Axial Volcano is located on the Juan de Fuca Ridge at about 46ºN, 130ºW. The Cobb-Eickelberg seamount chain intersects the Juan de Fuca Ridge axis (Delaney et al., 1981). The volcano is elongate with a summit region between two rift zones that extend north and south. The summit is characterized by a horseshoe-shaped caldera (3 x 8 kilometers) that is open towards the southeast. Hydrothermal vents and deposits are common inside the caldera (e.g., Embley and Chadwick, 1994). An eruption took place on the southeastern edge of the caldera in 1998 (Embley et al., 1999). Numerous previous surveys of Axial Volcano (e.g., Embley et al., 1990; Applegate, 1990; Applegate and Embley, 1992) and continued monitoring efforts by the National Oceanic and Atmospheric Administration (NOAA) have provided great detail about the geology and activity of the volcano.
More information about NOAA monitoring is available at: http://www.pmel.noaa.gov/vents/nemo/index.html .
More background on Axial Volcano is available at: http://www.pmel.noaa.gov/vents/geology/axial.html .
The survey presented here is the highest-resolution, best-navigated survey of this feature and provides a base for measuring future changes in the volcano. The survey was already used with previous surveys to define the location and size of the 1998 eruption on the upper part of the south rift (Embley et. al., 1999).
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MBARI provides these data "as is", with no warranty, express or implied, of the data quality or consistency. Data are provided without support and without obligation on the part of the Monterey Bay Aquarium Research Institute to assist in its use, correction, modification, or enhancement.
Axial Volcano perspective views
|From the southeast
|From the south
Axiel Volcano data—40 meter
grid cell size
|Grid||Sun Illuminated Image||Acoustic
at 1/2 grid cell size
|Index Map||Axial Volcano||Gorda Ridge||Cleft Segment||Taney Seamounts|
|Guide, Gumdrop, Pioneer Seamounts||Mendocino Fracture Zone||President Jackson Seamount||Davidson Seamount||Vance Seamounts|