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240813s2024 xx |||||o 00| ||eng c |
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|a 10.1111/gwat.13437
|2 doi
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|a eng
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|a Rogers, Karli M
|e verfasserin
|4 aut
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|a Utility of an Instantaneous Salt Dilution Method for Measuring Streamflow in Headwater Streams
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|c 2024
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|a Text
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|a ƒaComputermedien
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|a ƒa Online-Ressource
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|a Date Revised 13.08.2024
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|a published: Print-Electronic
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|a Citation Status Publisher
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|a Published 2024. This article is a U.S. Government work and is in the public domain in the USA.
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|a Streamflow records are biased toward large streams and rivers, yet small headwater streams are often the focus of ecological research in response to climate change. Conventional flow measurement instruments such as acoustic Doppler velocimeters (ADVs) do not perform well during low-flow conditions in small streams, truncating the development of rating curves during critical baseflow conditions dominated by groundwater inflow. We revisited an instantaneous solute tracer injection method as an alternative to ADVs based on paired measurements to compare their precision, efficiency, and feasibility within headwater streams across a range of flow conditions. We show that the precision of discharge measurements using salt dilution by slug injection and ADV methods were comparable overall, but salt dilution was more precise during the lowest flows and required less time to implement. Often, headwater streams were at or below the depth threshold where ADV measurements could even be attempted and transects were complicated by coarse bed material and cobbles. We discuss the methodological benefits and limitations of salt dilution by slug injection and conclude that the method could facilitate a proliferation of streamflow observation across headwater stream networks that are highly undersampled compared to larger streams
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|a Journal Article
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|a Fair, Jennifer B
|e verfasserin
|4 aut
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|a Hitt, Nathaniel P
|e verfasserin
|4 aut
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|a Kessler, Karmann G
|e verfasserin
|4 aut
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| 700 |
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|a Kelly, Zachary A
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Briggs, Martin
|e verfasserin
|4 aut
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|u http://dx.doi.org/10.1111/gwat.13437
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