Publication Details |
Category | Text Publication |
Reference Category | Journals |
DOI | 10.1002/2016WR019008 |
Title (Primary) | Reassessing the MADE direct-push hydraulic conductivity data using a revised calibration procedure |
Author | Bohling, G.C.; Liu, G.; Dietrich, P. ; Butler jr., J.J. |
Source Titel | Water Resources Research |
Year | 2016 |
Department | MET |
Volume | 52 |
Issue | 11 |
Page From | 8970 |
Page To | 8985 |
Language | englisch |
UFZ wide themes | RU5; |
Abstract | In earlier work, we presented a geostatistical assessment of high-resolution hydraulic conductivity (K) profiles obtained at the MADE site using direct-push (DP) methods. The profiles are derived from direct-push injection logger (DPIL) measurements that provide a relative indicator of vertical variations in K with a sample spacing of 1.5 cm. The DPIL profiles are converted to K profiles by calibrating to the results of direct-push permeameter (DPP) tests performed at selected depths in some of the profiles. Our original calibration used a linear transform that failed to adequately account for an upper limit on DPIL responses in high-K zones and noise in the DPIL data. Here we present a revised calibration procedure that accounts for the upper limit and noise, leading to DPIL K values that display a somewhat different univariate distribution and a lower lnK variance (5.9 ± 1.5) than the original calibration values (6.9 ± 1.8), although each variance estimate falls within the other's 95% confidence interval. Despite the change in the univariate distribution, the autocorrelation structure and large-scale patterns exhibited by the revised DPIL K values still agree well with those exhibited by the flowmeter data from the site. We provide the DPIL and DPP data, along with our calibrated DPIL K values, in the Supporting Information. |
Persistent UFZ Identifier | https://www.ufz.de/index.php?en=20939&ufzPublicationIdentifier=18497 |
Bohling, G.C., Liu, G., Dietrich, P., Butler jr., J.J. (2016): Reassessing the MADE direct-push hydraulic conductivity data using a revised calibration procedure Water Resour. Res. 52 (11), 8970 - 8985 10.1002/2016WR019008 |