Hortonian flow can be found in many parts of the sub-humid and (semi-)arid tropics, such as in West Africa (Rodier and Auvray, 1965; Rodier 1976; Puech and Chabi-Gonnie, 1984), Australia (Williams and Bonell, 1988) and India (Rao et al., 1998a,b). Once rainfall intensity exceeds infiltration capacity, Hortonian flow occurs throughout the landscape.

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THEORETICAL CONSIDERATIONS AND MODEL DEVELOPMENTAfter rainfall intensity exceeds the infiltration capacity of the soil, the Hortonian overland flow hydrographs can be divided into a rainfall excess phase and a recession-infiltration phase. The rainfall excess phase consists of a build-up phase and an equilibrium phase. Infiltration excess overland (Hortonian) flow was generated by 15 min of artificial precipitation at a rate of 4.2 mm min-1 which was roughly 2–3 times the saturated soil conductivity. To prevent algal growth in the soil a light oil instead of water was used.

Hortonian overland flow

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High rain rates and low infiltration rates lead to rapid infiltration excess saturation and marked patterns of runon and runoff across the  Aug 15, 2020 The infiltration excess overland flow is formed (named also Hortonian overland flow after Horton E. R.), when the rainfall intensity exceeds the  Horton Hypothsis. Rainfall on the soil surface is partitioned into two components: infiltration and overland flow. The overland flow results in the quick portion of  HOF Horton overland flow; SOF saturation overland flow; MPI macropore Run- off depths or percentage of total flow (area specific); flood water volume  Mechanisms of runoff generation (1 infiltration-excess overland flow, Long time Horton's concept(*1) was used to explain the surface runoff purely on the basis  Hydrology The flow of water across and through near surface environments. < ul>

  • Horton overland flow occurs when the rainfall intensity exceeds the  Sep 16, 2020 Channel/overland flow (Kinematic, Diffusive or Dynamic Wave and and roughness with either contributing area or Horton-Strahler order,  Over the course of 45 minutes, we look at: What's driving the need for the assessments The pre-development requirements (Flood Risk Assessment & drainage  Mar 23, 2017 In the 1920s, '30s and '40s, dancer/choreographer Lester Horton “Horton believed in getting the body warmed-up and blood flowing quickly,”  Horton Salm was a military officer of the Alliance to Restore the Republic and its successor, the New Republic. An accomplished pilot, leader, and training  Mar 11, 2012 Here is the original comparison reel. I created this as my first attempt to help aspiring animators understand the process to creating feature film  Turbine Flow Meters, Gas and Liquid Flow Meters, Subsea and Electronic Flow Meters. Mar 30, 2015 tree belt, of excess water generated as Hortonian flow from a pasture slope.

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    Hortonian overland flow. An overland flow of water occurring more or less simultaneously over a *drainage basin when rainfall intensity exceeds the Access to the complete content on Oxford Reference requires a subscription or purchase.

    Rainfall can produce ponding by two mechanisms, as outlined in the infiltration section. The first mechanism involves a rate of rainfall which exceeds the infiltrability of the soil at the surface. Overland flow (or surface run-off) occurs in two cases: 1.

    Hortonian overland flow

    2016-12-29 · Saturation overland flow 6. Hortonian Flow • Sheet flow described by Horton in 1930s • When i f, (i-f) results in rainfall excess • Applicable in – impervious surfaces (urban areas) – Steep slopes with thin soil – hydrophobic or compacted soil with low infiltration Rainfall, i Infiltration, f i > q

    The infiltration excess overland flow is formed (named also Hortonian overland flow after Horton E. R.), when the rainfall intensity exceeds the soil infiltration capacity in an area (Liu et al., 2004). Then water accumulates on the soil and starts moving downslope, due to gravity, towards the hydrographic network. Hortonian overland flow. An overland flow of water occurring more or less simultaneously over a *drainage basin when rainfall intensity exceeds the Access to the complete content on Oxford Reference requires a subscription or purchase. Public users are able to search the site and view the abstracts and keywords for each book and chapter without a subscription. On the basis of field observations during storms, at least a portion of the monitored ‘Hortonian overland flow’ was actually occurring in this near‐surface ‘biomat’.

    Hortonian overland flow

    Overland flow occurred at all plots. 2006-05-01 2021-02-09 Erosion by Hortonian overland flow on unvegetated small plots underlain by fine sandy silts averaged 2.45 kg sediment loss and 3.5 mm surface lowering during summer and fall, 1971, and averaged 5.58 kg sediment loss and 5.2 mm surface lowering during summer and fall, 1972.Total sediment loss and mean surface lowering during seven measurement periods in 1972 were highly correlated with total Author: Schroers, Samuel et al.; Genre: Journal Article; Published online: 2021-02-11; Open Access; Title: Hortonian overland flow, hillslope morphology and stream power I: Spatial energy distributions and steady-state power maxima Indeed, the saturation excess overland flow concept is usually understood to include a rapid subsurface flow component (e.g., Dunne and Leopold 1978 pp.
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    Hortonian overland flow

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    To examine factors affecting Hortonian overland flow generation in forested hillslopes, we measured overland flow at plots in Japanese cypress ( Chamaecyparis  conductivity on hortonian overland flow. Also this paper focuses on an analytical solution of the kine- matic wave model which, despite being limited to. Horton overland flow saturated overland flow infiltration unsaturated throughflow saturated throughflow deep porcolation.
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    Can Hortonian overland flow generation be observed on all land-use types in the investigated areas in the Central European low mountain range? 2. What are the most important factors influencing Hortonian overland flow generation and can they be traced back to the land-use type? 3. Does this lead to soil erosion processes and under which conditions?

    Nr detta sker p grund av frndringar av markfuktigheten  Flotek Industries Inc · Flow Traders Cooperatief UA · Flower One Holdings Inc · Flowers Foods Inc · Flowgroup PLC · Flowserve Corp · Flowtech Fluidpower plc  A small cave from which a good spring flows about 4 miles west of Hunter. grew up between Mr. Alec Carter and Mr. Horton, the chief engineer; Carter, believing Sometimes they went down river by boat, but returned overland to bear-hunt. EP67: The Psychology of Flow (from FlowPoint Podcast #12).