Topologically random channel networks in the presence of environmental controls
Athol D. Abrahams · Geological Society of America Bulletin · 1975
Research Article| October 01, 1975 Topologically random channel networks in the presence of environmental controls ATHOL D. ABRAHAMS ATHOL D. ABRAHAMS 1School of Geography, University of New South Wales, Kensington, 2033, New South Wales, Australia Search for other works by this author on: GSW Google Scholar Author and Article Information ATHOL D. ABRAHAMS 1School of Geography, University of New South Wales, Kensington, 2033, New South Wales, Australia Publisher: Geological Society of America First Online: 01 Jun 2017 Online ISSN: 1943-2674 Print ISSN: 0016-7606 Geological Society of America GSA Bulletin (1975) 86 (10): 1459–1462. https://doi.org/10.1130/0016-7606(1975)862.0.CO;2 Article history First Online: 01 Jun 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn Email Permissions Search Site Citation ATHOL D. ABRAHAMS; Topologically random channel networks in the presence of environmental controls. GSA Bulletin 1975;; 86 (10): 1459–1462. doi: https://doi.org/10.1130/0016-7606(1975)862.0.CO;2 Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentBy SocietyGSA Bulletin Search Advanced Search Abstract The occurrence of topologically random channel networks in the presence of strong environmental controls does not necessarily indicate that network topology is insensitive to such controls. In areas where environmental controls have a preferred orientation, certain topologically distinct channel networks may be promoted where networks of a given magnitude flow in one direction and inhibited where they flow in another; but these biases in network topology may compensate for one another so effectively that they do not give rise to identifiable systematic deviations from topological randomness. This theme is illustrated by analyses of magnitude-4 channel networks from three areas in southeastern Australia. Goodness-of-fit tests indicate that the exhaustive samples of networks from these areas could have been drawn from topologically random populations. However, similar tests applied to subsamples selected according to network flow direction reveal biases in network topology in two of the areas. These biases, which are apparently due to microclimatic controls, signify that, although the networks in each area may belong to a topologically random population, they are not composed of randomly merging stream channels. First Page Preview Close Modal You do not have access to this content, please speak to your institutional administrator if you feel you should have access.