Earthquake early-warning systems
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The initial warning that permits you to take evasive action

The network warning that extends the response time.

BE INFORMED, BE WARNED, BE PREPARED: BEFORE, DURING and AFTER an EARTHQUAKE

RICHTER SCALE

WHERE DO EARTHQUAKES OCCUR?

MEGATHRUST EARTHQUAKE?

WHAT ARE THE EFFECTS?

MINIMIZING THE RISK!

BEING PREPARED

EARTHQUAKES IN B.C.

WHAT CAUSES EARTHQUAKES

INTENSITY & MAGNITUDE

MERCALLI SCALE

Earthquakes in British Columbia

 

Richter
Scale # 		Earthquakes
globally per year 		Typical Intensity at center
(see Mercalli Scale) 		Acceleration.
% of gravity (g)
8.0 +  0.1 - 0.2  XII -
7.4 - 8.0  4  XI -
7.0 - 7.3 15  X 70
6.2 - 6.9  100 VIII - IX 15 - 32
5.5 - 6.1  500 VII 7
4.9 - 5.4 1,400 VI 3
4.3 - 4.8  4,800 IV-V 0.7-1.5
3.5 - 4.2 30,000  II - III  0.2 - 0.3
2.0 - 3.4 800,000  I - II 0.1 - 0.2

Copyright: Alex Makarow © 1998 - Revised April 11, 2000