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The Analysis and Synthesis of River ...

Brown, Rocko Anthony.

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The Analysis and Synthesis of River Topography.

Record Type:	Electronic resources : Monograph/item
Title/Author:	The Analysis and Synthesis of River Topography./
Author:	Brown, Rocko Anthony.
Description:	187 p.
Notes:	Source: Dissertation Abstracts International, Volume: 76-07(E), Section: B.
Contained By:	Dissertation Abstracts International76-07B(E).
Subject:	Hydrologic sciences. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3685184
ISBN:	9781321608083

The Analysis and Synthesis of River Topography.
Brown, Rocko Anthony.

The Analysis and Synthesis of River Topography. - 187 p.

Source: Dissertation Abstracts International, Volume: 76-07(E), Section: B.

Thesis (Ph.D.)--University of California, Davis, 2014.

This item must not be sold to any third party vendors.

Freshwater flora and fauna have been declining worldwide due to anthropogenic alterations to Earth's rivers and streams. To address this, rivers and streams are often restored by modifying or removing human induced stressors. River restoration in the form of topographic manipulation is often needed to remove or modify constraints that limit the potential for natural adjustments in channel topography that create and maintain physical habitat. The practice of river restoration has become a billion dollar industry nationally in the US alone, but is highly criticized as being ineffective because often the scientific foundations of restoration actions are unclear. Process based river restoration is an ideology based on restoring the fundamental processes that shape and maintain river systems. While process based restoration has a strong conceptual basis in achieving successful restoration, it still lacks the specificity needed for restoring rivers and streams through topographic manipulation. River restoration professionals need a way to analyze fluvial processes and invert that knowledge to synthesize topographies that yield those processes for river restoration design. Just as scientific analysis and synthesis are dual engines of the scientific method, they are necessary components in river restoration that involves topographic manipulation.

ISBN: 9781321608083Subjects--Topical Terms:

3168407
Hydrologic sciences.

The Analysis and Synthesis of River Topography.
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100 1 $a Brown, Rocko Anthony. $3 3173412
245 1 4 $a The Analysis and Synthesis of River Topography.
300 $a 187 p.
500 $a Source: Dissertation Abstracts International, Volume: 76-07(E), Section: B.
500 $a Adviser: Gregory B. Pasterback.
502 $a Thesis (Ph.D.)--University of California, Davis, 2014.
506 $a This item must not be sold to any third party vendors.
520 $a Freshwater flora and fauna have been declining worldwide due to anthropogenic alterations to Earth's rivers and streams. To address this, rivers and streams are often restored by modifying or removing human induced stressors. River restoration in the form of topographic manipulation is often needed to remove or modify constraints that limit the potential for natural adjustments in channel topography that create and maintain physical habitat. The practice of river restoration has become a billion dollar industry nationally in the US alone, but is highly criticized as being ineffective because often the scientific foundations of restoration actions are unclear. Process based river restoration is an ideology based on restoring the fundamental processes that shape and maintain river systems. While process based restoration has a strong conceptual basis in achieving successful restoration, it still lacks the specificity needed for restoring rivers and streams through topographic manipulation. River restoration professionals need a way to analyze fluvial processes and invert that knowledge to synthesize topographies that yield those processes for river restoration design. Just as scientific analysis and synthesis are dual engines of the scientific method, they are necessary components in river restoration that involves topographic manipulation.
520 $a In this dissertation the approach is to develop a framework to blend the analysis and synthesis of fluvial topography for river restoration design and scientific inquiry. To do this, a "geomorphic covariance structure (GCS)," which is a univariate or bivariate spatial covariance amongst or between attributes of fluvial topography such as bed elevation, channel width, and curvature is used. Empirical data, analytical equations, and numerical models all support the idea that there are covarying aspects of channel topography shaped by flowing water. While there are numerous cases of covarying spatial variables in rivers, no attempt has been made to use this information to assess fluvial processes and then invert that knowledge to recreate the topography that yields them. This makes the use of GCS's to analyze and create the topography of rivers for specific form-process assemblages a unique and novel research. In this dissertation GCS's are used to evaluate processes associated with channel change in a mountain river. Next, a framework is developed for creating 2D topography of synthetic river valleys that are parameterized by the GCS. Finally, the GCS's associated with riffle-pool maintenance are used in the synthetic river valley modeling framework to reverse engineer the topography needed for flow convergence routing, a key mechanism that maintains relief in gravel and cobble bedded rivers.
590 $a School code: 0029.
650 4 $a Hydrologic sciences. $3 3168407
650 4 $a Limnology. $3 545788
690 $a 0388
690 $a 0793
710 2 $a University of California, Davis. $b Hydrologic Sciences. $3 1672932
773 0 $t Dissertation Abstracts International $g 76-07B(E).
790 $a 0029
791 $a Ph.D.
792 $a 2014
793 $a English
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3685184