Map of the United notes. Three circles centered at Portland, Salt Lake City, and Los Angeles. The circles converge at San Francisco.

Based on the seismograph measurements in the image, where is the epicenter of this earthquake?

Portland, OR
Salt Lake City, UT
San Francisco, CA
Los Angeles, CA

1 answer

Based on the description provided, the epicenter of the earthquake is most likely at San Francisco, CA. This is inferred from the information that the three circles centered at Portland, Salt Lake City, and Los Angeles converge at San Francisco. In seismic analysis, the point where circles (representing distances from each seismograph) intersect typically indicates the epicenter of the earthquake.