By introducing the resistance equations of sand wave by others , the total resistance can be computed 在引入沙波阻力的有关计算公式后，即可将以上几种阻力单元叠加计算河流总阻力。
3.
Based on the distributions , patterns and movement characteristics of sea bottom sand waves in china sea shelf area , the effects of sand waves on submarine cable burial operation are analyzed 摘要基于中国海大陆架区海底沙波的分布、形态和移动特征，分析了沙波对海缆施工的埋设张力和埋设深度的影响。
4.
Furthermore , the matters needing attention and the necessary measures during the submarine cable operations in the sand wave area are proposed , which will provide reference for the submarine cable operations in china sea sea bottom sand wave area 提出了在沙波区进行海缆施工时应注意的事项和需要采取的必要措施，为在中国海海底沙波区进行海缆施工提供参考和借鉴。
5.
Using the hulscher model of the formation of sand waves and sandbanks , under the ancient bathymetry , or under the modern bathymetry , the stokes number of the tidal flow and resistance parameter in the radial sandbanks satisfy the conditions for the formation of sandbanks . the research demonstrates that the dynamic flow conditions result in the development of tidal current sandbank . the radial sandbanks and it ' s asymmetrical distributions will still maintain in the future 应用hulscher沙波及沙脊增长模式，通过对该海域斯托克斯数及底部阻力参数的计算首次发现，南黄海辐射沙脊群海域在概化古地形和现代辐射状沙脊群水下地形情况下，其斯托克斯数及底部阻力参数均满足形成潮流沙脊的条件。
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