GY 102 Lab Final - UA

contour line

A line on a topographic map that connects points of equal elevation

GPS

A system that determines the precise position of something on Earth through a series of satellites, tracking stations, and receivers.

Channel Geometries formula

Area and Width

Area formula

Depth X Width

GPS stands for

Global Positioning System

Infiltration rate

Inches of rainfall / hr

What are the soil horizons?

O, A, E, B, C, R

discharge formula

Q = Area x velocity

Total discharge formula

Q = Q1+Q2

recurrence interval calculate

RI = (N + 1) / Rank

soil horizon

a layer of soil that has identifiable characteristics produced by chemical weathering and other soil-forming processes

5 soil forming factors

climate, organisms, relief, parent material, time

spatial scale

extent of an area at which a phenomenon or a process occurs

Temporal Scale

extent of the area or the duration of time

Smaller channel

faster speed

· Relationship between particle size and distance downstream

grain size decreases with increasing distance downstream

stage

height above the riverbed, in ft or m

flow continuity

presence of a complete path for current flow

Larger channel

slower speed

recurrence interval

the average length of time between floods of a given size along a particular stream

contour interval

the difference in elevation from one contour line to the next

topographic profile

the drawing of the elevation changes along a line separating two points on a map

flood probability calculation

the percent chance the flood will happen in any given year

Infiltration

the process by which water on the ground surface enters the soil

Discharge

volume of water / time, in cfs or m3/s

Runoff

water that flows over the ground surface rather than soaking into the ground

Total amount of water

water will not change

particle size varies (small to large)

· clay, silt, sand, pebbles