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.

Jan 29, 2025 · 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 ...

Feb 3, 2025 · Axial Seamount is a shield volcano, which means it's shaped like a shield rather than a steep-sided cone volcano. Its caldera at the top is a few miles wide and long, and about 300 feet deep. 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 ...

Jan 28, 2025 · 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 ...

Jan 28, 2025 · 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 9, 2025 · The Axial Seamount, located 300 miles from the state’s coast and one mile beneath the Pacific Ocean’s surface, has been swelling at a steady rate for the past six months, with seismic activity ...

Axial Seamount is the most active submarine volcano in the NE Pacific. It rises to a depth of 1400 m below sea level and is located about 300 miles off the coast of Oregon. 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.

Jan 29, 2025 · 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.

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 1,400 m of the ocean surface. It is the most magmatically and seismically active site on the Juan de Fuca Ridge between the Blanco Fracture Zone and the Cobb offset.

Axial Seamount is the most robust volcanic system on the Juan de Fuca Ridge and it is seismically, magmatically, and hydrothermally active. It is located on the Juan de Fuca spreading center and hosts three active hydrothermal fields (ASHES, CHASM, and CASTLE).