http://earthquakequestions.com/how-do-geologist-locate-the-epicenter-of-an-earthquake.htm Everything You Want To Know About Earthquakes Sat, 04 Sep 2010 02:28:47 +0000 hourly 1 http://wordpress.org/?v=3.0.1 http://earthquakequestions.com/how-do-geologist-locate-the-epicenter-of-an-earthquake.htm/comment-page-1#comment-13677 charles s Fri, 12 Mar 2010 04:21:22 +0000 http://earthquakequestions.com/how-do-geologist-locate-the-epicenter-of-an-earthquake.htm#comment-13677 There are seismic stations located about the world and many in the US. The time it takes the seismic waves to arrive at various stations depends upon the makeup of the earth's crust at various locations. The speed of the seismic wave varies through different types of material but by knowing when the waves arrive at different locations, and the rock characteristics involved, the seismologists can calculate, by knowing how long it took the seismic wave to arrive at their station, approximately where the epicenter of the quake was located. In some cases the seismic wave bounces off layers like echoes and this type of think is known from other quakes so that they can pin-point the location very accurately and quickly. There are seismic stations located about the world and many in the US. The time it takes the seismic waves to arrive at various stations depends upon the makeup of the earth’s crust at various locations. The speed of the seismic wave varies through different types of material but by knowing when the waves arrive at different locations, and the rock characteristics involved, the seismologists can calculate, by knowing how long it took the seismic wave to arrive at their station, approximately where the epicenter of the quake was located. In some cases the seismic wave bounces off layers like echoes and this type of think is known from other quakes so that they can pin-point the location very accurately and quickly.

]]> http://earthquakequestions.com/how-do-geologist-locate-the-epicenter-of-an-earthquake.htm/comment-page-1#comment-13678 hannahbannah Fri, 12 Mar 2010 04:21:22 +0000 http://earthquakequestions.com/how-do-geologist-locate-the-epicenter-of-an-earthquake.htm#comment-13678 triangulation? triangulation?

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