ANOMALOUS MASS-TRANSFER OF PHOSPHATE ON CORAL-REEF FLATS
ANOMALOUS MASS-TRANSFER OF PHOSPHATE ON CORAL-REEF FLATS
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DOI：
10.4319/lo.1992.37.2.0261
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发表时间：
1992-03-01
影响因子：
4.5
通讯作者：
ATKINSON, MJ
中科院分区：
文献类型：
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作者：
BILGER, RW;ATKINSON, MJ
为了估计最大速率的磷酸盐（P）吸收到珊瑚礁单位社区，我们引入类比之间的流体流动管道和水流在珊瑚礁单位。根据管道中质量传递的工程研究结果，对样品礁坪吸收磷的斯坦顿数（St（m），一个量纲数，表示吸收速率与物质通过吸收表面的平流速率之比）的最佳估计为5 × 10（-5）。实地观察得出的值至少为1.7 x 10（-3），高出40倍。这种非常大的增强部分是由于波浪浪涌，但也可能是由于生物表面和工程表面的性质之间的差异。工程数据已经获得了简单的几何形状与低比率的润湿面积投影表面积。这可能是因为珊瑚礁-平坦群落的湿润面积与预测面积的比率很大，而且这一表面具有分形性质。
To estimate a maximal rate of phosphate (P) uptake into coral reef-flat communities, we introduce analogies between fluid flow in pipes and water flow over coral reef flats. On the basis of results from engineering studies of mass transfer in pipes, the best estimate of the Stanton number (St(m), a dimensionlcss number giving the ratio of uptake rate to the rate of advection of the substance past the uptake surface) for P uptake into a sample reef flat is 5 x 10(-5). Field observations yield a value of at least 1.7 x 10(-3), a factor of 40 higher. This very large enhancement is due in part to wave surge but also could be due to the difference between the nature of the biotic surfaces and that of the engineering surfaces. The engineering data have been obtained for simple geometries with low ratios of wetted area to projected surface area. It is likely that much of the enhancement arises from the large ratio of wetted to projected area for the coral reef-flat community and the fractal nature of this surface.