Fukujin

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  • Country
  • Volcanic Region
  • Primary Volcano Type
  • Last Known Eruption
  • 21.93°N
  • 143.47°E

  • -217 m
    -712 ft

  • 284133
  • Latitude
  • Longitude

  • Summit
    Elevation

  • Volcano
    Number

Most Recent Bulletin Report: December 1990 (BGVN 15:12)


No water discoloration seen in 1990

No discolorations were observed at . . . Fukujin . . . during 1990.

Information Contacts: Hydrographic Department, JMSA.

The Global Volcanism Program has no Weekly Reports available for Fukujin.

Index of Bulletin Reports


Reports are organized chronologically and indexed below by Month/Year (Publication Volume:Number), and include a one-line summary. Click on the index link or scroll down to read the reports.

01/1974 (CSLP 11-74) Explosive activity detected by hydrophone began in September 1973

02/1974 (CSLP 11-74) Steam plume seen by fishing boats; active bubbling and water discoloration

03/1974 (CSLP 11-74) Underwater sound signals essentially terminated on 26 January

01/1977 (NSEB 02:01) Possible submarine eruption in March 1974

02/1977 (NSEB 02:02) Zone of discolored water observed from the air

05/1978 (SEAN 03:05) Discolored water in October 1977 and January 1978

07/1979 (SEAN 04:07) Occasional water discoloration during 1978-79

04/1980 (SEAN 05:04) Water discoloration in late 1979 and early 1980

11/1980 (SEAN 05:11) Water discoloration seen on 12 May 1980

12/1980 (SEAN 05:12) No seawater discoloration seen in November-December 1980

10/1981 (SEAN 06:10) Water discoloration seen in January 1981, but then none through October

09/1982 (SEAN 07:09) Occasional water discoloration every year since 1977

03/1984 (SEAN 09:03) No water discoloration seen since December 1982

11/1985 (SEAN 10:11) No water discoloration observed, December 1983-December 1985

12/1990 (BGVN 15:12) No water discoloration seen in 1990




Bulletin Reports

All information contained in these reports is preliminary and subject to change.


01/1974 (CSLP 11-74) Explosive activity detected by hydrophone began in September 1973

Card 1778 (21 January 1974) Explosive activity detected by hydrophone began in September 1973

"So far hydrophone records from Wake and Midway Islands indicate a sustained submarine volcanic eruption near 22°N, 144°E. Eruption noise was first detectable about 1800 GMT, 25 September 1973 and was continuing unabated as of 14 January 1974. The activity was explosive. The indicated location is about 40 km N of a similarly detected submarine eruption site of 6-7 July 1972." The subject area is approximately 250 miles (400 km) SE of Iwo Jima, and 580 miles (935 km) N of Guam.

Information Contacts: Rockne Johnson, Hawaii Institute of Geophysics, Honolulu, Hawaii, USA.

02/1974 (CSLP 11-74) Steam plume seen by fishing boats; active bubbling and water discoloration

Card 1794 (11 February 1974) Steam plume seen by fishing boats; active bubbling and water discoloration

The following information was reported from fishing boats and the Maritime Self Defence Force on a submarine eruption between the Volcano Islands and Mariana Islands. Location: 21°55'30"N and 143°26'30"E, about 400 km S of Minami-iozima. It is called Hukuzin-okaba, a submarine, but shallow site.

A fishing boat, the Tatumimaru No. 18 reported a submarine eruption on 18 January as follows: 2-3-mile-high white smoke with a strong smell of sulfur rose from several points on the sea-surface around 0600 JST. Another fishing boat, the Anyomaru No. 10 also reported on the same day: 2-3-mile-high white smoke was seen in the same area starting in the early morning. One water plume (about 70 m across and 20 m high) shot up with rumblings at about 1125 JST on 18 January.

According to an aerial observation made by the Maritime Self Defence Force at 1040 JST on 25 January, active bubbling under the sea-surface from four points in an area about 100 m in diameter was observed at the point 21°52'N and 143°33'E, about 320 km S of Minami-Iozima. A discolored belt on the sea-surface, about 10 km long and 600 km wide, was floating westward.

Information Contacts: Seismological Division, Japan Meteorological Agency.

03/1974 (CSLP 11-74) Underwater sound signals essentially terminated on 26 January

Card 1832 (29 March 1974) Underwater sound signals essentially terminated on 26 January

R.H. Johnson reported that "underwater sound signals from the eruption near 22°N, 144°E, essentially terminated on 26 January about 1600 GMT, although sporadic signals were detected on 27 and 28 January. Hydrophone records to 2000 GMT 1 February show no sign of a resumption of submarine activity."

The Japan Meteorological Agency noted that "according to a report from a fishing boat, Zintoku-maru No. 12, on 22 February a submarine eruption with a 1-m-high plume and a 2-km-long discolored belt on the sea-surface was observed at a point 400 km SE of Iozima."

Information Contacts: R.H. Johnson, Hawaii Institute of Geophysics, USA; Seismological Division, Japan Meteorological Agency.

01/1977 (NSEB 02:01) Possible submarine eruption in March 1974

[A table of possible submarine eruptions based on aerial observations of water discoloration by the Japanese Maritime Safety Agency included an entry for 21.93°N, 143.46°E, on 20 March 1974. This location is just E of Fukujin]

Information Contacts: AFP; U.S. Defense Mapping Agency.
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02/1977 (NSEB 02:02) Zone of discolored water observed from the air

A yellowish-green zone of discolored water was observed from the air at this site on 3 December 1976. By 11 February 1977, activity had declined. The strongest recent activity occurred on 15 October 1973, when explosions intermittently ejected a "smoke" cloud containing blocks to 50-80 m above the ocean surface. Explosions were reported by fishing boats on 18 January and 20 February 1974 and discoloration of water on several other occasions.

The JMSA ship Syoko visited the area in August 1976 and reported a conical submarine volcano rising 3,000 m from the ocean floor. A depth of 3 m was recorded by a fishing boat on 20 March 1974.

Information Contacts: JMA, Tokyo; Japanese Press.
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05/1978 (SEAN 03:05) Discolored water in October 1977 and January 1978

Discolored water was seen 14 October and 10, 24, and 26 January. Five greenish circular spots were observed on 10 January and eruptions occurred about once every 2 minutes on 24 January.

Information Contacts: JMA, Tokyo.
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07/1979 (SEAN 04:07) Occasional water discoloration during 1978-79

Discolored water was occasionally visible over Fukujin, previously called Hukuzin-oka-no-ba, in 1977, 1978, and 1979. [Discolored water was specifically noted, in an included table of observations during January 1978-July 1979, on 10, 24, 25, and 26 January 1978, 24 March 1978, 25 August 1978, 26 April 1979, and 12 July 1979.]

Information Contacts: JMA, Tokyo.
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04/1980 (SEAN 05:04) Water discoloration in late 1979 and early 1980

The Japan Maritime Safety Agency continues frequent monitoring flights over three known submarine volcanoes. [Discolored water at Fukujin was seen during October 1979-March 1980 (see table 1 below).]

Information Contacts: JMSA, Tokyo; JMA, Tokyo.
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11/1980 (SEAN 05:11) Water discoloration seen on 12 May 1980

The Japan Maritime Safety Agency (JMSA) continues frequent monitoring flights over several known submarine volcanoes. [Discolored water at Fukujin was seen during May 1980 (see table 1 below).]

Information Contacts: JMSA, Tokyo; JMA, Tokyo.
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12/1980 (SEAN 05:12) No seawater discoloration seen in November-December 1980

The Japanese Maritime Safety Agency (JMSA) continues frequent aerial monitoring of several known submarine volcanoes. [Discolored water was not seen at Fukujin during November-December 1980 (see table 1 below).]

Information Contacts: JMSA, Tokyo; JMA, Tokyo.
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10/1981 (SEAN 06:10) Water discoloration seen in January 1981, but then none through October

The Japan Maritime Safety Agency (JMSA) continues frequent monitoring flights over several known submarine volcanoes. [Discolored water was specifically noted, in an included table of observations, on 7 and 8 January, but not again through October 1981 (see table 1 below).]

Information Contacts: JMSA, Tokyo; JMA, Tokyo.
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09/1982 (SEAN 07:09) Occasional water discoloration every year since 1977

JMSA [and JMSDF have] continued frequent monitoring flights over several known submarine volcanoes (table 1). Discoloration has been seen occasionally over Fukujin each year since 1977. Analysis of Landsat satellite multi-spectral scanner data revealed discolored water there in January 1982, after a year of quiescence.

Table 1. Volcanic activity at three sites in the Volcano Islands, January 1978-December 1982, detected by JMSA and JMSDF monitoring flights. Activity indicated as D = Discolored water; N = No discolored water, - = No overflight, ? = not reported. This table combines data from 4:7, 5:4, 5:11, 5:12, 6:10, and 7:9, plus additional 1982 data not published in the Bulletin.

    Date         Fukutoku-okanoba    Minami-Hiyoshi    Fukujin

    10 Jan 78           D                  N               D
    24 Jan 78           D                  N               D
    25 Jan 78           D                  -               D
    26 Jan 78           -                  D               D
    23 Feb 78           D                  D               N
    24 Mar 78           D                  D               D
    13 Apr 78           D                  N               N
    25 May 78           D                  N               N
    28 Jun 78           D                  -               -
    29 Jun 78           D                  N               N
    25 Aug 78           D                  N               D
    24 Oct 78           N                  N               N
    15 Nov 78           D                  -               -
    16 Nov 78           D                  N               N
    14 Dec 78           D                  N               N

    11 Jan 79           D                  -               -
    24 Jan 79           D                  N               N
    08 Feb 79           D                  N               N
    27 Mar 79           D                 [N]              -
    26 Apr 79           D                  N               D
    15 Jun 79           N                  N               N
    11 Jul 79           N                  -               -
    12 Jul 79           D                  N               D
    24 Aug 79           N                  N               -
    09 Sep 79           D                  -               -
    13 Sep 79           D                  N               N
    25 Oct 79           D                  N               D
    08 Nov 79           D                  N               D
    12 Dec 79           D                  N               D

    29 Jan 80           -                  -               D
    15 Feb 80           D                  N               D
    19 Mar 80           D                  N               D
    24 Apr 80           D                  N               N
    12 May 80           D                  -               D
    16 Jun 80           D                  N               N
    07 Jul 80           D                  -               -
    08 Jul 80           D                  N               N
    14 Jul 80           D                  N               N
    18 Aug 80           N                  N               N
    04 Sep 80           N                  N               N
    21 Oct 80           N                  N               N
    14 Nov 80           D                  N               N
    18 Dec 80           D                  N               N

    07 Jan 81           -                  -               D
    08 Jan 81           -                  -               D
    09 Jan 81           D                  N               N
    29 Jan 81           D                  -               -
    12 Feb 81           D                 [-]              -
    20 Feb 81           D                 [N]              N
    12 Mar 81           D                 [-]              -
    13 Mar 81           D                  N               N
    16 Mar 81           D                  N               N
    20 Apr 81           D                  N               N
    17 Jun 81           N                  N               N
    16 Jul 81           D                  -               -
    17 Jul 81           D                 [N]             [N]
    22 Jul 81           D                  N               N
    17 Aug 81           D                  N               N
    17 Sep 81           D                  N               N
    19 Oct 81           N                  N               N
    11 Nov 81           N                  N              [-]
    21 Dec 81           D                  N               N

    12 Jan 82           -                  -               D
    19 Jan 82           D                  N               D
    09 Feb 82           D                  N               N
    28 Feb 82           D                  -               -
    16 Mar 82           D                  N               D
    01 Apr 82           D                  -               N
    02 Apr 82           D                  N               N
    16 Apr 82           D                  N               N
    14 May 82           D                  N               N
    16 Jun 82           D                  N               N
    22 Jun 82           D                  -               -
    13 Jul 82           D                  ?               N
    20 Aug 82           D                  ?               N
    27 Sep 82           D                  ?               N
    13 Oct 82           D                  ?               N
    17 Nov 82           D                  ?               N
    15 Dec 82           D                  ?               D

Information Contacts: JMSA, Tokyo; JMA, Tokyo.
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03/1984 (SEAN 09:03) No water discoloration seen since December 1982

Frequent monitoring of several known submarine volcanoes has continued. . . . No discolored water has been observed at Fukujin since December 1982.

Information Contacts: JMA, Tokyo.
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11/1985 (SEAN 10:11) No water discoloration observed, December 1983-December 1985

JMSA has continued frequent aerial monitoring of several known submarine volcanoes. Volcanic activity has often been observed at Fukutoku-okanoba during overflights since late 1983, but no water discoloration has been seen at Kasuga, Nikko, or Fukujin.

Information Contacts: JMA, Tokyo.
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12/1990 (BGVN 15:12) No water discoloration seen in 1990

No discolorations were observed at . . . Fukujin . . . during 1990.

Information Contacts: Hydrographic Department, JMSA.
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One of the larger of the submarine volcanoes of the Marianas arc, Fukujin seamount has risen on occasion to just beneath the sea surface. Intermittent periods of water discoloration have been observed since the mid-20th century, and eruptions producing floating pumice were noted on several occasions.

Summary of Holocene eruption dates and Volcanic Explosivity Indices (VEI).

Start Date Stop Date Eruption Certainty VEI Evidence Activity Area or Unit
[ 1982 Dec 15 ] [ Unknown ] Uncertain 0  
[ 1982 Jan 12 ] [ 1982 Mar 16 ] Uncertain 0  
[ 1981 Jan 7 ] [ 1981 Jan 8 ] Uncertain 0  
[ 1979 Apr 26 ] [ 1980 May 12 ] Uncertain 0  
[ 1978 Aug 24 ] [ 1978 Aug 25 ] Uncertain 0  
[ 1977 Oct 14 ] [ 1978 Mar 24 ] Uncertain 0  
[ 1976 Aug 2 ] [ 1977 Apr 21 ] Uncertain 0   21.95 N 143.45 E
1973 Sep 27 1974 Mar 5 Confirmed 1 Historical Observations 21.93 N 143.46 E
1968 Sep Unknown Confirmed 0 Historical Observations
[ 1959 Aug ] [ 1959 Oct ] Uncertain 0  
[ 1958 Aug ] [ 1958 Sep ] Uncertain 0  
[ 1952 ] [ Unknown ] Uncertain 0  
1951 Jul 15 ± 45 days 1951 Oct 15 ± 45 days Confirmed 0 Historical Observations

This compilation of synonyms and subsidiary features may not be comprehensive. Features are organized into four major categories: Cones, Craters, Domes, and Thermal Features. Synonyms of features appear indented below the primary name. In some cases additional feature type, elevation, or location details are provided.


Synonyms

Hukuzin-Okaba | Hukuzin-Okanoba | Hukuzin-kaizan | Fukujin-okanoba | Fukujin-kaizan

The Global Volcanism Program has no photographs available for Fukujin.

The following references have all been used during the compilation of data for this volcano, it is not a comprehensive bibliography. Discussion of another volcano or eruption (sometimes far from the one that is the subject of the manuscript) may produce a citation that is not at all apparent from the title.

Bloomer S H, Stern R J, Fisk E, Geschwind C H, 1989. Shoshonitic volcanism in the northern Mariana Arc 1. Mineralogic and major and trace element characteristics. J Geophys Res, 94: 4469-4496.

Bloomer S H, Stern R J, Smoot N C, 1989. Physical volcanology of the submarine Mariana and Volcano arcs. Bull Volc, 51: 210-224.

Japan Meteorological Agency, 1996. National Catalogue of the Active Volcanoes in Japan (second edition). Tokyo: Japan Meteorological Agency, 502 p (in Japanese).

Smithsonian Institution-CSLP, 1968-75. [Event notification cards]. Center for Short-Lived Phenomena (CSLP) Event Cards.

Yuasa M, Murakami F, Saito E, Watanabe K, 1991. Submarine topography of seamounts on the volcanic front of the Izu-Ogasawara (Bonin) Arc. Bull Geol Surv Japan, 42: 703-743.

Volcano Types

Submarine

Tectonic Setting

Subduction zone
Crustal thickness unknown

Rock Types

Major
Andesite / Basaltic Andesite

Population

Within 5 km
Within 10 km
Within 30 km
Within 100 km
0
0
0
0

Affiliated Databases

Large Eruptions of Fukujin Information about large Quaternary eruptions (VEI >= 4) is cataloged in the Large Magnitude Explosive Volcanic Eruptions (LaMEVE) database of the Volcano Global Risk Identification and Analysis Project (VOGRIPA).
WOVOdat WOVOdat is a database of volcanic unrest; instrumentally and visually recorded changes in seismicity, ground deformation, gas emission, and other parameters from their normal baselines. It is sponsored by the World Organization of Volcano Observatories (WOVO) and presently hosted at the Earth Observatory of Singapore.
EarthChem EarthChem develops and maintains databases, software, and services that support the preservation, discovery, access and analysis of geochemical data, and facilitate their integration with the broad array of other available earth science parameters. EarthChem is operated by a joint team of disciplinary scientists, data scientists, data managers and information technology developers who are part of the NSF-funded data facility Integrated Earth Data Applications (IEDA). IEDA is a collaborative effort of EarthChem and the Marine Geoscience Data System (MGDS).
Smithsonian Collections Search the Smithsonian's NMNH Department of Mineral Sciences collections database. Go to the "Search Rocks and Ores" tab and use the Volcano Name drop-down to find samples.