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 Supervolcanoes Activity Report
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Details of Supervolcano
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| VEI Index: |
7 |
| Name: |
Aira Caldera |
| Volcano ID: |
0802-08= |
| Country: |
JPN |
| Location: |
Island of Kyushu |
| Diameter: |
~110 km³ |
| Last Eruption: |
~22,000 years ago |
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Aira Caldera is a gigantic volcanic caldera in the south of the island of Kyushu, Japan. The caldera was created by a massive eruption, approximately 22,000 years ago. The major city of Kagoshima and the 13,000 year old Sakurajima volcano lies within the caldera. Sakura-jima, one of Japan's most active volcanoes, is a post-caldera cone of the Aira caldera at the northern half of Kagoshima Bay. Eruption of voluminous pyroclastic flows accompanied formation of the 17 x 23 km wide Aira caldera at the eruption 22,000 years ago. Together with a large pumice fall, these amounted to more than 400 km3 of tephra (VEI 7). |
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Map of Supervolcano
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Latest seismic activity
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| Date |
Time |
Magnitude |
Depth |
| 2013-03-11 | 09:59:45 | 4.7 | 40 Km |
| 2013-03-11 | 09:34:49 | 5.3 | 10 Km |
| 2013-03-11 | 09:34:52 | 5.3 | 32.80 Km |
| 2013-03-11 | 05:34:59 | 4.8 | 172 Km |
| 2013-03-11 | 05:34:58 | 4.8 | 163.80 Km |
| 2012-10-16 | 13:39:26 | 5.2 | 171.90 Km |
| 2012-10-16 | 13:39:26 | 5.3 | 169 Km |
| 2012-08-16 | 23:46:47 | 5.0 | 10 Km |
| 2012-08-16 | 23:46:49 | 5.0 | 24.00 Km |
| 2012-07-25 | 17:20:11 | 4.9 | 135 Km |
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