《地质与地貌学》课程教学资源（PPT课件）第七章 流水地貌及堆积物 Landforms Formed by Running Water and Accumulation

第七章 流水地貌及雍积物 Chapter 7 Landforms Formed by Running Water and Accumulation

第七章 流水地貌及堆积物 Chapter 7 Landforms Formed by Running Water and Accumulation

本章为全课程很重要的一章 本章教学目的和要求： 1.要求深刻认识三种地表流水类型，即片 流、洪流及河流及其地质作用； 2.重点掌握三种地表流水所形成的地貌和 堆积物的类型、特征，尤其是河流地貌，熟悉 有关术语： 3.掌握流水地貌和堆积物与土壤、农业的 密切关系

本章为全课程很重要的一章 本章教学目的和要求： 1.要求深刻认识三种地表流水类型，即片 流、洪流及河流及其地质作用； 2.重点掌握三种地表流水所形成的地貌和 堆积物的类型、特征，尤其是河流地貌，熟悉 有关术语； 3.掌握流水地貌和堆积物与土壤、农业的 密切关系

7.1 General Concept of Surface Running Water 7.2 Landforms Formed by Sheetwash, Flood Current and Accumulation 7.3 The Geological Work of Streams 7.4 Landforms of the River Valley 7.5 Alluvial Plains 7.6 Landforms in River Mouth Areas 7.7 Development of the Stream Landforms 7.8 Surface Running Water and Agricultural Resources

7.1 General Concept of Surface Running Water 7.2 Landforms Formed by Sheetwash , Flood Current and Accumulation 7.3 The Geological Work of Streams 7.4 Landforms of the River Valley 7.5 Alluvial Plains 7.6 Landforms in River Mouth Areas 7.7 Development of the Stream Landforms 7.8 Surface Running Water and Agricultural Resources

第一节 地表流水的一般概念 7.1 General Concept of Surface Running water

第一节 地表流水的一般概念 7.1 General Concept of Surface Running water

7.1 General Concept of Surface Running water 7.1.1 Formation of Surface Running Water 7.1.2 The Influence Factors of Geological Processes 7.1.3 The Characteristics of Surface Running Water

7.1 General Concept of Surface Running water 7.1.1 Formation of Surface Running Water 7.1.2 The Influence Factors of Geological Processes 7.1.3 The Characteristics of Surface Running Water

Key terms: surface running water(地表流水) sheetwash(laminar flow（片流) flood current洪流（沟谷流） stream(河流)

Key terms： surface running water（地表流水） sheetwash(laminar flow)（片流） flood current洪流(沟谷流) stream（河流）

7.1 General Concept of Surface Running water 7.1.1 Formation of Surface Running Water (1)来源：有相当的水量 (2)汇集条件：1)较差的下渗条件 2)地形起伏

7.1 General Concept of Surface Running water 7.1.1 Formation of Surface Running Water (1)来源：有 相当的水量 (2)汇集条件 ：1）较差的下渗条件 2）地形起伏

7.1 General Concept of Surface Running water 7.1.2 The Influence Factors of Geological Processes 流量(discharge)Q,流速(flow velocity) V 其次还有地形(terrain)、气候 （climate)、 植被(vegetation)、岩石及地质构造(rocks and geologic structure

7.1 General Concept of Surface Running water 7.1.2 The Influence Factors of Geological Processes 流量（discharge）Q，流速（ flow velocity） V 其次还有地形（terrain）、气候（climate）、 植被（vegetation）、岩石及地质构造（rocks and geologic structure ）

B Formation of surface running water

Formation of surface running water

1000r (X 侵蚀 100 10 包 搬运 沉积 1.0 沉降速度 0.1 0.001 0.01 0.1 1.0 10 100 1000 直径mm Relation between flow velocity and erosion, transport and deposition of a stream

Relation between flow velocity and erosion, transport and deposition of a stream