Revision as of 01:14, 11 July 2020 view source Tuflowduncan (talk \| contribs) Bureaucrats, Administrators 1,210 edits →Porosity ← Older edit		Revision as of 01:14, 11 July 2020 view source Tuflowduncan (talk \| contribs) Bureaucrats, Administrators 1,210 edits →Initial Moisture Newer edit →
Line 128: === Initial Moisture === The initial moisture value represents the fraction of the soil that is initially wet. As both initial moisture and porosity are expressed as fractions, the soil capacity is defined as the difference between them both. As such, the initial moisture should not exceed the porosity otherwise soil capacity will be set to zero with no infiltration occurring for that soil type. A [[TUFLOW Message 2508 \| 2508 WARNING]] ~~of 2508~~ is issued if this is the case.<br> As you increase initial moisture at the beginning of your simulation, you experience less infiltration (as you are closer to the soil capacity), therefore have more run-off and a quicker response. Figure 9 shows the degree of change to cumulative infiltration with varying initial moisture and the effect on the catchment can be seen in Figure 10. Line 136: [[File:Init moisture F11 catchment.png\|600px\|Figure 10: Sensitivity of simulated flow at the Cefn-Brwn gauge location in the Plynlimon Gwy catchment to the initial moisture parameter in the Green-Ampt infiltration model.\|border]]<br> '''Figure 10: Sensitivity of simulated flow at the Cefn-Brwn gauge location in the Plynlimon Gwy catchment to the initial moisture parameter in the Green-Ampt infiltration model.'''<br> == In built USDA soil type ==

Green-Ampt Infiltration Parameters: Difference between revisions