GEO 101 Chapter Notes - Chapter 19: Deflation, Wave-Cut Platform, Wavelength
13 Nov 2017
School
Department
Course
Professor
Document Summary
Landforms mad by waves and wind: the work of waves, tidal currents, types of coastline, wind action, dunes and loess. Wave refraction: close to coast, water gets more shallow, waves are slowed down. If waves arrive at an angle, one part is slower than the rest: causes waves to bend = wave refraction, waves arriving at bays are slow (deposition, at headlands, faster (erosion) Littoral/longshore drift: longshore drift/longshore current: sand is moved along the beach, waves arrive at a coast at an angle (swash, backwash returns at 90 degrees. Coastal deposition: result of longshore drift + a lot of sediment produces extensions of deposit from the shoreline, baymouth bar: may grow across a bay, tombolo: may link an island to the main land, spit: curved extension. Tides: daily changes in sea levels, flood: tides rise (high tide, ebb: tides fall (low tide)
