Do volcanoes occur in the ocean?
Posted by Ocean Facts on 30 January, 2009
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Volcanic eruptions occur only in certain places and do not occur randomly. This is because the Earth’s crust is broken into a series of slabs known as tectonic plates. These plates are rigid, but they “float” on a hotter, softer layer in the Earth's interior. As the plates move, they spread apart, collide, or slide past each other.
Sixty percent of all active volcanoes occur at the boundaries between tectonic plates. Most volcanoes are found along a belt, called the “Ring of Fire” that encircles the Pacific Ocean. Some volcanoes, like those that form the Hawaiian Islands, occur in the interior of plates at areas called “hot spots.”
Although most of the active volcanoes we see on land occur where plates collide, the greatest number of the Earth's volcanoes are hidden from view, occurring on the ocean floor along spreading ridges.
For more information:
Teachers Guide to Stratovolcanoes of the World
New Zealand American Submarine Ring of Fire 2007, NOAA Ocean Explorer
Submarine Ring of Fire 2004, NOAA Ocean Explorer
'Kick'em Jenny' Volcano, NOAA Ocean Explorer
...
Sixty percent of all active volcanoes occur at the boundaries between tectonic plates. Most volcanoes are found along a belt, called the “Ring of Fire” that encircles the Pacific Ocean. Some volcanoes, like those that form the Hawaiian Islands, occur in the interior of plates at areas called “hot spots.”
Although most of the active volcanoes we see on land occur where plates collide, the greatest number of the Earth's volcanoes are hidden from view, occurring on the ocean floor along spreading ridges.
For more information:
Teachers Guide to Stratovolcanoes of the World
New Zealand American Submarine Ring of Fire 2007, NOAA Ocean Explorer
Submarine Ring of Fire 2004, NOAA Ocean Explorer
'Kick'em Jenny' Volcano, NOAA Ocean Explorer
...