宜昌站

长江宜昌站沙质推移质输沙规律

Sand Bed-load Transport Rate at Yichang Station of Yangtze River

长江宜昌站枯季径流长期变化的分析

Analysis of Long-Term Variation of Dry Season Runoff at Yichang Station of Yangtze River

以宜昌站120年（1882&2001年）实测日流量资料为基础，利用Morlet小波变换对其汛期日最大流量过程进行多时间尺度变化特性分析。

Based on Morlet wavelet transform , the multiple time scales feature of flood season daily maximum flow series at Yichang gauging station have been analyzed in the base of 120 years ( 1882-2001 ) daily real data of water discharge .

长江干流宜昌站全沙特性分析

An Analysis of Full Sand at Yichang on the Main Stream of the Yangtze River

宜昌站月径流时间序列的混沌特性分析

Chaos analysis of monthly runoff time series at Yichang Hydrologic Station of the Yangtze River

结果表明，宜昌站多年平均输沙量是较稳定的。

The results show that the annual average sediment discharge for the Yichang Station is stable .

嘉陵江流域水沙变化趋势及其对长江宜昌站的影响

Runoff and sedimentation variation tendency in Jialing River and its effects on Yichang reach of Yangtze River

长江宜昌站年悬移质输沙量均值估计

Estimation on the Mean of Annual Suspended Sediment Discharge for the Yichang Station on the Yangtze River

三峡电站日调节对下游宜昌站水位的影响

Analysis of water level at Yichang Station due to daily storage of the Three Gorges power station

该方法在长江宜昌站的年径流资料系列上进行了应用。

This Bayesian model has been applied to the annual discharge series of Yangtze River at Yichang hydrological station .

不同预报模型的应用研究以宜昌站为代表站对三峡水库入库流量进行中长期预报研究。

YiChang station is set as the representative station to do long-term forecast research of the Three Gorges Reservoir inflow .

宜昌站80年代以来输沙量一直呈下降趋势，尤其是90年代以来输沙量急剧减少。

The sediment outflow at Yichang Hydrological Station has presented the downward trend since l980s , specially was reduced severely since1990s .

对宜昌站1991~2002年最大径流量的预测结果表明，该方法是切实可行的。

Through forecast of annual maximum runoff 1991 ~ 2002 in Yichang Station , the results show that the method is practical and feasible ;

利用多因子逐步回归周期分析法建立长江宜昌站年平均流量的中长期水文预报模型。

A medium and long-term hydrological forecast model of the mean annual discharge at Yichang station on the Yangtze River was established using the multi-factor stepwise regression cycle analysis .

采用宜昌站120年（1882年～2001年）的日流量资料，借助蒙特卡罗模拟，计算分析了防洪风险率和发电量，探讨了各种不确定性因素对调度结果的影响。

With the daily flow discharge sequence of the Yichang Gauging Station from 1882 to 2001 , the Monte-Carlo simulation is adopted to calculate the flood risk and power output .

金沙江屏山站年均增加沙量约035亿t，其占宜昌站的百分数由518%增加到719%；

The Pingshan station at the Jinsha River increased about 0.35 × 10 ~ 8t , and the percentage ( compared with Yichang station ) also increased from 51.8 % to 71.9 % ;

近期长江上游水沙变化特点主要表现为：与1990年前相比，1991-2002年宜昌站年均减少沙量约13亿t；

Compared with the annual runoff and sediment transport before 1990 , there were three major changes of annual sediment transport in the term of 1991-2002 : the Yichang station decreased about 1.3 × 10 ~ 8t ;

本文应用水文随机模拟方法，对长江宜昌站年悬移质输沙量均值进行了抽样误差估计，并用其它三种方法分析了均值的变化范围。

In this paper , the sampling error on the mean of annual suspended sediment discharge for the Yichang station on the Yangtze River has been estimated by use of the hydrologic stochastic simulation , and the variation ranges of the mean have been analysed by other three methods .

利用宜昌水文站资料，分析全沙多年来变化规律，为今后提高水文质量、工程建设和水体研究打下基础。

With the help of the information obtained by Yichang Hydrology Station , the changing rule of the full sand in the past years is analyzed , laying a foundation for improving hydrological quality , project construction and water body research .