1.Relationship between biogeochemical features of biogenic elements and flocculation in the Changjiang Estuary
Relationship between biogeochemical features of biogenic elements and flocculation in the Changjiang Estuary
2.The variation patterns and correlations of total phosphorus, organic phosphorus and phosphate in the Changjiang Estuary
The variation patterns and correlations of total phosphorus，organic phosphorus and phosphate in the Changjiang Estuary
3.Abstract: The Qiantang Estuary with violent hydrodynamic conditions is well known for its tidal bore.The regulation of the estuary in the past,especially the progress since the founding of new China are reviewed.The principles of the regulation and planning of the Qiantang Estuary formulated in 1960s are expounded,i.e.,to narrow the river to reduce the tidal prism,and to increase the ratio of the river flow to tidal discharge.The experience of estuary regulation/reclamation is summarized,especially the engineering measures to protect the groin head and to use polder dykes as sea defense works.Finally,the effect is analyzed of the large-scale constraction/reclamation in the estuary on the tides,flooding high water level,estuary bed and the northern deep waterway in the Hangzhou Bay.
文摘:以涌潮闻名的钱塘江河口，动力强劲，破坏力极大.回顾钱塘江河口历代治理情况，重点记述1949年以来治理工作的进展，论述60年代提出的钱塘江河口治理规划的指导思想，即缩窄江道，减少进潮量，增大山潮水比值的整治原则.总结整治规划实施过程中治江围涂经验，特别是“以围代坝”和丁坝坝头保护等工程措施.分析钱塘江河口大规模治江围涂后对钱塘江河口潮汐、洪水位、河床以及杭州湾北岸深槽的影响.
4.The sediments of the incised valleys show an upward-fining succession, and can be grouped into four sedimentary fades: gravel lag-deposit of in-channel to partly over bank sediments of a meandering river, flood plain-estuary, estuary-shallow marine, and estuary sand bar, based on lithology, paleontology, and sedimentary textures and structures.
根据岩石学、沉积结构和沉积构造特征，本区下切河谷充填沉积物具有向上变细的沉积层序，可以划分为4个沉积相类型：河床滞留沉积物到部分曲流河沉积体系的边滩沉积、河漫滩－河口湾沉积、河口湾－浅海沉积和河口湾砂坝沉积。
5.This paper describes the application of semi-circular breakwater at home and abroad and the design innovation and optimization of semi-circular jetty in Yangtze Estuary Deepwater Channel Regulation Project, esp. the design of estuary jetty structure using semi-circular floating caissons; A new calculation method for wave forces acting on the submerged semi-circular estuary jetty and the optimization design method for semi-circular structures are recommended.
摘要介绍半圆型防波堤和河口导堤在国内外的应用概况及在长江口深水航道治理工程中对半圆型导堤的设计创新和优化－半圆型浮式沉箱的导堤结构型式，提出堤顶淹没情况下半圆型导堤波浪力的计算方法以及半圆型结构的优化设计方法等。
6.By creating a large scale computing grid (south to Kanmen, north to Lianyun Harbor, west to 125.15°E )of Changjiang estuary and Hangzhou Bay and their neighboring sea areas and using up to date data of tidal stations, 8 major tidal constituents, M2, S2, N2, K2, K1, O1, P1 and Q1, are simulated more accurately. And thus more accurate tidal level boundary condition can be given at the open boundaries of models of Changjiang estuary.
通过建立一个长江口杭州湾附近海域计算范围南达坎门,北至连云港,西到东经125.15°E的大区域计算网格,利用最新的验潮站资料,更加精细的模拟8个主要分潮M_2、S_2、N_2、K_2、K_1、O_1、P_1和Q_1,为长江河口模型提供开边界上的更加准确的潮位边界条件;
7.Estuary dynamics,regulation of navigation channels in estuary,and silt problems of harbours and navigation channels.
长期从事河口动力学、河航道治理及港口航道泥沙的咨询研究，曾为长江口、黄浦江、瓯江等河口整治工程提供咨询。
8.Based on the observed data analysis and mathematical modeling,the effect of runoff,tide current and river regime change on the salt-water intrusion into the South Branch of the Yangtze Estuary has been studied. Meanwhile,the effect of the three salt-water intrusion sources of the North Branch of the estuary,South and North Channel at the downstream of the South Branch has been emphatically studied.
依据实测资料分析和数学模型计算分析了上游径流、外海潮流以及河势变化对长江口南支河段盐水入侵的影响，同时着重研究了长江口北支以及南支下游的南、北港三个盐水入侵源对南支河段盐水入侵的影响。
9.And then, the north branch of Changjiang estuary will silt. 5. The formation and evolement of Xinglong sand have something extraordinary with the change of the spot of spring tide of north and south branch of Changjiang estuary, and that the conversion of tidal current from ebb tide to flood tide domination is pivotal factor.
5.兴隆沙的形成与演变同长江口南北支涨潮会潮点位置的变化,以及长江口北支由以落潮流为主向涨潮流为主,即由落潮槽向涨潮槽转变密切相关。
10.The results consider the condition of water and sand which come into Yangtze estuary and the character of south branch channel、sand body movement and current,the paper discuss evolution trend of Yangtze estuary and give related repair measurement.
由分析结果结合近年长江河口来水来沙现状和南支河道特征、沙体迁移特征和水流特点,探讨长江口南支演变趋势及所需采取的相关治理措施。
