Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
}
TY - JOUR
T1 - Anisotropy and depth-related heterogeneity of hydraulic conductivity in a bog peat. I
T2 - laboratory measurements
AU - Beckwith, C. W.
AU - Baird, A. J.
AU - Heathwaite, A. L.
N1 - Anisotropy and depth-related heterogeneity of hydraulic conductivity in a bog peat. I: laboratory measurements 10.1002/hyp.1116
PY - 2003/1
Y1 - 2003/1
N2 - Anisotropy and heterogeneity of hydraulic conductivity (K) are suspected of greatly affecting rates and patterns of ground-water seepage in peats. A new laboratory method, termed here the modified cube method, was used to measure horizontal and vertical hydraulic conductivity (Kh and Kv) of 400 samples of bog peat. The new method avoids many of the problems associated with existing field and laboratory methods, and is shown to give relatively precise measurements of K. In the majority of samples tested, Kh was much greater than Kv, indicating that the bog peat was strongly anisotropic. Log10Kh, log10Kv, and log10 (Kh/Kv) were found to vary significantly with depth, although none of the relationships was simple. We comment on the scale dependency of our measurements.
AB - Anisotropy and heterogeneity of hydraulic conductivity (K) are suspected of greatly affecting rates and patterns of ground-water seepage in peats. A new laboratory method, termed here the modified cube method, was used to measure horizontal and vertical hydraulic conductivity (Kh and Kv) of 400 samples of bog peat. The new method avoids many of the problems associated with existing field and laboratory methods, and is shown to give relatively precise measurements of K. In the majority of samples tested, Kh was much greater than Kv, indicating that the bog peat was strongly anisotropic. Log10Kh, log10Kv, and log10 (Kh/Kv) were found to vary significantly with depth, although none of the relationships was simple. We comment on the scale dependency of our measurements.
KW - bog peat
KW - hydraulic conductivity
KW - anisotropy
KW - heterogeneity
KW - modified cube method
U2 - 10.1002/hyp.1116
DO - 10.1002/hyp.1116
M3 - Journal article
VL - 17
SP - 89
EP - 101
JO - Hydrological Processes
JF - Hydrological Processes
SN - 0885-6087
IS - 1
ER -