海水中のヒ素の地球化学バランスに対する熱水の影響  [in Japanese] Influence of hydrothermal flux on arsenic geochemical balance of seawater  [in Japanese]

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Author(s)

Abstract

Annual hydrothermal flux of arsenic from back arc basins and mid-ocean ridges was estimated based on arsenic concentration of hydrothermal solutions and seawater circulation rate. Estimated values are (0.2-5.2)x10<sup>11</sup> g/yr at island arc-back arc basins and (0.8-1.6)x10<sup>9</sup> g/yr at mid-ocean ridges. The estimated total hydrothermal input flux ((0.28-5.36)×10<sup>11</sup> g/yr) is similar to or higher than that of river flux (0.78×10<sup>11</sup> g/yr). Total input flux ((1.6-6.1)×10<sup>11</sup> g/yr) is same in orders of magnitude to pyrite output flux ((1.3-2.9)×10<sup>11</sup> g/yr). Subduction flux is estimated to be (4.0-8.2)×10<sup>10</sup> g/yr. The comparison of subduction flux with hydrothermal flux from island arc-back arc basins suggests that the subduction flux from crust to mantle is small, compared with arsenic circulation in crust-ocean-atmosphere system.

Journal

  • Chikyukagaku

    Chikyukagaku 27(2), 135-139, 1993

    The Geochemical Society of Japan

Codes

  • NII Article ID (NAID)
    110008679882
  • NII NACSIS-CAT ID (NCID)
    AN00141280
  • Text Lang
    JPN
  • ISSN
    0386-4073
  • NDL Article ID
    3847963
  • NDL Source Classification
    ME32(水文学--海洋)
  • NDL Source Classification
    ZM41(科学技術--地球科学)
  • NDL Call No.
    Z15-645
  • Data Source
    NDL  NII-ELS  J-STAGE 
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