Niijima now larger than its older neighbour
We reported some months ago the new volcanic island being born off Japan as an undersea volcano breached the surface right next to an already existing neighbour (see http://tinyurl.com/oe22xtl). The eruption is still ongoing, and the islands have now joined, with newborn Niijima now outbulking its older sib Nishino-shima. The white line in the inset marks Niijima’s size at the end of December. The island is now over a km across and the volcanic cone is over 60m high, revealing the early part of the process by which these peaks slowly grow to huge size over many eruptions as long as magma remains available.
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Image credit: NASA