PPT-Review: overland water erosion

PROCESSES Generate runoff Saturation excess Infiltration excess INFLUENCES Hydraulic soil properties Conductivity Compactionuse history Ground cover interception Antecedent conditions Existing moisture. * Earth’s main agent of natural erosion. What is erosion?. Erosion is. -. Agents of Erosion. Agents of erosion include. . --. Running water . is the. . big. . Kahuna. . of. . all. . erosional. Weathering. The breakdown do the materials of Earth’s crust into smaller pieces.. Physical Weathering. Process by which rocks are broken down into smaller pieces by external conditions.. Types of Physical weathering. https://youtu.be/3TgQ06Z3q0I. Runoff. Saturation-excess runoff when water table meets the ground surface. Infiltration-excess runoff when precipitation rate exceeds infiltration rate. Horton’s conceptual hillslope model. HMS. (Preliminary). March 24, 2014. Rosa Aguilar. Computational Hydraulics and Hydrology. www.mahometaquiferconsortium.org. Surface Runoff. Water flow that occurs when the soil is infiltrated to full capacity and excess water from rain, . John Hewlett. from Hewlett:. Simultaneous recognition on 3 continents of a Variable Source Area. à la Hewlett-san and Hibbert-san (1967). Runoff Pathways. Slide from Mike Kirkby, University of Leeds, AGU Chapman Conference on Hillslope Hydrology, October 2001. The . surface. features of the Earth change as a result of observable physical and chemical processes . Weathering and Erosion. This is a monument . called Cleopatra’s . Needle. It was carved in Egypt around 1450B.C. The sides are carved with hieroglyphs, the writing of ancient Egypt. It stood in the dry, hot Egyptian desert for over 3000 years. During that time, the hieroglyphs remained distinct.. Water Erosion. How Does Moving Water Cause Erosion?. Erosion by water begins with a splash of rain.. Some rainfall sinks into the ground.. Some evaporates or is taken up by plants.. The rest of the water runs off over the land surface.. (ETSS 2.0). Pre-Implementation Briefing. College Park, MD. May 14, 2015. Arthur Taylor, . Huiqing. Liu and Ryan Schuster. MDL/NWS/NOAA. E. xtra . T. ropical . S. torm . S. urge . (. ETSS). Predicts . Contrast. the features left from different types of erosion.. Analyze. the impact of living and nonliving things on the processes of weathering and erosion.. Erosion and Deposition. Section 7.2. gravity: . another.. 2 . kinds:. 1) . Rill erosion. is the erosion by running water in small channels. , on the side of a slope.. 2) . Gully erosion. is when a rill channel evolves to become deep and wide.. Overview. Belt conveyors used to haul commodities over long . distances. Efficient for consistent movement of large volumes of material . Commodities. Large volumes of material. Bulk material. Iron ore . Runoff meander Rill oxbow lake turbulence. Gully alluvial fan ice age. Stream delta River. groundwater Tributary sand dune. Drainage basin Divide abrasion Flood plain beach. deflation. Runoff meander . Rill. oxbow lake turbulence. Gully alluvial fan ice age. Stream delta . River. groundwater. . Tributary. sand dune. Drainage basin . Divide. . abrasion. . Flood . WHAT IS COASTAL EROSION? Coastal erosion is the endless reshaping of shorelines by waves, currents, tides, storms, ice, rain and groundwater seepage. Human activities, like construction, dredging, CO