3 professor, moe key laboratory of soft soils and geoenvironmental engineering, zhejiang university, china the infiltration capacity will decrease as the rainfall advances there have been numerous rainfall-runoff models to predict the amount of runoff during rainfall event, such as the green-ampt. Infiltration • list and describe inherent factors that affect soil infiltration • describe soil infiltration management practices • explain soil infiltration problems and ground's ability to infiltrate water review and identify each of the supplies from the soil testing kit that will be used during the lab activity • 3-inch-diameter ring. Name: betty smith date: march 9, 2015 instructor's name: professor charcacia sanders assignment: sci103 phase 3 lab report title: soil infiltration and runoff part i: field research 1 inch of rainfall shallow water infiltration (swi) deep water infiltration (dwi) runoff water (rw) evaporation water (ew). Ring infiltrometers are commonly used for in situ determination of soil hydraulic infiltration and runoff (swartzendruber and hillel, 1975 agassi et al, 1982 80 o j touma and j albergel fig 3 fitting eqn (1) on data obtained from the simulated rain experiment at z = locm with 026 f 001i (i = 1, , 6). Changes in pollutant discharges from surface runoff and subsurface flows at new compost-amended sites, compared to soil-only sites 4-16 5-1 infiltration rates for significant groupings of soil texture, moisture, and compaction conditions 5-1 5-2 observed horton equation parameter values for sandy and clayey soils 5-1 5-3. Surface runoff require reliable schemes of infiltration and subsequent redistribution of water throughout the soil profile therefore we focus on liquid water transport in a column of soil in lsms rainfall surface runoff the hydraulic van genuchten parameter constants (see eqs 2 and 3) for sand used in this experiment are. Sw}soil and water comparative assessment of infiltration, runoff and erosion of sprinkler irrigated soils francisco l santos joao l reis olga c martins n adia l 3 a b c (a) (b) fig1 laboratory sprinkler simulator showing: (a) plan section view of the soil samples placement and packing trays a, b, c, and. Processes  the rainfall is the dominant factor controlling the surface runoff and soil infiltration the higher the rainfall amount, the higher the runoff volume  agreater with the slope gradient under laboratory conditions slope runoff, soil infiltration and the influence factors, and (2) construct the prediction model of the.
Experiment and model results calculates the runoff coefficient of the existing unsealed/uncompressed underlying soil based on the approach of (3) with ∆θ θ θ = − s 0 where i1 infiltration rate of the stationary component [kg ( m2 s)-1], k hydraulic conductivity of the transport zone [(kg s) m-3], g gravity. Lab report subject code code & experiment title course code date section / group name members of group lecturer/instructor/tutor received date bfc there are, in addition, other important factors which influence the runoff generating process like natural surface detention, soil infiltration characteristics and the. Students experiment on simple physical models of runoff for which they are able to vary land surface vegetation, soil type, slope, volume of rainfall, intensity of rainfall,and potentially antecedent moisture conditions the lab is compared to infiltration excess volume as calculated by the nrcs curve number.
Name: nathan pierce date: april 22, 2014 instructor's name: kristina jantz assignment: sci103 phase 3 lab report title: soil infiltration and runoff instructions: enter the virtual lab and gather the information needed to complete the report from the field please type your answers when your lab report is complete, submit. (3)state key laboratory of water resources and hydropower engineering science, wuhan university, wuhan, 430072, people's republic of china more fertilizer in soil, which will result in more kcl concentration in surface runoff and ( 5) good subsurface drainage condition will increase the infiltration. The design and construction of a special-purpose laboratory catchment and rainfall simulator is described the equipment consists collect data about runoff and infiltration from several different types of soil, at various slopes and under widely differing (3) raindrops should attain the terminal velocities of natural rain 539.
Its unique position, soil roughness potentially affects surface processes such as infiltration, flow routing, erosion in this research, we carried out a laboratory experiment to assess roughness effects on runoff and soil loss we studied two and the runoff flux on the side without initial depressions was calculated (figure 3. When water falls to the ground as precipitation, it can either fill the spaces in the soil below ground or run across the surface in this video lesson, you will learn about the processes of infiltration and runoff, and how they are an important part of the water cycle on earth.
Content and lab derived from the usda-nrcs guides for educators please see inform students that during this lesson, the class will explore soil infiltration rates, what affects, problems that exist and management of it rainfall rate exceeds the soil's infiltration capacity runoff moves downslope or causes ponding.
Runoff and infiltration the term moisture effect will be used occasionally for brevity, and refers to the effect of the antecedent moisture status of the soil on soil cores for laboratory measurements of moisture retention and conductivity on the ida soil the rototiller loosened 3 the soil from an initial bulk density of 13 g per. Media to gather additional infiltration rate estimates and to investigate the potential effects of the infiltration media on the water quality of highway runoff a formulation of 70-percent sand, 15-percent clay, and 15-percent mulch had a steady-state infiltration rate of between 1 and 3 inches per hour two batches of the. A field experiment was conducted under simulated rainfall in runoff plots with a slope of 10% two common types of litter these factors were proved to be effective in rainfall interception –, thus possibly exerting strong effects on soil infiltration, surface runoff, and soil erosion in this study, the effects. Soil compaction can be used to more accurately predict stormwater runoff quantity when compared to on infiltration rate” journal (issue): journal of soil and water conservation, 61(3), 117-124 density and infiltration during lab- scale tests, and methods and techniques to recover infiltration capacity of.
Released into runoff and infiltration, the surface slope controlled the partitioning of total released bacterial chapter 3 – impacts of rainfall intensity and land slope on the release of fecal indicator bacteria from group/species remaining in the top 5 cm of soil after rainfall (msoil 5cm) for the lab-, plot-, and field-scale. Valuable information about the genesis of surface runoff, infiltration of water into soil and rainfall erodibility generation of surface runoff and infiltration of water into the soil horizons (see eg, [1-3]) they have experiment supplemented the experiments undertaken on the same soil sample in 2016, as well as field. Areas, while infiltration excess runoff prevails in northern semiarid areas  as china's underlying surface, and slope gradient on soil infiltration and pointed out that increases in rainfall intensity are key laboratory of soil erosion and dryland agriculture on the loess plateau under the institute of soil. During winter the soil surface is looseneci by frost action, and the stakes the soil by rain-beat decreases infiltration eapacity, and runoff increases 3 average rate of marker movement between mea•rement periods winter periods 2, 4, and 6 show the maximum rates of marker movement summer periods 3, 5, aad 7.