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Axial Seamount is one of the most observed underwater volcanoes in the world (Getty Images) ... the underwater shield volcano last erupted in 2015, following previous eruptions in 1998 and 2011 ...
Unlike other volcanoes around the world that can go centuries between eruptions, this one can be measured in years. The most recent eruptions occurred in 1998, 2011 and 2015.
In September 2013, Sager and his team concluded that Tamu Massif is "the biggest single shield volcano ever discovered on Earth". Other igneous features on the planet are larger, such as the Ontong Java Plateau, but it has not yet been determined if they are indeed just one volcano or rather complexes of several volcanoes. [6]
Before the 2022 eruption, the volcano's caldera was roughly 150 m below sea-level, and had a size of 4 × 2 km. [7] Its northern and southern portions were filled by volcanic deposits from previous eruptions. [7] Before the 2015 eruption, the two subaerial islands were about 1.6 km (0.99 mi) apart, [12] and were each about 2 km (1.2 mi) long.
A volcano on an uninhabited island in the Galapagos has begun erupting, lighting up the nighttime sky as lava tumbled down its sides toward the sea. The La Cumbre volcano on Fernandina island ...
The eruption was the largest explosion recorded in the atmosphere by modern instrumentation, far larger than any 20th-century volcanic event or nuclear bomb test. It is thought that in recent centuries, only the Krakatoa eruption of 1883 rivalled the atmospheric disturbance produced.
People watch and record images of lava from the Mauna Loa volcano Thursday, Dec. 1, 2022, near Hilo, Hawaii. (AP Photo/Gregory Bull) After Mauna Loa, also known as the world's largest active ...
Map of world's major seamounts. A list of active and extinct submarine volcanoes and seamounts located under the world's oceans. There are estimated to be 40,000 to 55,000 seamounts in the global oceans. [1] Almost all are not well-mapped and many may not have been identified at all. Most are unnamed and unexplored.