Falling-head slug test

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Method synopsis

Systematic characterization of alluvial sediment physical properties through grain size analysis and bulk density measurements to derive hydraulic conductivity, porosity, and van Genuchten parameters for unsaturated flow modeling.

Synthesized from method descriptions across 2 papers using this protocol.

Procedure from a recent peer-reviewed implementation

Steps below were extracted from the most recent peer-reviewed implementation of this protocol in the corpus — Modeling the Impact of Riparian Hollows on River Corridor Nitrogen Exports (2021), Frontiers in Water. Implementations in other papers (listed below) may differ.

1. Sediment characterization and parameterization
   Collected soil samples at 20cm intervals throughout top 100cm of soil column. Measured sand, silt, and clay percentages and bulk density to calculate hydraulic conductivity, porosity, residual water content, saturated water content, and van Genuchten parameters for pore-size distribution.
   Quantities: 20cm depth intervals, top 100cm of soil column, representative samples for grain size analysisDuration: During field campaign concurrent with water samplingConditions: Exposed floodplain cross-sections for soil characterization
   Equipment: soil sampling tools, grain size analysis equipment

Typical Equipment

• soil sampling tools
• grain size analysis equipment

Output Measurements

• hydraulic conductivity
• porosity
• residual water content
• saturated water content
• van Genuchten parameters

Papers Using This Protocol (2)

Species Studied With This Protocol

Places Where Used