How does TRIANGULATION work to find the epicenter of an earthquake?
Dec 15, 2009
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4 comments
Andrew R on December 15, 2009 at 1:53 pm
TRIANGULATION means using three point sensors to identify the source of a subject matter. It could be a sound, motion or a fixed position on earth. These are done in identifying the source point of a cellphone or radio (used by the military and police) signal, earthquake and GPS (global positioning system that tells you to the nearest meter where you are on earth in longtitude and latitude or the specific square meter on earth. I have to qualify here that there must be three fixed orbiting sattelites within receiving distance to be able to provide your info).
I will agree with the first three answers that it will be difficult, at best, to describe how it is done. However, I shall attempt to explain it the best way I can.
Imagine you and two of your friends (could be more but it will make it redundant), standing at a distance from each other but at an angle (meaning not at a single line) playing hide and seek with an arbiter.
And the arbiter tells you that your subject is 45 degrees northeast. Then your other two partners are given similar clues. Using geometric formulas (I won’t bore you with them) and putting it on a chart, you will see the intersect or the point where all three lines will meet. Additional identifying points or sources can help increase the accuracy level. But usually three is enough.
vlee1415 on December 15, 2009 at 1:53 pm
the answer is in
http://nemo.sciencecourseware.org/VirtualEarthquake/VQuakeExecute.html
John on December 15, 2009 at 1:53 pm
well first you need detectors at different locations, then information from all those detectors lets you locate the position of where the tremors occurred. you wouldn’t be able to locate the center if you just used 1 or 2 detectors, u need at least 3.
Aniwat P on December 15, 2009 at 1:53 pm
its hard to explain go to howstuffworks.com it should help i would explain nut its just to much to type srry