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Flow velocity and the hydrologic behavior of streams during baseflow

Publication ,  Journal Article
Wondzell, SM; Gooseff, MN; McGlynn, BL
Published in: Geophysical Research Letters
December 28, 2007

Diel variations in stream discharge have long been recognized, but are relatively little studied. Here we demonstrate that these diel fluctuations can be used to investigate both strearnflow generation and network routing. We treat evapo-transpiration (ET) as a distributed impulse function in an advection model and analyze the effect of ET on diel fluctuations in discharge. We show that when flow velocity is high during high baseflow, discharge fluctuations tend to be in phase and constructive interference reinforces ET-generated signals resulting in strong diel fluctuations measured at a gauging station at the mouth of the watershed. As flow velocity slows with baseflow recession, ET-generated signals are increasingly out of phase so that fluctuations in discharge are masked by destructive interference. These results demonstrate that naturally produced fluctuations in discharge constitute discrete impulse ftmctions that can be used to analyze eco-hydrologic behavior of whole-watersheds during baseflow periods. Copyright 2007 by the American Geophysical Union.

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Published In

Geophysical Research Letters

DOI

ISSN

0094-8276

Publication Date

December 28, 2007

Volume

34

Issue

24

Related Subject Headings

  • Meteorology & Atmospheric Sciences
 

Citation

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Wondzell, S. M., Gooseff, M. N., & McGlynn, B. L. (2007). Flow velocity and the hydrologic behavior of streams during baseflow. Geophysical Research Letters, 34(24). https://doi.org/10.1029/2007GL031256
Wondzell, S. M., M. N. Gooseff, and B. L. McGlynn. “Flow velocity and the hydrologic behavior of streams during baseflow.” Geophysical Research Letters 34, no. 24 (December 28, 2007). https://doi.org/10.1029/2007GL031256.
Wondzell SM, Gooseff MN, McGlynn BL. Flow velocity and the hydrologic behavior of streams during baseflow. Geophysical Research Letters. 2007 Dec 28;34(24).
Wondzell, S. M., et al. “Flow velocity and the hydrologic behavior of streams during baseflow.” Geophysical Research Letters, vol. 34, no. 24, Dec. 2007. Scopus, doi:10.1029/2007GL031256.
Wondzell SM, Gooseff MN, McGlynn BL. Flow velocity and the hydrologic behavior of streams during baseflow. Geophysical Research Letters. 2007 Dec 28;34(24).
Journal cover image

Published In

Geophysical Research Letters

DOI

ISSN

0094-8276

Publication Date

December 28, 2007

Volume

34

Issue

24

Related Subject Headings

  • Meteorology & Atmospheric Sciences