Because when a river overflows in a vast flood plain, a minute rise in the water level represents extremely large volume of water.

改進洪水預報久久久国产一级AV片、預報洪水路徑和控制洪水的基本要求之一在于水位的精確測量A级美女网站。

Weng Wenbo firstly pointed out that the occurrence of a floodwater has the commensurability ,and applied the principle of commensurability to the prediction of large natural hazards.

分析了上兩個世紀發(fā)生在淮河的洪水事件的可公度性91在线精彩，根據(jù)其可公度值及其黃金分割點指出1991年與2003年淮河洪水的不可避免日韩毛片无码一区二区三区，最后討論了可公度性的局限及淮河洪水可公度值的可能機制A片强奸少妇毛片按摩。

As a result, it is very convenient to describe flood hydrograph at any site or any instant in terms of one dimensionless curve with the similarity.

提出了洪水過程的自相似性理論99伦乱视频，運用群論方法論證了潰壩洪水的自相似解結(jié)構(gòu)，據(jù)此可由一條曲線來表達任意時刻国外一区二区三区黄色录像、任意位置的洪水過程手机一级在线视频。

Focusing on such several key issues of flood utilization as resources in a basin as potentiality of flood resources in a basin, seasonal variation principle of storm flood in a basin, stage quantitative description method during flood period, computational method of stage design flood and risk design of adjustment and application of limited level of reservoir during flood season, deepgoing study is conducted in this dissertation.

論文圍繞流域洪水資源利用的若干核心問題：流域洪水資源化潛力性欧美精品久久久久、流域暴雨洪水的季節(jié)性變化規(guī)律、水庫汛期分期定量描述方法视频欧美日韩、水庫分期設(shè)計洪水計算方法以及水庫汛限水位調(diào)整運用的風險設(shè)計等進行了深入研究特黄真人免费AAA级毛片，構(gòu)建了利用水庫汛限水位調(diào)蓄洪水資源的理論體系和技術(shù)框架。

From the analysis of the historical and measured data, some tendencies of flood in Zhejiang in the global change are predicted: 1low water year will take the upper hand in ten years or more, the global change will make the temporal and spatial changes of flood in Zhejiang more violent, and the flood disasters in coast area more serious.

中文摘要：根據(jù)歷史和實測資料分析中文字幕av人妻一本二本，對于全球變化下浙江近期洪水的運作大勢女生一区二区三区视频网站，可得如下幾點認識：（1）在未來的十幾年之內(nèi)，浙江省將處在枯水年占優(yōu)勢的階段91人妻论坛社区，但全球變化將使浙江洪水的時空變化更為劇烈亚洲欧美另类专区，使沿海地區(qū)的洪水災害更為嚴重。

To use the flood resources adequately and fully,the method which considers the time series variance law of flood statistical characteristics within the year to calculate staged limited water level in flood season and design flood is proposed.Case study demonstrates that the method is feasible and appliable.

為更好地提高洪水資源利用率精品久久国产精品99国产，基于暴雨洪水的物理成因和統(tǒng)計規(guī)律分析绿巨人直播在线观看免费，提出采用年內(nèi)洪水統(tǒng)計特性變化規(guī)律來確定設(shè)計洪水和各分期汛限水位的新方法，結(jié)合實例說明該方法在汛限水位動態(tài)控制中的實用性和可行性黄片中文字幕视频。

According to the flood data of Urumqi River from Yingxiongqiao hydrometric station over the past 49 years,the spatiotemporal change characteristics of the Urumqi River flood are briefly analyzed with various methods.

主要依據(jù)英雄橋水文站實測洪水資料對烏魯木齊河洪水時空變化特性進行簡略分析丝袜专区，通過多種方法分析了烏魯木齊河49a來洪水的變化趨勢。

There are two kinds of flood: rain gush flood and ice flood.

黃河流域面臨兩類洪水的威脅亚洲午夜一区二区三区福利，即暴雨洪水和冰凌洪水玖玖视频免费。

On the basis of genetic analysis and flood time,the flood in Heilongjiang was divided into three types,that is ,storm flood, snowmelt and rain flood and ice flood in this paper.

按成因和發(fā)生時間，將黑龍江省的洪水劃分為三種類型：暴雨洪水97成视频在线网、融雪和雨雪融合洪水日韩在线无卡视频精品免费播放网站、冰凌洪水；著重論述了暴雨影音先锋日韩在线资源、洪水的時空分布特征以及暴雨洪水的稀遇程度等中文在线天堂网www官网。

But floods occur in many other ways, heavy rains and thawing snowfall can overwhelm rivers, storm surges caused by hurricanes and tsunamis inundate the coastline, landslides and mudflows can displace large volumes of water.

但是，洪水的暴發(fā)也有其它的情況中文字幕日本黄色视频，暴雨和積雪熔化可導致河水泛濫加勒比在线精品观看，暴風雨和海嘯引發(fā)的洪水會淹沒海岸，并引發(fā)泥石流和滑波欧美激情a片免费专区，從而分流了大量洪水6080无码吃奶在线观看视频。