Methods for the Quantitative Assessment of Channel Processes in Steep Torrents

Methods for the Quantitative Assessment of Channel Processes in Torrents (Steep Streams) (IAHR Monographs)

by Irena Scott

4.2 out of 5

Language	:	English
File size	:	19613 KB
Screen Reader	:	Supported
Print length	:	152 pages
Hardcover	:	194 pages
Reading age	:	18 years and up
Item Weight	:	1.04 pounds
Dimensions	:	6.14 x 0.5 x 9.21 inches

FREE

Steep torrents are a unique and challenging environment for fluvial geomorphologists. The high slopes and fast-flowing water create a dynamic and unstable system that is difficult to study. However, understanding the processes that shape steep torrents is essential for managing these systems and mitigating their impacts on downstream communities.

This book provides a comprehensive overview of the methods used to quantitatively assess channel processes in steep torrents. It covers a wide range of topics, including the measurement of bedload transport, suspended sediment transport, and channel morphology. The book is written by a team of experts in the field of fluvial geomorphology, and it is essential reading for anyone interested in understanding the processes that shape steep torrents.

Chapter 1: Bedload Transport

Bedload transport is the movement of sediment along the bed of a river or stream. It is a major process in steep torrents, where the high slopes and fast-flowing water create a lot of energy that can move large amounts of sediment.

There are a number of different methods that can be used to measure bedload transport. These methods can be divided into two main categories: direct methods and indirect methods.

Direct methods measure the movement of sediment directly. This can be done using a variety of techniques, such as:

* Traps: Traps are placed in the stream to collect sediment as it moves downstream. * Samplers: Samplers are used to collect sediment from the bed of the stream. * Cameras: Cameras can be used to record the movement of sediment over time.

Indirect methods measure the movement of sediment indirectly. This can be done using a variety of techniques, such as:

* Tracer studies: Tracer studies involve releasing a tracer into the stream and then tracking its movement downstream. * Acoustic Doppler velocimetry (ADV): ADV is a technique that uses sound waves to measure the velocity of water and sediment. * Numerical modeling: Numerical modeling can be used to simulate the movement of sediment in a stream.

The choice of which method to use to measure bedload transport will depend on the specific conditions of the stream and the desired accuracy of the results.

Chapter 2: Suspended Sediment Transport

Suspended sediment transport is the movement of sediment in the water column of a river or stream. It is a major process in steep torrents, where the high slopes and fast-flowing water create a lot of turbulence that can keep sediment suspended.

There are a number of different methods that can be used to measure suspended sediment transport. These methods can be divided into two main categories: direct methods and indirect methods.

Direct methods measure the concentration of sediment in the water column. This can be done using a variety of techniques, such as:

* Turbidimeters: Turbidimeters measure the amount of light that is scattered by sediment particles in the water column. * Samplers: Samplers are used to collect water samples from the stream and then measure the concentration of sediment in the samples.

Indirect methods measure the movement of sediment indirectly. This can be done using a variety of techniques, such as:

* Tracer studies: Tracer studies involve releasing a tracer into the stream and then tracking its movement downstream. * Acoustic Doppler velocimetry (ADV): ADV is a technique that uses sound waves to measure the velocity of water and sediment. * Numerical modeling: Numerical modeling can be used to simulate the movement of sediment in a stream.

The choice of which method to use to measure suspended sediment transport will depend on the specific conditions of the stream and the desired accuracy of the results.

Chapter 3: Channel Morphology

Channel morphology is the shape and size of a river or stream channel. It is a major process in steep torrents, where the high slopes and fast-flowing water can create a variety of different channel shapes.

There are a number of different methods that can be used to measure channel morphology. These methods can be divided into two main categories: direct methods and indirect methods.

Direct methods measure the shape and size of the channel directly. This can be done using a variety of techniques, such as:

* Surveying: Surveying involves using a variety of instruments to measure the elevation and shape of the channel. * Photogrammetry: Photogrammetry involves using photographs to create a three-dimensional model of the channel. * LiDAR: LiDAR is a technique that uses lasers to create a three-dimensional model of the channel.

Indirect methods measure the shape and size of the channel indirectly. This can be done using a variety of techniques, such as:

* Tracer studies: Tracer studies involve releasing a tracer into the stream and then tracking its movement downstream. * Hydraulic modeling: Hydraulic modeling can be used to simulate the flow of water in a stream and predict the resulting channel morphology.

The choice of which method to use to measure channel morphology will depend on the specific conditions of the stream and the desired accuracy of the results.

This book provides a comprehensive overview of the methods used to quantitatively assess channel processes in steep torrents. It covers a wide range of topics, including the measurement of bedload transport, suspended sediment transport, and channel morphology. The book is written by a team of experts in the field of fluvial geomorphology, and it is essential reading for anyone interested in understanding the processes that shape steep torrents.

Methods for the Quantitative Assessment of Channel Processes in Torrents (Steep Streams) (IAHR Monographs)

by Irena Scott

4.2 out of 5

Language	:	English
File size	:	19613 KB
Screen Reader	:	Supported
Print length	:	152 pages
Hardcover	:	194 pages
Reading age	:	18 years and up
Item Weight	:	1.04 pounds
Dimensions	:	6.14 x 0.5 x 9.21 inches

FREE