大通站

以大通站为例，用回归分析的方法研究了长江入海悬移质泥沙的粒度特征。

Based on the data from Datong gauging station of Yangtze River , the grain-size characteristics of suspended sediment has been studied by using regression analysis .

最后还分析了大通站的水沙变化趋势，得出两者变化趋势的规律。

Analyzing the discharge and sediment variation at Datong gauging station of Yangtze River has drawn out the principle of the variation trend for discharge and sediment .

采用Kendall秩相关检验对大通站年平均流量1953～2002年时间序列进行趋势检验，检验结果表明，大通站年平均流量存在一定的增加趋势，但趋势不显著。

To study on the time-series of Datong station from 1953 to 2002 with Kendall method , the results showed that the annual runoff has indistinctive increasing trend .

主要研究成果如下：（1）自从三峡工程一期蓄水后早期（2003年）到2006年，长江河口（大通站）径流量由2003年的9248亿m3减少到2003年6886亿m3。

The main results in the thesis were drawn as follows : ( 1 ) From Phase-I water storage ( 2003 ) to 2006 , the water discharge of Changjiang ( Yangtze ) reduced from 924.8 billion m3 to 688.6 billion m3 .

长江大通站输沙量时间序列分析研究

Study on time series of sediment discharge at Datong station in the Yangtze River

长江大通站溶解硅25年变化特征统计分析

Change characteristic of dissolved silicate in the Changjiang River nearly 25 years by statistical analysis

运用时间序列分析方法研究大通站的径流过程基本特征，分析表明，1923年以来大通站的径流序列无明显的趋势变化。

This paper studies main characters of runoff process at Datong Station with methods of time-series analysis .

基于小波变换的水沙关系特征分析：以长江大通站为例

Rating curves based on wavelet analyses : a case study at Datong station in the lower Changjiang River

大通站径流量在保持稳定的情势下，输沙量在过去49年中有明显的下降。

The runoff discharge has been stable in Datong while sediment discharge has been declining obviously over the past 49 years .

大通站径流于1955年、1988年发生两次突变，前者以径流减少为特征，后者以增加为特征；

Two abrupt changes occurred in Datong series respectively in 1955 and 1988 , the former negative and the latter positive ;

大通站1950到2004年的最小、最大月均径流量均呈上升趋势；

Both the minimum and maximum monthly average water discharge at Datong station shows an increasing trend from 1950 to 2004 ;

悬沙通量由中游向下游略有减少，大通站多年平均输沙量为4.36亿吨（1953-1999）；

Suspended sediment discharge decreases a little from middle reach to lower reach . The yearly averaged sediment discharge is 436 million tons in Datong ( 1953-1999 ) .

利用长江河口潮区界大通站的水质资料探讨了溶解态无机氮、磷浓度和通量的变化。

Based on the data of water quality at Datong Station , which is at tidal limit in the Changjiang Estuary , variations of concentrations and fluxes of the dissolved inorganic nitrogen and phosphorus were discussed .

根据大通站1950－1985年的水、沙实测资料，运用统计分析方法研究长江人河口区水、沙通量的季节性变化、年际变化以及水、沙通量之间的关系。

According to the field measurements of runoff and sediment at the Datong hydrological station in the period from 1950 to 1985 , a statistical approach is applied to study the seasonal and yearly variations in water and sediment fluxes to the estUary and their relationship .

长江螺山汉口大通三站水位流量关系历年变化分析

Variation of the stage & discharge curves over years at three Yangtze hydrologic stations

长江大通水文站径流量的时间系列分析

Time is * Analyses with Wavelet and Hilbert-Huang Transform on Monthly Water Discharges at Datong Station , Yangtze River

并利用所建立的两个模型对长江大通水文站的月径流时间序列数据进行了模拟和预报。

The two established models are utilized to fitting and predict for the data of Yangtze River da-tong hydrologic station monthly discharge .

利用1998~1999年TOPEX/Poseidon在长江下游大通附近的过境数据和对应年份大通水文站实测流量数据，验证了本方法的可行性。

Based on the two years ( 1998 , 1999 ) TOPEX / Poseidon data and ground observed river discharge data around Datong station which is located in the lower reaches of the Yangtze River , the approach was validated .