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Long-term deformation monitoring at Axial Seamount, NE Pacific


IPGP - Îlot Cuvier


Séminaires Géosciences Marines

Visio Zoom

William Chadwick

Oregon State University

Axial Seamount is a submarine basaltic hot spot volcano with a summit caldera at a depth of ~1500 m, superimposed on the Juan de Fuca spreading ridge offshore the northwest coast of the USA, giving it a robust and continuous magma supply. Axial erupted in 1998, 2011, and 2015, and is monitored by instruments connected to the US Ocean Observatories Initiative Cabled Array. Geodetic measurements have been conducted at Axial Seamount since the late 1980’s with bottom pressure recorders (BPRs) that can detect vertical movements of the seafloor. This talk will review what we’ve learned from deformation monitoring and how it relates to seismicity and the magma supply and storage system at the volcano. Please join the meeting following the link: Join Zoom Meeting Meeting ID: 914 8946 1781 Passcode: Geo2021