Tsunami Flashcards
a series of huge waves caused
by an earthquake that occurs
near or near the ocean.
Tsunami
- Japanese term that means
“harbor waves”- can be generated by underwater
volcanic eruptions and
landslides.
- can be generated by underwater
Tsunami
energy released from an earthquake
released from the focus
Seismic Waves
travels horizontally and vertically in different directions
P-waves, S-waves,L-waves, nad R-waves
Seismic Waves
waves that travel across Earth‘s interior
P-waves and S-waves
Body waves
The fastest kind of seismic wave, and, consequently, the first to “arrive” at a seismic station.
can move through solid rock and fluids, like water or the liquid layers of the earth.
P- waves
The second wave you feel in an earthquake.
is slower than a P wave and can only move through solid rock, not through any liquid medium.
S wave
The first kind of surface wave is called aLove wave, named after A.E.H. Love, a British mathematician who worked out the mathematical model for this kind of wave in 1911.
It’s the fastest surface wave and moves the ground from side-to-side.
L- waves
The other kind of surface wave is theRayleigh wave, named for John William Strutt, Lord Rayleigh, who mathematically predicted the existence of this kind of wave in 1885. A Rayleigh wave rolls along the ground just like a wave rolls across a lake or an ocean.
R- waves
PEIS
Philippine Earthquake Intensity Scale
RFIS
Rossi Forel Intensity scale
It measures how strong the shaking generated by the earthquake is at a particular location.
INTENSITY
It measures the amount of energy released at the source of an earthquake.
MAGNITUDE
An instrument that makes a record ofseismic wavescaused by anearthquake, explosion, or otherEarth-shaking phenomenon.
Seismograph
PHIVOLCS
Philippine Institute of Volcanology and Seismology
