On the basis of the field investigation, grain size analyses for 147 samples from Mafang sections in valley flat in Gaoling and the historical record age material, flood and precipitation change between 1400 and 1100 years were studied.

根據(jù)高陵渭河馬坊灘河漫灘沉積剖面中的沉積層測(cè)量和147個(gè)樣品的粒度分析和歷史記載的年代資料国产a一级毛片爽爽影院无码小说，研究了西安高陵渭河距今1400~1100年間洪水和降雨量變化99在线看精品。

When the waters receded, they revealed geological features that are positively Wagnerian in scale: bars of gravel and sediment heaped up more than 250 metres high

當(dāng)洪水消退后可以进去的黄片，他們留下的地質(zhì)特征在規(guī)模上完全是瓦格納式的宏篇巨制：砂礫和沉積物堆積的沙洲超過250米高

Based on an analysis of the natural, social and economic situations of flood plain in lower reach of Yellow River as well as the status of harnessing, this paper elaborates the problems facing the area, such as flood menace, serious status of suspended river, severe disasters of drought and waterlog, single production structure, implementation of flood plain policies and sluggish safety construction of flood plain.

在敍述黃河下游灘區(qū)白然情況黄av一级毛片、社會(huì)經(jīng)濟(jì)情況、灘區(qū)治理現(xiàn)狀的基礎(chǔ)上亚洲人成亚洲精品，詳細(xì)論述了黃河下游灘區(qū)存在的問題高清免费A片一级毛片软件。由於黃河水沙問題復(fù)雜，治理難度大偷拍亚洲，灘區(qū)治理開發(fā)也受到限制在线www.av，目前存在的主要問題是：l洪水威脅依然存在；2懸河形勢(shì)嚴(yán)峻欧美一级婬片欧美人妻、河勢(shì)尚未有效控制久久久久久久久久久久久久久精品；3灘區(qū)旱澇災(zāi)害嚴(yán)重；4灘區(qū)產(chǎn)業(yè)結(jié)構(gòu)單一怡红院精品视频在线观看极品；5灘區(qū)政策落實(shí)不到位黄黄的视频网站；6灘區(qū)安全建設(shè)狀況嚴(yán)重滯后。

La Ni?a is a cyclical global weather pattern that has been linked to weather disruptions ranging from hurricanes in the Atlantic to flooding in Africa and South Asia last year.

拉尼娜現(xiàn)象是一種周期性的全球天氣現(xiàn)象一区二区看美女视频。，被認(rèn)為與多種反常天氣有關(guān)色哟哟亚洲一区在线播放，從大西洋的颶風(fēng)，到非洲和南亞去年的洪水泛濫久久久这里有精品视频。

La Nina is a cyclical global weather pattern that has been linked to weather disruptions ranging from hurricanes in the Atlantic to flooding in Africa and South Asia last year.

拉尼娜現(xiàn)象是一種周期性的全球天氣現(xiàn)象美女图片一级卡片，被認(rèn)為與多種反常天氣有關(guān)，從大西洋的颶風(fēng)日本三级网页，到非洲和南亞去年的洪水泛濫亚洲全部黄色网站。

First, the winter half of the year is dominated by a westerly or "sub-Mediterranean" circulation.

不丹境內(nèi)也有許多危險(xiǎn)的冰川湖，其中1994年發(fā)生的一場(chǎng)洪水曾經(jīng)造成很大的災(zāi)害黑人永久免费刺激视频。

This past few months have been the wettest in the islands ever, even causing flooding and dams to break!

這過去的幾個(gè)月曾是島嶼最多雨的時(shí)節(jié)黄色黄色黄色黄片黄片视频黄片视频黄片，甚至導(dǎo)致了洪水和大壩的倒塌！

This study focuses on flood hydrographes and water yield from the point of view of runoff generation.

對(duì)西南地區(qū)的山區(qū)日韩二区网站、冰川—森林混合帶和喀斯特等3種地貌類型的河流91人人，從徑流形成機(jī)理的角度對(duì)洪水過程與水量及其變化等特性作分析。

Beni, a district of Bolivia prone to alternate flooding and drought, is an example of a region where people are being forced to adapt to the changing climate.

玻利維亞的貝尼地區(qū)容易遭受洪水和干旱的輪流侵襲黄色视频网址大全。它也是一個(gè)人們被迫應(yīng)對(duì)氣候改變的例子aaa片网址。

After Schmidt a flood of new catadioptric designs appeared in the subsequent decades.

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