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Related Experiment Video

Updated: Jul 7, 2026

Dissolved Solute Sampling Across an Oxic-Anoxic Soil-Water Interface Using Microdialysis Profilers

Dissolved Solute Sampling Across an Oxic-Anoxic Soil-Water Interface Using Microdialysis Profilers

Published on: March 24, 2023

A rapid method for hydraulic profiling in unconsolidated formations.

Peter Dietrich¹, James J Butler, Klaus Faiss

¹Department of Monitoring and Exploration Technologies, Helmholtz Centre for Environmental Research, UFZ, Permoserstrasse 15, D-04318 Leipzig, Germany. peter.dietrich@ufz.de

|March 1, 2008

Summary

A new direct-push injection logger rapidly measures subsurface hydraulic conductivity (K) variations. This tool quickly identifies potential contaminant pathways and barriers in shallow unconsolidated environments.

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Published on: August 19, 2018

Area of Science:

Geotechnical Engineering
Environmental Science
Hydrogeology

Background:

Understanding vertical variations in hydraulic conductivity (K) is crucial for predicting contaminant transport in subsurface environments.
Existing methods for obtaining K data can be time-consuming and labor-intensive.

Purpose of the Study:

To introduce and assess the viability of a direct-push injection logger for rapid K profiling in shallow unconsolidated settings.
To demonstrate the tool's capability in identifying zones that influence contaminant movement.

Main Methods:

A small-diameter direct-push tool with an integrated screen was developed.
Water is injected through the screen during advancement to maintain clarity.
Injection rate and pressure are measured at desired depths to derive a proxy for K.
Vertical profiles of the K proxy were transformed into K profiles using regression analysis.

Main Results:

The direct-push injection logger successfully obtained K information rapidly in shallow unconsolidated settings.
The tool effectively identified zones acting as conduits or barriers to contaminant migration.
Assessment at a field site in eastern Germany validated the approach's effectiveness.

Conclusions:

The direct-push injection logger provides a rapid and effective method for characterizing vertical hydraulic conductivity variations.
This technology can significantly aid in the assessment of contaminant transport pathways and barriers.
The tool offers a valuable advancement for subsurface investigations in unconsolidated materials.