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chap. 11 & 12

TermDefinition
the hydrologic cycle water evaporated from ocean , cooled water forms vapor and turns into clouds, circles earth and then turns to rain
runoff precipitation falls too rapidly to be absorbed
overland flow too much water to be absorbed into ground
sheet flow flows in sheets down hill slopes, shallow
channelized flow flow with path created by water movement
infiltration process by which water on the ground enters the soil
types of infiltration to soil water belt, to ground water
aquifer permeable (water can move through) rock or sediment
perched water table smaller water table sittig above main water table
aquiclude impermeable rock or sediment
karst dissolution of limestone
discharge volume of water/unit time
stage height of stream surface
stream gage measures stage and discharge
stream velocity- friction inc friction= dec velocity
stream velocity- slope inc slope = inc velocity
stream velocity- area dec area= inc velocity
drainage basin total area occupied by drainage system
drainage divide line following crest of upland seperating basins
hydrograph plots discharge over time
base flow peak water table
flood stage height/stage above where river floods
resevoir storage of water from water source
lakes and geologic time only temporary
salty lake landlocked with concentration of salts and other dissolved material higher than other lakes
fluvial geomorphology how landscapes change over time, the study of landforms created by running water
denudation lowering of landscape by water
erosional landform process of natural break down of rocks
depositional landfom formed by depositing of material
slope erosion - overland flow removes sediment from slope
slope erosion- splash erosion causes soil detachment and disinigration, erosional, soil bombarded wirh rain
sediment yield quantity of sediment removed
dec vegitiation= inc sediment yield
rill small channels in hill slope carved by flowing water
master rill water hooses rill and makes it larger over time
gully steep walled canyon like trench
stream erosion- hydrolic action force of flowing water removrd material
stream erosion- abrasion rock particles carried by river
stram erossion- corrosion chemical weathering dissolution
graded stream carries just right amount of sediment that ot recieves
waterfall eodes background over time
aggradation elevation of strem bed is risiing
degedation stream cutting down into sediments
entrenched meander stream degrades into befrockq
point bar depositional ladfor inside of meander
cut bank erosional landform on outsife of meander bend
cut off kocation on river where a meander was abandoned
oxbow lake left behind after cutoff crescent shaped lake
natural levee ridge of course sediments parrallels river on both sides
backswamp flat section of finer sediments
terrace former floodplain
eolian geomorphology wind erodes naterials
wind abrasion wind drives sand against surface
wind delfation wind picks up loos particles
angle of response= angle of stavility
alpine glacier descending mountian valley formed among summits
glacier formation accumulation of ice on land showing signs of past or present movement
cirque bowl shaped depression at head of glacier
glacial trough u shaped glacier valley evidence of former glaciers
hanging valley u shaped trintary valley when glacier recedes its left hanging above
striations series of ridges
zone of accumulation area above firn lne where snow accumulates and exceeds losses froma ablation
zone of ablation below firn line loss in ice mass due to melting
snowline elevation above where snow melts
rigid zone shallow
plastic zone slower movement at bottom and along valley walls
arete knife like ridge formed by enlargement of 2 troughs or cirques
horn pyramidal peak formed by enlargement if 3 or more cirques
tarn lake in cirque
col low point in arete
till unsorted unstratifies
moraine main landform composed of tills ridges etc
fjord long narrow inlet with steep sides or cliff createdd by glacial erosion
rouch moutenee rock formation created by passing of glacier causing abrasion
ice marginal lake lake located adjacent to glacier formed inn bedrock basin
outwash plain formed from glacial sediments
kame mound compased of sand gravel and til accumulates in retreating glaciers
kettle shallow sediment filled body of water formed by retreating glaciers
esker winding ridge of stratified land anfd gravel
drumlin elongated hills in shape of inverted spoon formed by glacial ice
Created by: 1738400229818217