsunami advisory" level [3]. - Over 100,000 people received evacuation instructions, with reports of injuries in Aomori Prefecture, including 12 in Hachinohe City [6]. Group 3: Nuclear Safety Measures - Tokyo Electric Power Company suspended the discharge of treated nuclear wastewater from the Fukushima Daiichi Nuclear Power Plant following the earthquake [4]. - No abnormalities were reported at nearby nuclear facilities, including the Hokkaido Tomari Nuclear Power Plant and the Aomori Higashidori Nuclear Power Plant [4]. Group 4: Future Earthquake Risks - A report from a government expert meeting is expected to estimate the potential damage from a hypothetical 7.3 magnitude earthquake in Tokyo, projecting 18,000 fatalities and economic losses of 83 trillion yen [7]. - Approximately 400,000 buildings could collapse or be destroyed, with an estimated 4.8 million people needing to seek refuge [8].