Tributary arrangements in fluvial systems

Flint, Jean-Jacques

doi:10.2475/ajs.280.1.26

Cited by 50 publications

(24 citation statements)

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“…Although the dynamics of confluent meander bends have not been studied extensively, the occurrence of this type of fluvial feature has Geomorphology 163-164 (2012) 84-98 been documented in many meandering river systems (Callaway, 1902;Davis, 1903;Flint, 1980;Hills, 1983;Abrahams, 1984a,b). Early studies hypothesized about the development and maintenance of confluent meander bends.…”

Section: Introductionmentioning

confidence: 98%

“…Moreover, as a confluent meander bend migrates down valley and the tributary path length increases, the tributary is eventually captured by the outer bank of the next bend upstream that curves toward the same side of the valley as the tributary, forming another confluent meander bend. Investigations of tributary development and arrangement (Flint, 1980;Abrahams, 1984a,b) and inventories of the locations of tributary junction along bends of selected meandering rivers (Hills, 1983) noted the preferential entry of tributaries on the outside of meander bends. These studies and speculation that confluent meander bends may represent a quasi-stable channel configuration (Parker, 1996) have been the only scientific references to this confluence planform for over a century.…”

Section: Introductionmentioning

confidence: 99%

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Flow structure and channel morphology at a natural confluent meander bend

2012

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Section: Introductionmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

Flow structure and channel morphology at a natural confluent meander bend

2012

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“…The tendency of larger tributaries to connect with the trunk stream on the outside of meander bends, and the general absence of confluences inside bends has been noted before (Callaway, 1902;Davis, 1903;Flint, 1980;Abrahams, 1984;Riley and Rhoads, 2012) has not been studied in the region, but has been noted elsewhere (Jennings et al, 1976;Frank and Jennings, 1979;Mylroie and Mylroie, 1990;Fabel et al, 1996;Worthington, 2005;Mocochain et al, 2009), and ground water flow studies in Kentucky have found evidence of meander by-passing by subsurface flow (Ray and Blair, 2005).…”

Section: Discussion and Interpretationsmentioning

confidence: 99%

Badass geomorphology

Phillips

2014

Earth Surf Processes Landf

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The archetypal badass is individualistic, non-conformist, and able to produce disproportionate results. The badass concept is applied here to geomorphology. The individualistic concept of landscape evolution (ICLE) is introduced, based on three propositions: excess evolution space, capacity of all landforms to change, and variable selection pressure from environmental factors within and encompassing landscapes. ICLE indicates that geomorphic systems are idiosyncratic to some extent, and that even where two systems are similar, this is a happenstance of similar environmental selection, not an attractor state. As geomorphic systems are all individualistic, those that are also non-conformist with respect to conventional wisdoms and have amplifier effects are considered badass. Development of meander bends on a section of the Kentucky River illustrates these ideas. The divergence of karst and fluvial forms on the inner and outer bends represents unstable amplifying effects. The divergence is also individualistic, as it can be explained only by combining general laws governing surface and subsurface flow partitioning with a specific geographical and environmental setting and the history of Quaternary downcutting of the Kentucky River. Landscape evolution there does not conform to any conventional theories or conceptual frameworks of geomorphology. The badass traits of many geomorphic systems have implications for the systems themselves, attitudes toward geomorphic practice, and appreciation of landforms. Badass geomorphology and the ICLE reflect a view, and approach to the study of, landforms as the outcome of the interplay of general laws, place-specific controls, and history. Badass geomorphology also implies a research style receptive to contraventional This article is protected by copyright. All rights reserved.wisdoms. Aesthetically, amplifier effects and individualism guarantee an essentially infinite variety of landforms and landscapes that geoscientists can appreciate both artistically and scientifically. Non-conformity makes the interpretation and understanding of this variety more challenging-and while that increases the degree of difficulty, it also makes for more interesting and compelling professional challenges.

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“…However, the 1980s marked the beginning of a period in which confluence, tributary and network studies developed rapidly. Key contributions were concerned with: confluence morphology, hydraulics and sedimentology (Mosley, 1976;Best, 1986Best, , 1988Roy et al, 1988), tributary-induced changes in channel form (Richards, 1980;Roy and Woldenberg, 1986;Rhoads, 1987) and bed sediments (Church and Kellerhals, 1978;Knighton, 1980), the ecological role of tributaries along unregulated (Bruns et al, 1984) and regulated rivers (Petts, 1984;Petts and Greenwood, 1985), tributaries as repositories of paleoflood information (Kochel and Baker, 1982) and tributary network structure (Abrahams and Campbell, 1976;Flint, 1980;Abrahams and Updegraph, 1987). Figure 1.1 indicates the rapid increase in the volume of published work on tributaries and confluences in the period since 1980 and illustrates how the initial impetus of the 1980s was consolidated in the 1990s.…”

Section: Introductionmentioning

confidence: 99%