On the Non-Linearity of Sub-Surface and Groundwater-Runoff

Takagi, Fusetsu; Matsubayashi, Uichiro

doi:10.2208/jscej1969.1979.283_45

Cited by 3 publications

(2 citation statements)

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“…Similarity framework of the pressure-head distribution A method using a similarity framework has been often applied to runoff processes to generalise an assessment of the effects of catchment properties (Takagi and Matsubayashi, 1979;Harman and Sivapalan, 2009). We also introduce such a method to assess the dependence of RBPI on the properties of slope topography and soil physics.…”

Section: Appendix Bmentioning

confidence: 99%

A paradigm shift in stormflow predictions for active tectonic regions with large-magnitude storms: generalisation of catchment observations by hydraulic sensitivity analysis and insight into soil-layer evolution

Tani¹

2013

Hydrol. Earth Syst. Sci.

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Abstract. In active tectonic regions with large-magnitude storms, it is still difficult to predict stormflow responses by distributed runoff models from the catchment properties without a parameter calibration using observational data. This paper represents an attempt to address the problem. A review of observational studies showed that the stormflow generation mechanism was heterogeneous and complex, but stormflow responses there were simply simulated by a single tank with a drainage hole when the stormflowcontribution area was spatially invariable due to the sufficient amount of rainfall supply. These results suggested such a quick inflow/outflow waveform transmission was derived from the creation of a hydraulic continuum under a quasisteady state. General conditions necessary for the continuum creation were theoretically examined by a sensitivity analysis for a sloping soil layer. A new similarity framework using the Richards equation was developed for specifying the sensitivities of waveform transmission to topographic and soil properties. The sensitivity analysis showed that saturationexcess overland flow was generally produced from a soil layer without any macropore effect, whereas the transmission was derived mainly from the vertical unsaturated flow instead of the downslope flow in a soil layer with a large drainage capacity originated from the macropore effect. Both were possible for the quick transmission, but a discussion on the soil-layer evolution process suggested that an inhibition of the overland flow due to a large drainage capacity played a key role, because a confinement of the water flow within the soil layer might be needed for the evolution against strong erosional forces in the geographical regions. The long history of its evolution may mediate a relationship between simple stormflow responses and complex catchment properties. As a result, an insight into this evolution process and an inductive evaluation of the dependences on catchment properties by comparative hydrology are highly encouraged to predict stormflow responses by distributed runoff models.

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Section: Appendix Bmentioning

confidence: 99%

A paradigm shift in stormflow predictions for active tectonic regions with large-magnitude storms: generalisation of catchment observations by hydraulic sensitivity analysis and insight into soil-layer evolution

Tani¹

2013

Hydrol. Earth Syst. Sci.

View full text Add to dashboard Cite

show abstract

“…A similarity analysis was sometimes applied to runoff processes to generalize the assessment on the effects of catchment properties on the rainfall-runoff responses (Takagi and Matsubayashi, 1979;Harman and Sivapalan, 2009). Here we introduce a similarity framework to assess the dependence of RBPI on the domain properties, which consist of the slope topography and soil physics.…”

Section: Similarity Framework For a Sensitivity Analysismentioning

confidence: 99%

A paradigm shift in predicting stormflow responses in an active tectonic region through a similarity analysis of pressure propagation in a hydraulic continuum

Tani¹

2013

Preprint

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Soil layers on hillslopes acts as systems in quasi-steady states generating rainfall-stormflow responses that are controlled by pressure propagation in a hydraulic continuum established when the rainfall volume is sufficiently large. A similarity analysis for quantifying the sensitivity of the stormflow response and recession limb to topographic and soil properties in a sloping permeable domain showed that the deviation of stormflow responses in the hydraulic continuum decreases due to the macropore effect. The rapid responses seem to be naturally derived from the evolution of the soil layer with the assistance of the vegetation-root system and effective drainage systems in zero-order catchments in active tectonic regions with heavy storms. To predict stormflow responses using distributed runoff models, a paradigm shift to consider this evolution process is needed because the simple stormflow responses and complex and heterogeneous catchment properties are poorly related, but may be mainly determined by soil evolution processes

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鉛直不飽和浸透に基づく新しい洪水流出モデルの適用による山地小流域の流出機構の再検討

Tani

2023

J. Japan Soc. Hydrol. and Water Resour.

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On the Non-Linearity of Sub-Surface and Groundwater-Runoff

Cited by 3 publications

References 1 publication

A paradigm shift in stormflow predictions for active tectonic regions with large-magnitude storms: generalisation of catchment observations by hydraulic sensitivity analysis and insight into soil-layer evolution

A paradigm shift in stormflow predictions for active tectonic regions with large-magnitude storms: generalisation of catchment observations by hydraulic sensitivity analysis and insight into soil-layer evolution

A paradigm shift in predicting stormflow responses in an active tectonic region through a similarity analysis of pressure propagation in a hydraulic continuum

鉛直不飽和浸透に基づく新しい洪水流出モデルの適用による山地小流域の流出機構の再検討

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