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What is the difference between “infiltration rate” and infiltrability?
Infiltration rate is the actual rate (cm/hr) of downward movement of water from the soil surface into the soil under certain wetting conditions. Infiltrability is the infiltration capacity or the maximum possible infiltration rate assuming that there is no limitation of the water supply.
Define the following:
- Capillary rise:
- soil moisture redistribution:
- Is the movement of water from the saturated zone upward
- into the unsaturated zone due to surface tension.
Is the subsequent movement of infiltrated water in the unsaturated zone; may involve exfiltration (Evaporation from the upper soil layer).
Is the movement of water from the soil surface into the soil.
variable intense heating of the ground surface and the air above it causes the warm air to rise, gets cooled, condenses, and precipitation occurs. They produce intense rainfall over small areas.
Cyclonic (frontal) storms:
movement of large air mass systems from high pressure regions to low pressure regions. Warm and cold air masses meet, warm or cold fronts form, lighter warm air rises, gets cooled, condenses, and precipitation occurs. Spatial extent could be over several hundred kilometers.
the mechanical lifting of moist horizontal air currents over natural barriers such as mountain ranges. Warm air rises, gets cooled, condenses, and precipitation occurs. They produce large amounts of rain and snow, often year-round in mountainous areas.
If you are given ONLY the current air temperature, you can estimate
Saturated vapour pressure
Which of the following statements is true (you may choose more than one if necessary)
(a) Dry warm air is lighter than dry cold air given that both have same pressure
(b) Moist air is lighter than dry air at the same temperature andpressure.
(c)At the same temperature and pressure, moist air will tend to go above the dry air
(d) Blowing air tends to increase evaporation rate.
all of the above
Estimation of Evaporation rate is important in hydrology for
Estimation of water loss in reservoirs
If you know now the dew point temperature (not the current temperature), can this be a good indication of:
Vapour pressure now
- Are a combination of geographical, geological, and meteorological conditions
- Are likely to have streams that exhibit similar storm- and annual-hydrographs
- May include multiple watersheds
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