Name: ___________________________ Seismograph Stations Follow the link above to the interactive site. Read the instructions on the left side of the screen. Fill in the data table and answer the journal questions based on your observations. Station Difference Arrival Times (min and sec) Distance from Epicenter (in km) Which state was the earthquake’s epicenter located in? Why does the time difference between the arrival of the primary and secondary waves grow longer at seismograph stations that are farther away from the epicenter? How can the epicenter of an earthquake be accurately located?