2.locate and mark the p waves and S waves on the attached seismogram 3. Accurate
ID: 291752 • Letter: 2
Question
2.locate and mark the p waves and S waves on the attached seismogram 3. Accurately estimate the arrival times of the P- and S- waves and record in the table below 4. Subtract the arrival times of the p-waves and s-waves to find the lag time. 5. Use the time travel graph to determine the distance to the epicenter for each seismogram. This is done by measuring out on a piece of paper the lag time, then finding that distance that corresponds to that difference. 2. 3. 4. 5. Locate and mark the P-waves and S-waves on the attached seismogram. Accurately estimate the Subtract the arrival times of the P-wave and S-wave to find the Lag Time. Use arrival times of the P- and S-waves. and record in the table below. the travel-time graph to determine the distance to the epicenter for each seismogram. This is done by measuring out on a piece of paper the Lag Time, then finding that distance that corresponds to that difference (see graph).Explanation / Answer
2-First seismogram shows p- wave as it reaches first at seismic station before 20 sec it reaches at the station and started plotting and,the last seismogram shows the s-wave which reaches at the station in 20 sec.
3-the arrival times of the p wave is 11 sec at the station and for the s wave is 20 sec.
4-the lag time for for p and s wave is 9 sec(20-11=9).
5-the distance for p wave to the epicentre is 478 km and for s wave it is 200 km.
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