サントリーニ島の下で大量のマグマ流入が2025年初頭に2万8000回以上の地震を引き起こした、新しい研究によると。研究者らは高度なAIと海底センサーを用いて溶岩の動きを追跡した。発見はサントリーニと近隣の海底火山Kolumboとのこれまでに知られていなかったつながりを明らかにした。
2025年1月下旬、サントリーニ島と周辺のエーゲ海地域で激しい地震活動が発生し、2万8000回以上の地震が記録され、一部はマグニチュード5.0を超えた。GFZ Helmholtz Centre for GeosciencesとGEOMAR Helmholtz Centre for Ocean Research Kielの科学者らと国際パートナーが、Natureに掲載された研究で原因を詳述した。
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A magnitude 7.6 earthquake struck waters near Bitung, North Sulawesi, on Thursday morning at 06:48 Wita, triggering an early tsunami warning for North Sulawesi and North Maluku. Strong shaking was felt as far as Manado and Gorontalo, resulting in two casualties in Manado. BMKG confirmed the location at 1.25 N, 126.27 E, depth 62 km.
Researchers have found that the magma reservoir beneath Japan's Kikai caldera, site of the Holocene's largest eruption 7,300 years ago, is refilling with newly injected magma. Using underwater seismic imaging, a team led by Kobe University's Nobukazu Seama mapped the reservoir and linked it to the ancient event. The discovery offers insights into how such systems rebuild after massive eruptions.
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Researchers at Stanford University have developed the first worldwide map of rare earthquakes occurring deep in Earth's mantle, rather than the crust. These elusive events cluster in regions like the Himalayas and near the Bering Strait. The study, published on February 5 in Science, identifies hundreds of such quakes and introduces a new method to detect them using seismic waves.
Chile's National Seismological Center at the University of Chile recorded four earthquakes with magnitudes from 4.1 to 4.5 on Monday, March 23, across various regions. Most were imperceptible due to their depth and Chile's position at the Nazca and South American plates boundary. Senapred recalled basic safety guidelines for earthquakes.
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A new study reveals that a volcano south of Pavonis Mons on Mars formed through multiple eruptive phases powered by an evolving magma system, challenging earlier assumptions of a single eruption. Researchers used orbital imaging and mineral data to trace the volcano's development. The findings indicate Mars's interior was more active than previously thought.
New research has resolved a long-standing debate, confirming that the Silverpit Crater beneath the North Sea resulted from an asteroid strike about 43 to 46 million years ago. The impact generated a tsunami over 100 meters high. Led by Dr. Uisdean Nicholson of Heriot-Watt University, the study used seismic imaging and shocked minerals to provide definitive evidence.
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Researchers have identified two massive hot rock formations at the base of Earth's mantle that have influenced the planet's magnetic field for millions of years. Located about 2,900 kilometers beneath Africa and the Pacific Ocean, these structures create uneven heat at the core-mantle boundary. The discovery, based on ancient magnetic data and simulations, reveals variations in magnetic stability over vast timescales.