南大洋の表層堆積物における多環芳香族炭化水素の緯度分布  [in Japanese] Latitudinal distributions of polycyclic aromatic hydrocarbons in the Southern Ocean surface sediments  [in Japanese]

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Author(s)

    • 池原 実 IKEHARA Minoru
    • 北海道大学低温科学研究所|(現) 高知大学海洋コア研究センター Institute of Low Temperature Science, Hokkaido University|(Present address) Marine Core Research Center, Kochi University
    • 竹本 紀之 TAKEMOTO Noriyuki
    • 北海道大学低温科学研究所|(現) 東レリサーチセンター Institute of Low Temperature Science, Hokkaido University|(Present address) Toray Research Center
    • 大河内 直彦 [他] OHKOUCHI Naohiko
    • 北海道大学低温科学研究所|(現) Woods Hole Oceanographic Institution Institute of Low Temperature Science, Hokkaido University|(Present address) Woods Hole Oceanographic Institution

Abstract

Polycyclic aromatic hydrocarbons (PAHs) were determined in nine deep-sea surface sediments collected from the Australian sector of the Southern Ocean (47°S-66°S). Total concentrations of three- to seven-ring PAHs except for perylene show that they are low in the middle latitudes (〜48°S) but significantly higher toward higher latitudes (65°S). Their concentrations at 65°S are 〜10 times higher than those of the middle latitudes. On the other hand, concentrations of PAHs in the Southern Ocean sediments are remarkably lower than those of the northern North Pacific, indicating an asymmetrical distribution of PAHs between both hemispheres. This may be associated with the concentrated emission sources of PAHs in the middle latitudes in the Northern Hemisphere. Concentrations of retene, which is originated from biomass burning in the middle latitudes, are extremely increased from 60°S to 65°S. These results indicate that PAHs were transported in the atmosphere from source regions to the high-latitude in the Southern Ocean.

Journal

  • Chikyukagaku

    Chikyukagaku 35(2), 73-84, 2001

    The Geochemical Society of Japan

References:  51

Codes

  • NII Article ID (NAID)
    110008680018
  • NII NACSIS-CAT ID (NCID)
    AN00141280
  • Text Lang
    JPN
  • Article Type
    ART
  • ISSN
    0386-4073
  • NDL Article ID
    5812281
  • NDL Source Classification
    ZM41(科学技術--地球科学)
  • NDL Call No.
    Z15-645
  • Data Source
    CJP  NDL  NII-ELS  J-STAGE 
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