GLG 101 Study Guide - Midterm Guide: Triple Des, Glacier Morphology, Barchan
Document Summary
Nature of the water table including: zone of aeration (above water table) and zone of saturation (below water table), how water moves underground (fig. Permeability (capacity of a rock to transmit fluid), Aquifer (body of saturated rock or sediment), Aquitard (impermeable layers that hinder water movement) Gaining streams (wetter climates) vs. losing streams (dryer climates) Artesian wells wells that flow under pressure - usually very clean water. Pumping wells cone of depression, subsidence occurs with over pumping. Karst topography: sinkholes, solution valleys, sinking streams (disappearing) Hot springs, geysers located in western u. s. characterized by deposits formed from superheated water. Chapter 19 deserts and wind: where deserts occur: subtropics, rainshadows, great distance from ocean, cold marine winds blow on land, rainshadow sketch and examples of where it occurs (sierra nevada. Barchan - crescent, limited sand supply, constant wind direction. Transverse - sand seas, large sand supply, constant wind direction. Barchanoid - transition between barchan and transverse.
