12-hydrology - Landform Geography Hydrology Lecture 12 23...

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Unformatted text preview: Landform Geography: Hydrology Lecture 12: 23 February Lecture outline: 1. Introduction: special characteristics of water 2. Hydrologic Cycle: movement between air-ocean-surface 3. Water Balance Thursday: Finish Hydrology and Karst (Chapter 17) People and the Environment – Oceans Becoming More Acidic (p. 266) ; Thawing Permafrost in Alaska (p. 272); Subsidence from Groundwater Extraction (p. 284) Focus – The Aral Sea and Lake Chad (p. 276) Introduction Underground Water Oceans Permanent Ice Surface Water Ground Water Introduction: Hydrologic Figure Introduction • Three phases – Liquid • High surface tension (‘sticky’) • Universal solvent (attracted to other polar chemicals) – Gas (water vapor) – Solid (ice) Figure Exchange of latent (“hidden”) heat energy Evaporation – storage of latent heat – cooling effect Condensation – release of latent heat – warming effect Introduction These percentages are relatively constant. One major exception is…? This is critical to the hydrologic cycle Figure Series of storage areas Hydrologic Cycle Figure Series of storage areas Hydrologic Cycle Figure FYI: Advection – horizontal air movement Hydrologic Cycle Evaporation dominates • 86% from oceans • 14% from land surfaces A lot of water around equator – High potential for evaporation Hydrologic Cycle Evaporation dominates • 86% from oceans • 14% from land surfaces – Evaporation + Transpiration (def. vegetation to atmosphere transfer) –...
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This note was uploaded on 02/17/2011 for the course GEOL 201 taught by Professor Baruah during the Spring '10 term at South Carolina.

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12-hydrology - Landform Geography Hydrology Lecture 12 23...

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