2009 Fiscal Year Final Research Report
Latitudinal section mapping of pore water constituents in the central and eastern equatorial Pacific
| Project/Area Number |
19510014
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Environmental dynamic analysis
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| Research Institution | Tokai University |
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Principal Investigator |
KATO Yoshihisa Tokai University, 海洋学部, 教授 (00152752)
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| Co-Investigator(Kenkyū-buntansha) |
NARITA Hisashi 東海大学, 海洋学部, 教授 (50250501)
MINAMI Hideki 東海大学, 生物理工学部, 准教授 (60254710)
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| Project Period (FY) |
2007 – 2009
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| Keywords | 中央太平洋 / 東太平洋赤道域 / 南北縦断測線 / 生物生産 / 堆積物間隙水 / ケイ酸塩 / 溶存バリウム / 海底フラックス |
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| Research Abstract |
Chemical constituents in pore waters of sediment cores collected along latitudinal sections in the central and east equatorial Pacific were measured. On the basis of the distributions of silicate and dissolved barium in pore waters, originated from biogenic opal and barite particles, respectively, their diffusive fluxes upward from the bottom sediment were analyzed. Both of the upward fluxes were estimated to be high in the Antarctic and Equatorial and low in the subtropical regions. This can indicate that the latitudinal changes in the upward fluxes of silicate and dissolved barium result from the geographical change of biological production in the ocean.
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