GG101 Lecture Notes - Soil Texture, Field Capacity, Surface Tension
Document Summary
What is responsible for the ongoing climate change: climate change is influenced by human activities and natural processes (e. g. solar variations, volcanic eruptions, ocean heat exchange) No global agenda on addressing this problem. Hydrologic cycle, soil moisture (pages 234 - 246 in textbook: introduction. Hydrology: study of the distribution of water in all its forms. Model showing the distribution and movement of water in the earth atmosphere system (fig 9. 1) Stores: oceans, ice sheets, groundwater, soil moisture, fresh surface, saline surface, atmosphere (% of each? figure 7. 3) Processes (linkages: evaporatranspiration, evaporation, condensation, advection lateral movement of warm moist air, precipitation, runoff. Series of processes where we move water from the land into the oceans: other, soil moisture. Porosity: proportion of a volume of soil (or sediment or rock) that is open space. Effective porosity: proportion of a soil (or sediment or rock) that consists of interconnected pores. How connected are the pores? large pores? texture and sorting of the material.
