US EditionJapan's Kikai Supervolcano is Refilling with Magma, Study Finds
Researchers used seismic imaging and chemical analysis to confirm fresh magma injection refilling the Kikai Caldera reservoir, improving understanding of supervolcano recharge cycles.
- Researchers at Kobe University discovered that Japan's Kikai Caldera Volcano is actively refilling its magma reservoir, nearly 7,300 years after its last catastrophic eruption.
- Chemical analysis shows the magma is newly injected rather than leftover material from the ancient eruption, with a new lava dome forming at the caldera's center over the last 3,900 years.
- Using airgun arrays and ocean-bottom seismometers, scientists mapped the reservoir's size and shape, discovering it sits at depths between 2.5 and 6 kilometers beneath the seafloor.
- This re-injection model aligns with evidence of large, shallow magma systems beneath other giant calderas, including Yellowstone National Park in the United States and Toba in Indonesia.
- Kobe University geophysicist Nobukazu Seama noted that refining monitoring methods is essential for understanding magma supply cycles and better predicting future giant eruptions.
12 Articles
12 Articles
Melt re-injection into large magma reservoir after giant caldera eruption at Kikai Caldera Volcano - Communications Earth & Environment
Melt re-injection after a giant caldera eruption was quantitatively investigated for the Kikai Caldera Volcano in Japan, which erupted 7300 years ago (Kikai-Akahoya eruption). Our seismic refraction survey revealed a low-velocity anomaly directly beneath the Kikai Caldera Volcano, indicating the existence of a large magma reservoir at a shallow depth of 2.5–6 km. The reservoir can be approximated by a trapezoidal shape in this 2D section, with i…
How do giant caldera volcanoes fill up?
The magma reservoir of the largest volcano eruption of the Holocene is refilling. This Kobe University insight on the Kikai caldera in Japan allows us to understand giant caldera volcanoes like Yellowstone or Toba more generally and gets us closer to predicting their behavior, too.
This Supervolcano Is Refilling With Magma After 7,300 Years
A supervolcano that once shook the Earth is quietly recharging—and scientists are finally seeing how it happens. Scientists have found that the magma reservoir linked to the largest volcanic eruption of the Holocene is filling again. The discovery, led by Kobe University researchers studying Japan’s Kikai caldera, offers new insight into how massive caldera systems [...]
Japan Supervolcano Shows Clear Signs Of Magma Refill
The Kikai caldera south of Japan is the site of one of the most powerful eruptions in the current geological era. Around 7,300 years ago, it produced a VEI-7 eruption that expelled more than 150 cubic kilometers of material. Pyroclastic flows moved at high speed across land and sea, ash spread across wide areas, and […] The post Japan Supervolcano Shows Clear Signs Of Magma Refill appeared first on Above The Norm News.
How do giant caldera volcanoes fill up? | Kobe University News site
The magma reservoir of the largest volcano eruption of the Holocene is refilling. This Kobe University insight on the Kikai caldera in Japan allows us to understand giant caldera volcanoes like Yellowstone or Toba more generally and gets us closer to pred
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