Japan Issues Tsunami Advisory After Undersea Earthquake Near Remote Islands
This morning, Japan's Meteorological Agency issued a tsunami advisory for remote islands south of Tokyo following an undersea earthquake. The earthquake, which measured 5.9 in magnitude according to Japanese authorities, occurred near the Izu Islands, with the U.S. Geological Survey recording it at 5.6. The quake's epicenter was offshore, around 180 kilometers south of Hachijo Island, part of the Izu archipelago, which lies approximately 300 kilometers from Tokyo.
Though the quake wasn't felt by the island residents, there were immediate concerns about possible tsunami waves. Tsunami waves of up to one meter above normal tide levels were predicted for parts of the Izu and Ogasawara island chains. A small tsunami, measuring around 50 centimeters, was detected on Hachijo Island shortly after the quake, and smaller waves were observed on nearby islands, including Kozushima, Miyakejima, and Izu Oshima. Fortunately, no damage or injuries were reported, and the advisory was lifted a few hours later.
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Seismologists believe the earthquake and subsequent tsunami waves were likely triggered by undersea volcanic activity. This type of movement might have caused a shift in the ocean floor without the usual shaking associated with traditional earthquakes. Despite the lack of noticeable tremors, authorities warned residents to stay vigilant for possible aftershocks or further sea level changes.
Japan sits on the Pacific "Ring of Fire," making it one of the most earthquake-prone nations in the world. It regularly experiences seismic activity due to its location near four tectonic plates. The country’s advanced infrastructure and preparedness, however, help to mitigate the worst effects of these natural disasters.
The Izu and Ogasawara islands are home to about 24,000 people. These remote regions were also recently affected by record rainfall, which caused deadly floods and landslides, exacerbating concerns for residents still recovering from these disasters.
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