Use a drafting compass to draw an arc centered on each recording station. Make the radius of each arc equal to the distance from the epicenter determined for the station in part B. (Use the scale on the map to set this radius on your drafting compass.) The circles you draw should intersect approximately at one point on the map. This point is the epicenter. (If the three circles do not quite intersect at a single point, then find a point that is equidistant from the three edges of the circles and use this as the epicenter.) Record your best estimate of the location of the earthquake epicenter: Latitude of epicenter: ____ °N Longitude of epicenter: ____ °W_____
Use a drafting compass to draw an arc centered on each recording station. Make the radius of each arc equal to the distance from the epicenter determined for the station in part B. (Use the scale on the map to set this radius on your drafting compass.) The circles you draw should intersect approximately at one point on the map. This point is the epicenter. (If the three circles do not quite intersect at a single point, then find a point that is equidistant from the three edges of the circles and use this as the epicenter.) Record your best estimate of the location of the earthquake epicenter:
Latitude of epicenter: ____ °N Longitude of epicenter: ____ °W_____
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