Term
|
Definition
| due to heavy prolonged rain or melting snow |
|
|
Term
| what are the 3 types of floods |
|
Definition
rising floods
flash floods
wind driven flood tides |
|
|
Term
|
Definition
| high intensity rainfall causes flooding within a short period of time (dams and levees break) |
|
|
Term
| the Galveston flood of 1900 |
|
Definition
the city was 9ft above sea level and the storm surge was 15 feet above sea level
6-1000 fatalities (drowned) |
|
|
Term
| factors that control flooding |
|
Definition
1.precipitation intensity and duration
2.saturation of the ground
3.type pf ground cover- influences runoff
4.abundance and type of vegetation-slows water down and allows it to soak into the ground |
|
|
Term
|
Definition
| statistical assessment that a given event has a 1% chance of occurring in any year. |
|
|
Term
| how does man effect flooding? |
|
Definition
1.urbanization- runoff is increased because of asphalt, rooftops...
2.man made levees
3. dams
4. channelization |
|
|
Term
|
Definition
|
|
Term
how does ground water move?
driven by?
moves from... |
|
Definition
through porosity in
pressure
high to low |
|
|
Term
|
Definition
| where ground water discharges at the surface |
|
|
Term
|
Definition
| drilled into confined aquifer with enough hydraulic pressure for the water to flow to the surface with out pumping. |
|
|
Term
|
Definition
|
|
Term
|
Definition
| evaporation-precipitation-return |
|
|
Term
|
Definition
| returns water to oceans on lands surface |
|
|
Term
|
Definition
| collection=dendritic pattern of smaller streams that feed water into the main trunk (branching) |
|
|
Term
|
Definition
|
|
Term
|
Definition
| dispersing system-river water flows into a standing body of water |
|
|
Term
| # of tributaries _________down stream |
|
Definition
|
|
Term
| stream gradient________down stream |
|
Definition
|
|
Term
| stream competence (grain size)_____down stream |
|
Definition
|
|
Term
| velocity_____________down stream |
|
Definition
|
|
Term
| discharge_________down stream |
|
Definition
|
|
Term
|
Definition
| velocity (feet/sec) X cross sectional area (width*height) |
|
|
Term
|
Definition
| land area drained by one river system |
|
|
Term
| 3 kinds stream transported sediment |
|
Definition
1suspended load- fine grained (clay or salt)
2dissolved load- atoms
3bed load-slide roll or bounce (coarse grained) |
|
|
Term
|
Definition
| area covered by water during flood |
|
|
Term
|
Definition
| twisting winding stream bends-migrate |
|
|
Term
|
Definition
| sand or gravel deposited on the inside of a meander bend |
|
|
Term
|
Definition
| steep walled part of the outside of a meander |
|
|
Term
|
Definition
| isolated meander loops-forms when streams cut through rocks |
|
|
Term
|
Definition
| semi circular deposit of coarse sediment formed where stream gradient changes |
|
|
Term
|
Definition
oligotrophic- poorly nourished; few plants; abundant in 02
Eutrophic- highly nourished; high Na and Phosphorous; Algae>decomposition> O2 |
|
|
Term
| how did the greeks determine the earths volume |
|
Definition
|
|
Term
|
Definition
| boundary between crust and mantle |
|
|
Term
|
Definition
|
|
Term
|
Definition
outer-slow p
-liquid
inner- rapid p
-solid |
|
|
Term
| how warm must water be for a hurricane to occur? |
|
Definition
|
|
Term
| what is tropical depression? |
|
Definition
| low pressure= hot air rises (less dense) |
|
|
Term
|
Definition
warm, moist air rises and water vapor condenses releasing latent heat (cools)
-heat=more buoyant (perpetuates storm) |
|
|
Term
|
Definition
surface winds flow towards low pressure
-Coriolis effect- deflects winds to the right in the N hemisphere; and left in the S hemisphere. |
|
|
Term
|
Definition
| the apparent deflection of objects from a straight path if the objects are viewed from a rotating frame of reference. |
|
|
Term
|
Definition
| The distance between the center of the eye and eyewall defines the radius of maximum wind for a tropical cyclone. |
|
|
