🇺🇸 영어 원문
Scientists have discovered an enormous body of magma deep beneath Tuscany, even though the region shows few of the surface clues typically associated with such systems. Using a seismic imaging method called ambient noise tomography, researchers detected approximately 6,000 km3 of volcanic fluids buried 8 to 15 km below the surface. (6,000 km3 equals the volume of 2.4 billion standard Olympic swimming pools.)
The international team included scientists from the University of Geneva (UNIGE), the Institute of Geosciences and Earth Resources (CNR-IGG), and the National Institute of Geophysics and Volcanology (INGV). Their findings, published in Communications Earth & Environment, could also help researchers locate geothermal reservoirs, lithium deposits, and rare earth elements connected to deep magmatic activity.
Some of the world’s best-known volcanic regions, including Yellowstone National Park in the United States, Lake Toba in Indonesia, and Lake Taupo in New Zealand, sit above magma reservoirs containing thousands of cubic kilometers of molten material.
Scientists usually identify these systems through visible or measurable evidence at the surface. Such clues can include ancient eruption deposits, volcanic craters, rising or sinking ground, and escaping gases. When those signs are absent, however, even enormous quantities of magma can remain undetected within Earth’s crust.
That appears to have happened in Tuscany. Researchers mapped approximately 6,000 km3 of volcanic fluids within the continental crust, extending across the region at depths ranging from 8 to 15 km.
Over geological timescales, a magma body of this size could theoretically play a role in the development of a supervolcano. Researchers emphasize, however, that the system does not currently represent a threat.
“We knew that this region, which extends from north to south across Tuscany, is geothermally active, but we did not realize it contained such a large volume of magma, comparable to that of supervolcanic systems such as Yellowstone,” explains Matteo Lupi, associate professor in the Department of Earth Sciences at UNIGE’s Faculty of Science, who led the study.
The team located the magma through ambient noise tomography, a technique commonly used by seismologists to examine structures hidden below the surface. The method functions like an “X-ray” of Earth’s crust by analyzing subtle vibrations continuously produced by ocean waves, wind, and human activity.
As these vibrations move through the ground, seismic instruments at the surface record how quickly the waves travel. The researchers deployed around 60 high-resolution sensors for the study. Seismic waves generally slow down when they pass through unusually hot or partially molten material. By identifying areas where the waves moved at lower velocities, the researchers were able to pinpoint the likely location of magma.
They then combined the measurements to create a three-dimensional reconstruction of the underground structures across the study area. The discovery has implications beyond understanding Tuscany’s geology. Because ambient noise tomography can survey large underground regions relatively quickly and inexpensively, it may provide a useful way to search for geothermal energy and mineral resources.
🇰🇷 한국어 요약
안녕하세요, 여러분! 오늘 소개할 뉴스는 이탈리아 토스카나(Tuscany) 지역 지하에서 발견된 놀라운 비밀에 관한 이야기입니다. 과학자들은 지진파를 이용한 특수 촬영 기술인 ‘환경 소음 단층 촬영법(ambient noise tomography)’을 사용해서, 지표면에서는 알 수 없었던 거대한 마그마(Magma) 저수지를 발견했어요. 그 양은 올림픽 수영장 24억 개 분량이나 된다고 합니다! 이 발견은 화산 폭발 위험을 평가하는 데 도움이 될 뿐만 아니라, 지열 에너지나 리튬 같은 자원 찾기도 도와줄 수 있어요. 현재 이 마그마 시스템은 위험하지 않지만, 지구 내부의 구조를 이해하는 데 중요한 발견입니다.
🔑 핵심 단어 (Vocabulary)
- Colossal – 거대한 – A colossal magma system has been hiding…
- Tomography – 단층 촬영법 – …ambient noise tomography…
- Reservoir – 저수지, 저장고 – …locate geothermal reservoirs…
- Crust – 지각 – …within Earth’s crust.
- Velocity – 속도 – …moved at lower velocities…
- Ambient – 주변의, 환경의 – …ambient noise tomography…
- Pinpoint – 정확하게 찾아내다 – …pinpoint the likely location…
- Geothermal – 지열의 – …is geothermally active…
- Implications – 의미, 영향 – The discovery has implications…
- Reconstruction – 재구성 – …three-dimensional reconstruction…
🔗 원문 링크
https://www.sciencedaily.com/releases/2026/08/260804034645.htm