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Distance From Epicenter (km) How far was the seismic station from the epicenter of this earthquake?

Distance From Epicenter (km) How far was the seismic station from the epicenter of this earthquake?

Applications and Investigations in Earth Science (9th Edition)
Applications and Investigations in Earth Science (9th Edition)
9th Edition
ISBN:9780134746241
Author:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
Publisher:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
Chapter1: The Study Of Minerals
Section: Chapter Questions
Problem 1LR
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### Earthquake Seismology Exercise #### Seismogram Analysis The image displays a seismogram illustrating the seismic activity recorded during an earthquake. The x-axis represents local time in hours, minutes, and seconds (ranging from 7:14:00 to 7:16:00). The seismic waves are noticeable around 7:15:00, indicating earthquake activity. #### Graph Explanation: Time Difference vs. Distance from Epicenter Below the seismogram, a graph is presented titled "Time Difference vs. Distance from Epicenter." The x-axis shows the distance from the epicenter in kilometers (ranging from 0 to 500 km), while the y-axis shows the S-P time difference in seconds (ranging from 0 to 60 seconds). The graph is a straight line, showing a positive correlation between the S-P time difference and the distance from the epicenter. The greater the time difference, the further the distance from the epicenter. #### Question **How far was the seismic station from the epicenter of this earthquake?** Options: - ○ 300 km - ○ 225 km - ○ 175 km - ○ 50 km - ○ 140 km (Answer using the graph: Identify the S-P time difference from the seismogram, then locate this value on the y-axis of the graph and find the corresponding distance on the x-axis.)
Transcribed Image Text:### Earthquake Seismology Exercise #### Seismogram Analysis The image displays a seismogram illustrating the seismic activity recorded during an earthquake. The x-axis represents local time in hours, minutes, and seconds (ranging from 7:14:00 to 7:16:00). The seismic waves are noticeable around 7:15:00, indicating earthquake activity. #### Graph Explanation: Time Difference vs. Distance from Epicenter Below the seismogram, a graph is presented titled "Time Difference vs. Distance from Epicenter." The x-axis shows the distance from the epicenter in kilometers (ranging from 0 to 500 km), while the y-axis shows the S-P time difference in seconds (ranging from 0 to 60 seconds). The graph is a straight line, showing a positive correlation between the S-P time difference and the distance from the epicenter. The greater the time difference, the further the distance from the epicenter. #### Question **How far was the seismic station from the epicenter of this earthquake?** Options: - ○ 300 km - ○ 225 km - ○ 175 km - ○ 50 km - ○ 140 km (Answer using the graph: Identify the S-P time difference from the seismogram, then locate this value on the y-axis of the graph and find the corresponding distance on the x-axis.)
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