Watershed structural influences on the distributions of stream network water and solute travel times under baseflow conditions

作者: Anna Bergstrom , Brian McGlynn , John Mallard , Tim Covino

DOI: 10.1002/HYP.10792

关键词: Environmental scienceDischargeRange (statistics)Magnitude (mathematics)Travel timeWatershedHydrologyBiogeochemical cycleStream networkBaseflow

摘要: Watershed structure influences the timing, magnitude, and spatial location of water solute entry to stream networks. In turn, reach transport velocities network geometry (travel distances) further influence timing export from watersheds. Here, we examine how watershed organization can affect travel times delivery arrival at outlet. We analysed quantified relationship between discharge velocity across six study watersheds (11.4 62.8 km2) located in Sawtooth Mountains central Idaho, USA. Based on these analyses, developed time functions for each watershed. found that structure, geometry, variable magnitude inputs have a pronounced distances within network. Accordingly, sample taken outlet is composed solutes sourced experienced range suggest understanding quantifying distributions are valuable deconvolving signals observed outlets into their temporal sources, separating terrestrial in-channel hydrological, biogeochemical, ecological in-stream observations. Copyright © 2016 John Wiley & Sons, Ltd.

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