Chapter 4.2B, Problem 2A

Use Figure 4.6 and a drafting compass to draw a circle around each of the three stations. Make the radius (in miles) of each circle equal to the station's distance from the epicenter as determined above. (Use the scale on the map to set the radius on the drafting compass). The Circles you draw should intersect at approximately one point. This point is the epicenter. If they do not intersect at one point, find a point that is equidistant from the edges of the three circles and use this as the epicenter. Label the epicenter on the map.

Figure 4.6 Map for locating an earthquake epicenter.