Kasuga 1 Volcano
Updated: Sep 12, 2025 20:08 GMT -
Submarine
Marianas Islands, United States, 21.77°N / 143.71°E 
Summit height: -598 m / -1962 ft
Current status: (probably) extinct (0 out of 5)
Kasuga 1 is the northernmost of three seamounts in the Kasuga seamount chain. It rises to within about 600 m of the sea surface. Pumice from a submarine eruption was witnessed in 1959. (Image: NOAA, 2003, http://oceanexplorer.noaa.gov/explorations/03fire/logs/mar02/media/kasuga.html)
The Kasuga 1 seamount is a conical volcano that rises to within 598 m of the sea surface SE of Fukujin submarine volcano. It was listed as an active volcano by the Japan Meteorological Agency, and floating pumice attributed to a submarine eruption was seen south of the volcano in the summer of 1959.
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Kasuga 1 volcano eruptions: 1959
Latest nearby earthquakes
| Date and Time | Mag / Depth | Distance / Location | |||
|---|---|---|---|---|---|
Background
Water discoloration from a possible submarine eruption was reported near the seamount in November 1975. Kasuga, the northernmost of three seamounts in the the Kasuga seamount chain, rises from a depth of 3000 m. A series of flank vents are located low on the southern side of the edifice. The summit does not have a caldera or display hydrothermal activity, and the volcano is largely mantled by volcaniclastics. Altered basaltic and andesitic rocks dredged from the summit suggest that it is the oldest of the three seamounts, although delicately preserved lava flow lobes and toes from a flank eruption suggest a very youthful age.Significant volcanic eruptions: Kasuga 1 volcano
In the past 10,000 years, Kasuga 1 has had only one confirmed historic eruption in 1959. There is one uncertain or discredited eruption in 1975 from Kasuga 1 volcano.
The table below lists all known eruptions (date in bold face) of Kasuga 1 volcano in historic times and during the past 10,000 years. Updates on the most recent volcanic activity of Kasuga 1 can be found on the news page of Kasuga 1 volcano.
| Date | Note | VEI | Deaths | Damage | |
|---|---|---|---|---|---|
?? | Uncertain Eruption | 0 | |||
Historical obs./docs. | 0 | ||||
Remark:
Our list of volcanic eruptions closely follows the database of eruptions of the Smithsonian's Global Volcanism Project (GVP), the internationally most recognized data source for volcanic eruptions, but also includes significant eruptive episodes or related volcano events. "Volcanic eruptions" are usually to be understood as sequences of individual eruptive episodes that can follow each other, or even overlap (if several vents are involved), and can last many years, decades or even longer. For example, the current activity of Stromboli volcano is understood as a single eruption that has been ongoing since 1934.
Sources: NOAA National Centers for Environmental Information (NCEI), Global Significant Volcanic Eruptions Database. doi:10.7289/V5TD9V7K | Global Volcanism Project / Smithsonian Institution
Kasuga 1 Volcano FAQ
+When was the last eruption of Kasuga 1 volcano?
The last confirmed eruption of Kasuga 1 occurred in 1959.
+How often does Kasuga 1 volcano erupt?
There are no known historic eruptions, but evidence from geologic records shows that it has had at least 1 eruptions over the past 10,000 years. This number is likely much higher because many past eruptions might not have left evidence recognizeable today and/or the volcano might not have been studied in too much detail. Using the available data, a very conservative estimate is that Kasuga 1 volcano erupts every 10,000 years.
+How active is Kasuga 1 volcano at present?
Kasuga 1 volcano is occasionally active: Since 1900, it has had one eruption, which occurred in 1959.
Latest satellite images
Kasuga 1 Volcano Maps
Below is a selection of maps showing the location and surroundings of the volcano at various resolutions based on aerial-imagery / terrain maps. Feel free to use them for non-commercial purposes on your blog or website as long as you credit them with a link back to this page (click to copy it).
Satellite/aerial-type map of Kasuga 1 volcano (world scale)
Terrain-type map of Kasuga 1 volcano (world scale)
Satellite/aerial-type map of Kasuga 1 volcano (region scale large)
Terrain-type map of Kasuga 1 volcano (region scale large)
Satellite/aerial-type map of Kasuga 1 volcano (region scale medium)
Terrain-type map of Kasuga 1 volcano (region scale medium)
Satellite/aerial-type map of Kasuga 1 volcano (region scale small)
Terrain-type map of Kasuga 1 volcano (region scale small)
Satellite/aerial-type map of Kasuga 1 volcano (local scale large)
Terrain-type map of Kasuga 1 volcano (local scale large)
Satellite/aerial-type map of Kasuga 1 volcano (local scale medium)
Terrain-type map of Kasuga 1 volcano (local scale medium)
Satellite/aerial-type map of Kasuga 1 volcano (local scale small)
Terrain-type map of Kasuga 1 volcano (local scale small)
Satellite/aerial-type map of Kasuga 1 volcano (scale of 10s of km)
Terrain-type map of Kasuga 1 volcano (scale of 10s of km)
Satellite/aerial-type map of Kasuga 1 volcano (scale of 20-40 km)
Terrain-type map of Kasuga 1 volcano (scale of 20-40 km)
Satellite/aerial-type map of Kasuga 1 volcano (scale of approx. 10-20 km)
Terrain-type map of Kasuga 1 volcano (scale of approx. 10-20 km)
Satellite/aerial-type map of Kasuga 1 volcano (scale of 5-10 km)
Satellite/aerial-type map of Kasuga 1 volcano (scale of few kilometers)
