Saturday, January 27, 2018

ring of fire

Starting 2018 with a bang! Lots of unrest along the Pacific "Ring of Fire".

Here is a map of tectonic plates and active volcanoes (red dots). ~ US Geological Survey

Most observed volcanic activity takes place along the Pacific Ring of Fire, a region around the Pacific Ocean where several tectonic plates meet, causing earthquakes and a chain of what geologists call subduction zone volcanoes.

Other eruptions occur at volcanoes within continental interiors such as Ol Doinyo Lengai in Tanzania or on oceanic islands like Hawaii.

Many also take place hidden from view on the sea floor, with some of the most active underwater volcanoes located in the Tonga-Kermadec island arc in the south-west Pacific.

As well as Agung in Bali, here is a list of some volcanoes to keep an eye on:

Kirishima, Japan
One of Japan’s less known but most active volcanoes, Kirishima, is a group of several volcanic cones with eruptions recorded on and off since 742.

Merapi, Indonesia
Merapi is one of the most dangerous volcanoes in Indonesia due to its frequent eruptions and densely populated slopes.

Öræfajökull, Iceland
This ice-covered volcano has erupted twice since the early settlement of Iceland, including the country’s largest-ever explosive eruption in 1362 and another in 1727-28.

Popocatépetl, Mexico
Mexico’s “smoking mountain”, pictured at the top of this article, lies 70km south-east of Mexico City and is the country’s most active volcano.

Villarrica, Chile
Snow-covered Villarrica volcano is one of only a small number of volcanoes around the world with an active lava lake.

Kilauea, Hawaii
Kilauea volcano on Hawaii’s Big Island has spewed basaltic lava almost continuously for 35 years and there is no reason to expect this eruption will end any time soon.

For now, authorities in the Philippines are expanding the evacuation zone around Mayon to five miles, warning locals that a major eruption could be imminent.

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