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Cc606 – hydrology cycle

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Raihana Ismail
Raihana Ismail

The document discusses the hydrology cycle, which describes the continuous movement of water on, above, and below the Earth's surface. It involves six main processes: 1) Evaporation of water into vapor from surfaces, 2) Transpiration of water vapor from plants, 3) Condensation of vapor into liquid water clouds, 4) Precipitation as rain, snow, or hail falls to Earth, 5) Runoff of water over the land or infiltration into soils and rocks below ground, and 6) Storage of water in oceans, lakes, soils, and atmosphere in a never-ending cycle of continuous movement.

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N A M E : S I T I R A I H A N A B I N T I I S M A I L M A T R I X N O . : 0 1 D K A 1 2 F 2 0 3 8 L E C T U R E R : P N . S A R I P A H B T N O R Cc606 – HYDROLOGY Hydrology Cycle
Introduction HYDROLOGY CYCLE: - Called the water cycle. - Vertical and horizontal movement of water (vapor, liquid, or solid between the earth’s surface, subsurface, atmosphere, and oceans).
Component of Hydrology cycle •All streams flow into the sea, yet the sea is never full. •To the place the streams come from, there they return again
1) Evaporation The process by which liquid water is transformed into a gaseous state Evaporation into a gas ceases when the gas reaches saturation Energy breaks bonds that hold molecules together
CONT……. Net evaporation occurs when the rate of evaporation exceeds the rate of condensation Removes heat from the environment:Net Cooling Primary mechanism for surface-to-atmosphere water transport
Cc606 – hydrology cycle
2) Transpiration Discharge of water vapor from the leaves of plants into the atmosphere ‘Evapotranspiration’ = when there is also evaporation of moisture from the soil, together with that from the leaves of the plants
Cc606 – hydrology cycle
3) Condensation Gas turns into liquid state. Cloud formation stage. Cool temperatures are essential for condensation to happen (it can hold the water vapor and delay condensation, if the temperature high)
Cc606 – hydrology cycle
4) Percipitation The vapor that accumulates or freezes on condensation nuclei is acted on by gravity and falls to Earth’s surface. (rain, freezing rain, sleet, snow, or hail) Primary connection in the water cycle that provides for the delivery of atmospheric water to the Earth
Cc606 – hydrology cycle
5) Run off Water (from rain, snowmelt, or other sources) flows over the land surface. Runoff that occurs on surfaces before reaching a channel is also called overland flow.
Cc606 – hydrology cycle
6) Infiltration Process by which precipitation into subsurface soils and moves into rocks through cracks and pore spaces.
Cc606 – hydrology cycle
The Accounting Budget Inflow (I) – Outflow (O) = ± Change in storage (S) or I - O = ± ∆S *Also called the continuity/ equation/ conservation of mass.
STORAGE (S) OUTPUT (O)INPUT (I)
Summary Continuous cycle where water evaporates, travels into the air and becomes part of a cloud, falls down to earth as precipitation, and then evaporates again. This repeats again and again in a never- ending cycle.

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Cc606 – hydrology cycle

  • 1. N A M E : S I T I R A I H A N A B I N T I I S M A I L M A T R I X N O . : 0 1 D K A 1 2 F 2 0 3 8 L E C T U R E R : P N . S A R I P A H B T N O R Cc606 – HYDROLOGY Hydrology Cycle
  • 2. Introduction HYDROLOGY CYCLE: - Called the water cycle. - Vertical and horizontal movement of water (vapor, liquid, or solid between the earth’s surface, subsurface, atmosphere, and oceans).
  • 3. Component of Hydrology cycle •All streams flow into the sea, yet the sea is never full. •To the place the streams come from, there they return again
  • 4. 1) Evaporation The process by which liquid water is transformed into a gaseous state Evaporation into a gas ceases when the gas reaches saturation Energy breaks bonds that hold molecules together
  • 5. CONT……. Net evaporation occurs when the rate of evaporation exceeds the rate of condensation Removes heat from the environment:Net Cooling Primary mechanism for surface-to-atmosphere water transport
  • 7. 2) Transpiration Discharge of water vapor from the leaves of plants into the atmosphere ‘Evapotranspiration’ = when there is also evaporation of moisture from the soil, together with that from the leaves of the plants
  • 9. 3) Condensation Gas turns into liquid state. Cloud formation stage. Cool temperatures are essential for condensation to happen (it can hold the water vapor and delay condensation, if the temperature high)
  • 11. 4) Percipitation The vapor that accumulates or freezes on condensation nuclei is acted on by gravity and falls to Earth’s surface. (rain, freezing rain, sleet, snow, or hail) Primary connection in the water cycle that provides for the delivery of atmospheric water to the Earth
  • 13. 5) Run off Water (from rain, snowmelt, or other sources) flows over the land surface. Runoff that occurs on surfaces before reaching a channel is also called overland flow.
  • 15. 6) Infiltration Process by which precipitation into subsurface soils and moves into rocks through cracks and pore spaces.
  • 17. The Accounting Budget Inflow (I) – Outflow (O) = ± Change in storage (S) or I - O = ± ∆S *Also called the continuity/ equation/ conservation of mass.
  • 19. Summary Continuous cycle where water evaporates, travels into the air and becomes part of a cloud, falls down to earth as precipitation, and then evaporates again. This repeats again and again in a never- ending cycle.