排序方式: 共有9条查询结果,搜索用时 62 毫秒
1
1.
2.
The Huanghe (Yellow) River, with annual sediment discharge about 11 ×108tons, contributes about 17% of the fluvial sediment discharge of world's 21 major rivers to the ocean because its middle reaches flow across the great Loess Plateau of China. Sediment discharge of the Huanghe River has a widespread and profound effect on sedimentation of the sea. The remarkable shift of its outlet in 1128-1855 A.D. to the South Yellow Sea formed a large subaqueous delta and provided the substrate for an extensive submarine ridge field.The shift of its outlet in the modern delta every 10 years is the main reason why with an extremely heavy sediment input and a micro- tidal environment, the Huanghe River has not succeeded in building a birdfoot delta like the Mississippi. The Huanghe River has consistently brought heavy sediment input to sea at least since 0.7 myr.B.P. Paleochannels, paleosols, cheniers and fossils on the sea bottom indicate that the Yellow Sea was exposed during the late Quaternary glacial low-sea l 相似文献
3.
4.
5.
6.
7.
8.
西南喀斯特山区三水转化与水资源过程及合理利用 总被引:10,自引:0,他引:10
中国西南喀斯特山区由于地质背景和地貌结构的特殊性,致使三水转化与水资源形成过程不同于非喀斯特山区。文章探讨该区三水转化机理、水资源补给方式和形成过程,得出喀斯特流域对于相同或相似降雨过程的响应,不同的流域结构决定了补给方式、三水转化、径流调蓄和输移特征。提出喀斯特山区水资源合理利用模式应按照因地制宜、因土制宜、因水制宜及因需制宜原则,采用以小微型为主的水资源开发利用模式,实施分散拦蓄、分散供水,以化整为零方式解决喀斯特山区的整体性干旱缺水。 相似文献
9.
1