Daikoku is a sumbarine volcano with a conical summit in the Japanese Volcano Islands chain. It sits on an elongated E-W-trending ridge SE of Eifuku submarine volcano and rises to within 323 m of the sea surface. It has a crater with a black pool of liquid sulfur discovered in 200... [mehr]
Fukujin volcano is one of the largest seamounts of the Marianas arc in Japan's Volcano Island chain. It sometimes has risen to above surface during eruptions creating temporary new islands. Water discoloration and floating pumice above the submarine volcano have been observed fre... [mehr]
Fukutoku-Okanoba is a submarine volcano 5 km NE of the small pyramidal island Minami-iwo-jima in the Japanese Volcano Island chain. Eruptions and submarine hydrothermal activity often cause water discoloration in the area, and during eruptions, the volcano has built several tempo... [mehr]
Satellite image of Fukutoku-Okanoa volcano (11 Feb 2010, NASA Earth Observatory)
Ioto (硫黄島, also known as Iwo-jima) volcano is a triangular-shaped, flat, 8 km long and up to 4.5 wide volcanic island stretching NE-SW. It is surrounded by steep cliffs under the sea, which belong to a 9-km-wide submarine caldera. The volcano is located 1250 km south of Tokyo in ... [mehr]
Kaikata Seamount is a basaltic-to-dacitic submarine volcano north of Kaitoku Seamount in the Japanese Volcano Islands. Kaitaka mountain rises 2350 m from the sea floor to within 162 m of the sea surface. It has 2 major summit peaks oriented NE-SW, with the SW peak being the highe... [mehr]
Kaitoku volcano (Kaitoku Kaizan) is a massive active seamount composed of 3 overlapping submarine volcanoes in the Japanese Volcano Islands chain, 130 km NW of Iwo-jima Island.
Its 3 peaks are 13-18 km apart and reach depths of 103 m (SW peak, also known as Nishi-Kaitokub... [mehr]
Kasuga volcano is a conical submarine volcano rising 3000 m from the ocean floor to a depth of 598 m, located SE of Fukujin submarine volcano in the Volcano Islands of Japan 1550 km SSE of Tokyo. It is the northernmost of 3 seamounts forming the Kasuga seamounts complex. The Kas... [mehr]
Kita-Fukutokutai is a newly recognized active submarine volcano halfway between Iwo-jima and Minami-Iwo-jima islands, ca. 1300 km south of Tokyo. [mehr]
Kita-Ioto (北硫黄島 officially Kita-iōtō, also frequently Kita-Iwo-jima, or Kita-iōjima, meaning "north sulfur island") is a steep-sided basaltic stratovolcano and forms a small island. It is the northernmost of the Kazan Retto (Volcano Islands) chain, in the center of the Izu-Marana... [mehr]
Minami Kasuga (South Kasuga, or Kasuga 2) is the central of 3 NNE-SSW trending volcanoes forming the Kasuga seamount chain, which trends SSE from the volcanic front of the Izu-Marianas arc.
The volcano rises from about 3000 m depth to within 170 m of the sea surface and is... [mehr]
Minami-Hiyoshi is a submarine volcano in Japan's chain of Volcano Islands, 1300 km south of Tokyo. Periodic water discolouration and water-spouting have been observed from the volcano since 1975, when detonations and an explosion were reported as well. [mehr]
Minami-Hiyoshi lies near the SE end of a coalescing chain of youthful seamounts and is the only historically active vent. The morphologically youthful seamount Naka-Hiyoshi (upper right) lies to the NW and Ko-Hiyoshi seamount (left) to the SSE. Image courtesy of HOD Japan Coast Guard (http://www1.kaiho.mlit.go.jp/jhd-E).
Nikko volcano is a large submarine volcano in the Volcano Islands chain of Japan. Discoloured water above the volcano has been observed almost every year between 1979 and 1990. [mehr]
Nishinoshima volcano (西之島, Nishi-no-shima meaning literally: Western Island, also: Rosario Island) is the tiny submerged part of a caldera in the northern Volcano Islands of Japan. The small 700 m wide island was significantly enlarged during the last eruption in 1974, which join... [mehr]
Nishi-no-shima on 18 Oct 2015 (Japanese Coast Guard)
NW Eifuku is a small submarine volcano in Japan's Volcano Island chain. It has vigorous thermal activity and white smokers at ca. 1500 m depth which were photographed during a NOOA expedition. [mehr]
White smokers in the submarine Champagne hydrothermal field (image courtesy of Submarine Ring of Fire 2006 Exploration, NOAA Vents Program)
A possible submarine volcano is located on the Ogasawara Plateau (3200 m depth) about 330 km NEN of Kita-Iwo-jima. A table of possible submarine eruptions by the Japanese Maritime Safety Agency included an entry of observed water discoloration due to submarine eruptions in this a... [mehr]