Hydrothermal plumes along the North Fiji Basin spreading axis

Yukihiro Nojiri, Junichiro Ishibashi, Takayoshi Kawai, Akira Otsuki, Hitoshi Sakai

Research output: Contribution to journalArticle

38 Citations (Scopus)

Abstract

STEADY-STATE emanations of hydrothermal vent fluid along the mid-ocean ridges give rise to plumes rising 100-300 m above the sea floor, identified by anomalies of temperature, conductivity, chemistry and particles. Recently, a quite different type of hydrothermal plume created by a brief but massive release of high-temperature hydrothermal fluids was discovered by Baker et al. at a Juan de Fuca vent field1-3. This gigantic thermal plume was termed a 'megaplume'. In December 1987, we found a large hydrothermal plume showing anomalies of temperature, methane and manganese above the North Fiji Basin spreading axis. The transience of this plume at 173°30′ E, 18°50′ S was confirmed by our return visit to the site in November 1988. The discovery of megaplumes at two sites in very different tectonic environments indicates that this type of hydrothermal activity may make an important contribution to thermal and chemical fluxes from the mid-ocean ridges.

Original languageEnglish
Pages (from-to)667-670
Number of pages4
JournalNature
Volume342
Issue number6250
DOIs
Publication statusPublished - Jan 1 1989
Externally publishedYes

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hydrothermal plume
plume
mid-ocean ridge
basin
anomaly
hydrothermal vent
hydrothermal activity
hydrothermal fluid
manganese
conductivity
seafloor
methane
temperature
tectonics
fluid

All Science Journal Classification (ASJC) codes

  • General

Cite this

Nojiri, Y., Ishibashi, J., Kawai, T., Otsuki, A., & Sakai, H. (1989). Hydrothermal plumes along the North Fiji Basin spreading axis. Nature, 342(6250), 667-670. https://doi.org/10.1038/342667a0

Hydrothermal plumes along the North Fiji Basin spreading axis. / Nojiri, Yukihiro; Ishibashi, Junichiro; Kawai, Takayoshi; Otsuki, Akira; Sakai, Hitoshi.

In: Nature, Vol. 342, No. 6250, 01.01.1989, p. 667-670.

Research output: Contribution to journalArticle

Nojiri, Y, Ishibashi, J, Kawai, T, Otsuki, A & Sakai, H 1989, 'Hydrothermal plumes along the North Fiji Basin spreading axis', Nature, vol. 342, no. 6250, pp. 667-670. https://doi.org/10.1038/342667a0
Nojiri, Yukihiro ; Ishibashi, Junichiro ; Kawai, Takayoshi ; Otsuki, Akira ; Sakai, Hitoshi. / Hydrothermal plumes along the North Fiji Basin spreading axis. In: Nature. 1989 ; Vol. 342, No. 6250. pp. 667-670.
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