Axial Seamount (also Coaxial Seamount or Axial Volcano) is a seamount, submarine volcano, and underwater shield volcano [3] in the Pacific Ocean, located on the Juan de Fuca Ridge, approximately 480 km (298 mi) west of Cannon Beach, Oregon.

2 days ago · The Axial Seamount tends to expel "controlled" eruptions about a mile beneath the sea surface -- deep enough and far enough away from the coast that it won't threaten human lives, Scott Nooner, a ...

3 days ago · Axial Seamount's asymmetric magma plumbing in the upper crust. (Yang et al., Nature , 2025) "The reason for the connection between the high-melt zone and the focusing of eruptive fissures near the eastern caldera wall in 1998, 2011, and 2015 remains unclear," China University of Petroleum geophysicist Jidong Yang and colleagues write in their ...

1 day ago · The Axial Seamount is also not a part of the Cascadia Subduction Zone, which is the danger area in which experts believe an earthquake ominously nicknamed “The Big One” will one day strike.

2 days ago · The volcano, tucked underneath a submerged peak called Axial Seamount, is the most active volcano in the Pacific Northwest. Seismic activity, including hundreds of small earthquakes a day, indicate an eruption may be forthcoming — perhaps by the end of 2025, according to a blog kept by Bill Chadwick, a volcanologist who’s been closely ...

Jan 6, 2025 · Axial Seamount sits under the Pacific Ocean about 300 miles from the U.S. coast. Since 1997, scientists have kept a careful eye on it using instruments that measure pressure on the ocean floor. Data shows that the volcano has been swelling, with changing rates that hint at an upcoming eruption.

Named Axial Seamount, it’s more than a mile wide and stands 3,600 feet (1,100 metres) from the seafloor. One of the most active undersea volcanoes in the world, it has erupted three times over ...

Axial Seamount rises 700 m above the mean level of the central Juan de Fuca Ridge crest about 480 km W of Cannon Beach, Oregon, to within about 1.4 km of the ocean surface. The 3 x 8 km Axial caldera opens to the SE and is defined on three sides by caldera walls up to 150 m high.

Axial Seamount was the site of the world's first underwater volcano observatory called NeMO and has erupted most recently in 2015, 2011 and 1998. Because it is so active, Axial has been chosen as a key node on a new cabled observatory, which is part of the National Science Foundation’s Ocean Observatory Initiative (OOI).

Understanding Axial Seamount’s Unique Activity. Axial Seamount sits along the Juan de Fuca Ridge, a chain of underwater volcanoes stretching from Oregon to Alaska. It is a young shield volcano ...