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Application of sediment traps to assess downward flux and settling velocity in New Croton Reservoir, Westchester County, New York.

机译:在纽约韦斯特切斯特县的新克罗顿水库中应用沉积物捕集阱评估向下的通量和沉降速度。

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摘要

Temporal and spatial patterns are presented for metalimnetic and near-bottom sediment trap collections of particulate phosphorus (PP), chlorophyll (Chl), particulate organic carbon (POC), and suspended solids, during the stratified periods of 1999 and 2000 in the New Croton Reservoir. The contribution of non-phytoplankton particles (tripton) to the PP pool caused a decoupling of the downward fluxes of Chl and PP. These contributions were manifested in the stoichiometry of trap collections and the higher estimates of settling velocity (SV) of PP compared to Chl. Tripton represented 73–89% of the deposited phosphorus. Water column concentrations and sediment deposition generally decreased in the downstream direction in the reservoir. Comparisons of deposition of near-bottom to metalimnetic traps at two sampling stations, and transmissometry data indicate that resuspension occurs. These findings have direct bearing on the successful simulation of water quality models.
机译:提出了1999年和2000年分层时期中新的巴豆的金属动力学和近底部沉积物捕集的颗粒磷(PP),叶绿素(Chl),颗粒有机碳(POC)和悬浮固体的时空分布图水库。非浮游植物颗粒(tripton)对PP池的贡献导致Chl和PP向下通量的解耦。这些贡献体现在捕集阱的化学计量以及与Chl相比更高的PP沉降速度(SV)估计值。 Tripton占沉积磷的73-89%。水柱浓度和沉积物沉积通常在储层的下游方向上降低。比较两个采样站近底部阱到金属电磁阱的沉积,以及透射率数据表明发生了重悬浮。这些发现直接关系到水质模型的成功模拟。

著录项

  • 作者

    Etringer, Adam John.;

  • 作者单位

    State University of New York College of Environmental Science and Forestry.;

  • 授予单位 State University of New York College of Environmental Science and Forestry.;
  • 学科 Engineering Environmental.; Environmental Sciences.
  • 学位 M.S.
  • 年度 2002
  • 页码 p.1598
  • 总页数 107
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 环境污染及其防治;
  • 关键词

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