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Hyporheic exchange in mountain rivers I: Mechanics and environmental effectsAuthor(s): Daniele Tonina; John M. Buffington
Source: Geography Compass. 3(3): 1063-1086.
Publication Series: Scientific Journal (JRNL)
Station: Rocky Mountain Research Station
PDF: Download Publication (636.38 KB)
DescriptionHyporheic exchange is the mixing of surface and shallow subsurface water through porous sediment surrounding a river and is driven by spatial and temporal variations in channel characteristics (streambed pressure, bed mobility, alluvial volume and hydraulic conductivity). The significance of hyporheic exchange in linking fluvial geomorphology, groundwater, and riverine habitat for aquatic and terrestrial organisms has emerged in recent decades as an important component of conserving, managing, and restoring riverine ecosystems. Here, we review the causes and environmental effects of hyporheic exchange, and provide a simple mathematical framework for examining the mechanics of exchange. A companion paper explores the potential effects of channel morphology on exchange processes and the hyporheic environments that may result in mountain basins (Buffington and Tonina 2009).
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CitationTonina, Daniele; Buffington, John M. 2009. Hyporheic exchange in mountain rivers I: Mechanics and environmental effects. Geography Compass. 3(3): 1063-1086.
Keywordshyporheic exchange, subsurface water, porous sediment, riverine ecosystems, channel characteristics
- Geomorphic controls on hyporheic exchange flow in mountain streams.
- Hyporheic exchange in mountain rivers II: Effects of channel morphology on mechanics, scales, and rates of exchange
- Hyporheic exchange in gravel bed rivers with pool-riffle morphology: Laboratory experiments and three-dimensional modeling
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