Daikoku Seamount | U.S. Geological Survey Official websites use .gov .gov website belongs to an official government organization in the United States. Secure .gov websites use HTTPS lock ( or means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites. Daikoku Seamount Find U.S. Volcano Filters The map displays volcanoes, earthquakes, monitoring instruments, and past lava flows. Get Help Earthquake Plots To view an earthquake cross-sectional plot, click "Draw Plot" to start drawing on the map. Once the plot area is selected, click on "View Plot" to view chart or "Clear Plot" to start over. Map Layers Earthquake Colors Earthquake Depth Units Earthquake Time Units Results Filters The map displays volcanoes, earthquakes, monitoring instruments, and past lava flows. Get Help Earthquake Plots To view an earthquake cross-sectional plot, click "Draw Plot" to start drawing on the map. Once the plot area is selected, click on "View Plot" to view chart or "Clear Plot" to start over. Settings Map Layers Earthquake Colors Earthquake Depth Units Earthquake Time Units Map Legend Map Legend Results Daikoku Seamount Publications Connect Daikoku seamount lies in the Northern Seamount Province of the Mariana Arc, and is about 850 km north of Guam in the western Pacific Ocean. Facts Block Location: Commonwealth of the Northern Mariana Islands Latitude: 21.324° N Longitude: 144.194° E Elevation: -323 (m) -1060 (f) Volcano type: Submarine Composition: Andesite Most recent eruption: unknown Threat Potential: Very low* *based on the National Volcano Early Warning System The conical summit of Daikoku seamount lies along an E-W ridge SE of Eifuku and rises to within 323 m of the sea surface. A steep-walled, 50-m-wide crater on the N flank, about 75 m below the summit, is at least 135 m deep and was observed to emit cloudy hydrothermal fluid. During a NOAA expedition in 2006, scientists observed a convecting black pool of liquid sulfur with a partly solidified, undulating sulfur crust at a depth of 420 m below the summit. Gases, particulates with the appearance of smoke, and liquid sulfur were bubbling up from an edge of the sulfur pool. From the Smithsonian Global Volcanism Program Facts Block Location: Commonwealth of the Northern Mariana Islands Latitude: 21.324° N Longitude: 144.194° E Elevation: -323 (m) -1060 (f) Volcano type: Submarine Composition: Andesite Most recent eruption: unknown Threat Potential: Very low* *based on the National Volcano Early Warning System Volcanoes Hazards Program Links Assess Prepare Forecast Activity Products Observatories About Was this page helpful?