Search for the optimality signature of river network development
- Authors
- Paik, Kyungrock
- Issue Date
- 26-10월-2012
- Publisher
- AMER PHYSICAL SOC
- Citation
- PHYSICAL REVIEW E, v.86, no.4
- Indexed
- SCIE
SCOPUS
- Journal Title
- PHYSICAL REVIEW E
- Volume
- 86
- Number
- 4
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/107184
- DOI
- 10.1103/PhysRevE.86.046110
- ISSN
- 1539-3755
- Abstract
- Whether the evolution of natural river networks pursues a certain optimal state has been a most intriguing and fundamental question. There have been many optimality hypotheses proposed but it has yet to be proved which of these best serves as a quantitative signature of river network development. Here, this fundamental question is investigated for the five hypotheses of "minimum total energy expenditure," "minimum total energy dissipation rate," "minimum total stream power," "minimum global energy expenditure rate," and "minimum topological energy." Using simple example landscapes, I examined whether any of these hypotheses pursues both the treelike river network formation and the concave stream longitudinal profile, the two characteristic patterns of natural landscapes. It is found that none of these hypotheses captures both patterns under the steady-state condition where the balance between tectonic uplift and sediment loss is satisfied. These findings are further verified through simulations of landscapes that satisfy given optimality criteria using an optimization method.
- Files in This Item
- There are no files associated with this item.
- Appears in
Collections - College of Engineering > School of Civil, Environmental and Architectural Engineering > 1. Journal Articles
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.