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首页> 外文期刊>Journal of oceanography >Relationship between Sinking Organic Matter and Minerals in the Shallow Zone of the Western Subarctic Pacific
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Relationship between Sinking Organic Matter and Minerals in the Shallow Zone of the Western Subarctic Pacific

机译：西北极太平洋浅带下沉有机质与矿物质的关系

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摘要

We used time-series sediment trap data for four major components, organic matter and ballast minerals (CaCO_3, opal, and lithogenic matter) from 150, 540, and 1000 m in the western subarctic Pacific (WSAP), where opal is the predominant mineral in sinking particles, to develop four simple models for settling particles, including the "ballast model". The ballast model is based on the concept that most of the organic matter "rain" in the deep sea is carried by the minerals. These four models are designed to simultaneously reproduce the flux of each major component of settling particles at 540 and 1000 m by using the data for each component at 150 m as initial values. Among the four models, the ballast model, which considers the sinking velocity increase with depth, was identified as the best using the Akaike information criterion as a measure of the model fit to data. This model successfully reproduced the flux of organic matter at 540 and 1000 m, indicating that the ballast model concept works well in the shallow zone of the WSAP on a seasonal timescale. This also suggests that ballast minerals not only physically protect the organic matter from degradation during the settling process but also enhance the sinking velocity and reduce the degree of decomposition.
机译：我们使用了时间序列的沉积物陷阱数据，分析了北亚太平洋西部（WSAP）150、540和1000 m中四种主要成分，有机物和压载矿物（CaCO_3，蛋白石和成岩物质），其中蛋白石是主要矿物在下沉粒子方面，开发了四个用于沉降粒子的简单模型，包括“压载模型”。压载模型基于以下概念：深海中的大多数有机物质“雨水”是由矿物携带的。通过使用150 m处每个组分的数据作为初始值，设计这四个模型以同时再现540和1000 m处沉降颗粒的每个主要组分的通量。在这四个模型中，考虑了下沉速度随深度增加的镇流器模型，使用Akaike信息准则作为对数据拟合模型的度量，被认为是最佳的。该模型成功地再现了540和1000 m处有机物的通量，表明压载模型的概念在WSAP的浅层区域在季节性时标上运行良好。这也表明压载矿物不仅在沉降过程中物理保护有机物免于降解，而且还提高了沉降速度并降低了分解程度。

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  • 来源
    《Journal of oceanography》 |2010年第5期|p.697-708|共12页
  • 作者

    Masahito Shigemitsu; Yutaka W. Watanabe; Yasuhiro Yamanaka; Hajtme Kawakami; Makio C. Honda;

  • 作者单位

    Faculty of Environmental Earth Science, Hokkaido University, Kita-ku, Sapporo 060-0810, Japan;

    Faculty of Environmental Earth Science, Hokkaido University, Kita-ku, Sapporo 060-0810, Japan;

    rnFaculty of Environmental Earth Science, Hokkaido University, Kita-ku, Sapporo 060-0810, Japan Core Research for Evolutional Science and Technology (CREST), Japan Science and Technology Agency (JST), Sanban-cho, Tokyo 102-0075, Japan;

    Research Institute for Global Change, Japan Agency for Marine-Earth Science and Technology,Natsushima-cho, Yokosuka 237-006J, Japan;

    rnResearch Institute for Global Change, Japan Agency for Marine-Earth Science and Technology,Natsushima-cho, Yokosuka 237-006J, Japan;

  • 收录信息 美国《科学引文索引》(SCI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    sinking particles; ballast model; western subarctic pacific ocean;

    机译：下沉的颗粒;镇流器模型西部北极太平洋;

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