Tsunami Flashcards
tsunamis are caused by ______ of ______ in an ocean, sea, or lake
- displacement
- water
causes of tsunami
- meteor impacts
- earthquakes
- volcanic eruptions
- landslides/mass movements
- icebergs calving from glaciers
crest
highest point of a wave
trough
lowest point of a wave
wavelength
distance from crest to crest or trough to trough
wave height
vertical distance from crest to trough
amplitude (waves)
Height/2
period (wave)
= time for one wavelength to pass a point
frequency
number of waves per unit time
speed/celerity
wavelength/period
Water moves back &
up, thendown & forward, in a ______ motion
circular
_____ passes through the water, but there is no net ______ of the water
- energy
- movement
wave orbits are largest at the ______
surface
orbits disappear below _______
half a wavelength
as waves shoal (move into shallow water), characteristics ______
change
tsunamis are the common result of large _______-related earthquakes
subduction
______ fault motion transmits energy into the _____ _____
- vertical
- water column
submarine landslides cause water to become _____ in lakes or oceans
displaced
rockslides fall into the ocean from ______, causing _____ to form
- mountains
- waves
tsunami warning systems
- seismographs to detect earthquakes
- tidal guages to determine sea level changes
- buoy sensors
DART system
Deep Ocean Assessment and Reporting of Tsunami
