SEDIMENTO-DYNAMIC CHARACTERISTICS OF THE HUANGHE (YELLOW) RIVER SUBAQUEOUS DELTA
SEDIMENTO-DYNAMIC CHARACTERISTICS OF THE HUANGHE (YELLOW) RIVER SUBAQUEOUS DELTA
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DOI：
10.1360/yb1992-35-5-631
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发表时间：
1992-05
影响因子：
9.6
通讯作者：
W. Qi;C. Lihua;Yang Zuo-sheng;Shen Wei-Quan;G.K.Kelier;D.B.Prior
中科院分区：
文献类型：
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作者：
W. Qi;C. Lihua;Yang Zuo-sheng;Shen Wei-Quan;G.K.Kelier;D.B.Prior
黄河径流含有大量悬浮荷载，在河口形成高密度底流（异重流）。水下三角洲上空沉积物主要受底流搬运。沉积物结构向海方向逐渐细化，这与异重流和低重羽流的衰减有关。碎屑云母在水力上相当于沉积物中的主要成分中粉砂大小的石英，因此集中在三角洲。水下三角洲最大厚度约16m，堆积期为12～16年，沉积速率为110～130cm/a。
The runoff of the Huanghe contains a great amount of suspended load and forms the high-density underflows (hyperpycnal currents) at the river mouth. The sediments over the subaqneous delta are mainly transported by the underflow. The sediment texture gradually get fining seawards, which relates to the attenuation of the hyperpycnal currents and hypopycnal plumes. Being hydraulically equivalent to the medlum-silt-sized quartz, which is the dominant component in the sediments, the clastic mica concentrates on the delta. The maximum thickness of the subaqueous delta is about 16m and the period of accumulation lasted from 12 to 16 years, therefore its sedimentary rate ranges from 110 to 130 cm/a.