Magnitude 6.2 quake shakes Hokkaido

A magnitude 6.2 earthquake rattles Japan’s Hokkaido region, reviving concerns just days after a rare megaquake advisory. | Contesto: cronaca

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• Magnitude 6.2 quake shakes Hokkaido

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A magnitude 6.2 earthquake struck off the coast of Hokkaido, Japan, on [current date], shaking buildings and rattling residents but triggering no tsunami warning. The quake, centered in the Pacific Ocean near the northern island, was felt widely across Hokkaido’s main cities, though no immediate reports of damage or casualties have been confirmed. Japan’s Meteorological Agency measured the temblor at a depth of approximately 50 kilometers, classifying it as a moderate but notable seismic event. The tremor comes less than a week after Japanese authorities issued an unprecedented special advisory warning of an elevated risk of a megaquake along the Nankai Trough, a volatile fault line south of Honshu. That advisory, the first of its kind under a new protocol, urged residents from Tokyo to southwestern Japan to review preparedness plans, though it did not predict an imminent disaster. The Hokkaido quake, while occurring in a separate seismic zone, has reignited public anxiety and underscored the country’s persistent vulnerability to major earthquakes. Japan, situated on the Pacific Ring of Fire, experiences roughly 1,500 seismic events annually, most of them minor. However, the memory of the 2011 Tohoku earthquake and tsunami—which killed nearly 20,000 people and triggered the Fukushima nuclear disaster—remains fresh. The recent megaquake advisory was prompted by a magnitude 7.1 quake in the Nankai region, which scientists fear could presage a larger rupture capable of generating waves exceeding 30 meters. No such advisory was issued for Hokkaido, but the timing of the 6.2 event has sparked debate among seismologists about potential links between distant fault systems. The Japanese government has yet to release an official statement linking the Hokkaido quake to the Nankai advisory, emphasizing that each event should be assessed independently. Still, local authorities in Hokkaido have activated emergency response protocols, inspecting infrastructure and advising residents to stay alert for aftershocks. Public transportation, including bullet train services, briefly suspended operations as a precaution, but normal schedules have since resumed. For many Japanese,...

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Categoria: cronaca