11.3 A seismograph recording from the 1978 Magnitude 7.4 earthquake in Tabas, Iran, is shown below. Different wave patterns are observed in this seismograph. Acceleration (g) 0.5 0 10 20 30 1 40 Time (seconds) a) Which parts of the seismogram represent P-wave and S-wave? b) Which wave (P-wave or S-wave) arrived first? c) Which wave (P-wave or S-wave) caused the strongest shaking? d) What was the approximate peak (maximum) ground acceleration? e) What was the total recording duration in this seismograph? f) What is the approximate duration of the strongest around shaking?
11.3 A seismograph recording from the 1978 Magnitude 7.4 earthquake in Tabas, Iran, is shown below. Different wave patterns are observed in this seismograph. Acceleration (g) 0.5 0 10 20 30 1 40 Time (seconds) a) Which parts of the seismogram represent P-wave and S-wave? b) Which wave (P-wave or S-wave) arrived first? c) Which wave (P-wave or S-wave) caused the strongest shaking? d) What was the approximate peak (maximum) ground acceleration? e) What was the total recording duration in this seismograph? f) What is the approximate duration of the strongest around shaking?
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Transcribed Image Text:11.3 A seismograph recording from the 1978 Magnitude 7.4 earthquake in Tabas, Iran, is shown below.
Different wave patterns are observed in this seismograph.
Acceleration (g)
0.5
D'D
-0.5
0
10
20
30
40
Time (seconds)
a) Which parts of the seismogram represent P-wave and S-wave?
b) Which wave (P-wave or S-wave) arrived first?
c) Which wave (P-wave or S-wave) caused the strongest shaking?
d) What was the approximate peak (maximum) ground acceleration?
e) What was the total recording duration in this seismograph?
f) What is the approximate duration of the strongest ground shaking?
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