The image below demonstrates:
Seismograph stations
B-Berkeley
D-Denver
NY N New York
United States
Greenland
Compass
the technique of locating the epicenter of an earthquake, which in this case is in
Mexico
the technique of locating the focus of an earthquake, which in this case is in
Mexico
4
the technique of locating the epicenter of an earthquake, which in this case is in
Denver, CO
the technique of locating the focus of an earthquake, which in this case is in
Denver, CO