Rights statement: ©2013. American Geophysical Union. All Rights Reserved.
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Research output: Contribution to Journal/Magazine › Literature review › peer-review
Research output: Contribution to Journal/Magazine › Literature review › peer-review
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TY - JOUR
T1 - Macropores and water flow in soils revisited
AU - Beven, Keith
AU - Germann, Peter
N1 - ©2013. American Geophysical Union. All Rights Reserved.
PY - 2013/6
Y1 - 2013/6
N2 - The original review of macropores and water flow in soils by Beven and Germann is now 30 years old and has become one of the most highly cited papers in hydrology. This paper attempts to review the progress in observations and theoretical reasoning about preferential soil water flows over the intervening period. It is suggested that the topic has still not received the attention that its importance deserves, in part because of the ready availability of software packages rooted firmly in the Richards domain, albeit that there is convincing evidence that this may be predicated on the wrong experimental method for natural conditions. There is still not an adequate physical theory linking all types of flow, and there are still not adequate observational techniques to support the scale dependent parameterizations that will be required at practical field and hillslope scales of application. Some thoughts on future needs to develop a more comprehensive representation of soil water flows are offered.
AB - The original review of macropores and water flow in soils by Beven and Germann is now 30 years old and has become one of the most highly cited papers in hydrology. This paper attempts to review the progress in observations and theoretical reasoning about preferential soil water flows over the intervening period. It is suggested that the topic has still not received the attention that its importance deserves, in part because of the ready availability of software packages rooted firmly in the Richards domain, albeit that there is convincing evidence that this may be predicated on the wrong experimental method for natural conditions. There is still not an adequate physical theory linking all types of flow, and there are still not adequate observational techniques to support the scale dependent parameterizations that will be required at practical field and hillslope scales of application. Some thoughts on future needs to develop a more comprehensive representation of soil water flows are offered.
KW - preferential flow
KW - soil physics
KW - solute transport
KW - Stokes flow
KW - hillslope hydrology
KW - celerity
KW - ELECTRICAL-RESISTIVITY TOMOGRAPHY
KW - KINEMATIC WAVE APPROXIMATION
KW - LATERAL PREFERENTIAL FLOW
KW - HYDROLOGIC-RESPONSE SIMULATION
KW - HILLSLOPE THRESHOLD RESPONSE
KW - MULTIPLE ANIONIC TRACERS
KW - UNSATURATED POROUS-MEDIA
KW - PHYSICALLY-BASED MODEL
KW - SUBSURFACE STORM FLOW
KW - DUAL-POROSITY MODEL
U2 - 10.1002/wrcr.20156
DO - 10.1002/wrcr.20156
M3 - Literature review
VL - 49
SP - 3071
EP - 3092
JO - Water Resources Research
JF - Water Resources Research
SN - 0043-1397
IS - 6
ER -