Hyperpycnal plumes and plume fronts over the Huanghe (Yellow River) delta front
Hyperpycnal plumes and plume fronts over the Huanghe (Yellow River) delta front
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DOI：
10.1007/bf02281645
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发表时间：
1986-06
影响因子：
2.1
通讯作者：
L. Wright;Z. Yang;B. Bornhold;G. H. Keller;D. B. Prior;W. Wiseman
中科院分区：
文献类型：
--
作者：
L. Wright;Z. Yang;B. Bornhold;G. H. Keller;D. B. Prior;W. Wiseman
黄河排放的悬浮泥沙浓度极高（25至220克/升），有利于持续的高密度羽流（底流）。弱hyperpycnal unchannelized羽流和间接证据的强烈hyperpycnal渠道的三角洲前缘的底流的观测表明这些模式的沉积物扩散的重要性。弱超密集羽占据了整个水柱以上的浅（<5米）三角洲顶部。从一个明显的前附近的斜坡在约5米深的休息，他们下降到三角洲前缘斜坡广泛蔓延的底流。证据表明，强烈hypercnal底流的水下山谷部分填充低密度泥。
The Huanghe (Yellow River) discharges extremely high suspended sediment concentrations (25 to 220 g/l) which favor sustained hyperpycnal plumes (underflows). Observations of weakly hyperpycnal unchannelized plumes and indirect evidence of strongly hyperpycnal channelized underflows over the delta front indicate the importance of these modes of sediment dispersal. The weakly hyperpycnal plumes occupy the entire water column over the shallow (<5 m) delta top. From a pronounced front near the break in slope at about 5 m depth, they descend over the delta-front slope as wide-spread underflows. Evidence of strongly hyperpycnal underflows was shown from subaqueous valleys partly filled with low-density mud.