Evaluation of vertical variations in hydraulic conductivity in unconsolidated sediments |
| |
Authors: | Dietze Michael Dietrich Peter |
| |
Affiliation: | 1. Department of Monitoring and Exploration Technologies, Helmholtz Centre for Environmental Research, UFZ, Permoserstra?e 15, D‐04318 Leipzig, Germany;2. +49 (341) 235 1253;3. fax +49 (341) 235 1837;4. peter.dietrich@ufz.de |
| |
Abstract: | Detailed information on vertical variations in hydraulic conductivity (K) is essential to describe the dynamics of groundwater movement at contaminated sites or as input data used for modeling. K values in high vertical resolution should be determined because K tends to be more continuous in the horizontal than in the vertical direction. To determine K in shallow unconsolidated sediments and in the vertical direction, the recently developed direct-push injection logger can be used. The information obtained by this method serves as a proxy for K and has to be calibrated to obtain quantitative K values of measured vertical profiles. In this study, we performed direct-push soil sampling, sieve analyses and direct-push slug tests to obtain K values in vertical high resolution. Using the results of direct-push slug tests, quantitative K values obtained by the direct-push injection logger could be determined successfully. The results of sieve analyses provided lower accordance with the logs due to the inherent limitations of the sieving method. |
| |
Keywords: | |
本文献已被 PubMed 等数据库收录! |
|