What is the origin time of the earthquake according to each of the following stations?  SSPA: WCI: WVT: 3) At what time did the Love waves start to arrive at SSPA?

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
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What is the origin time of the
earthquake according to each of the following stations? 
SSPA:
WCI:
WVT:
3) At what time did the Love waves start to arrive at SSPA? 
 

 

Figure 11.5 Travel-time curves.
A O
15
Time since the earthquake occurred (minutes)
10
0
0
1000
2000
Surface-wave first arrivals
S-wave first arrival
P-wave first arrival
3000
1000
2000
Great-circle distance between the epicenter
and the seismograph (kilometers)
5
Dashed rectangle is the area of the
travel-time graph B (right)
B
200
Time since the earthquake occurred (seconds)
150
50
4000
4000
15
10
GRAPHS OF
SEISMIC WAVE
TRAVEL TIME
VS.
DISTANCE
S-wave first arrival
S-time
P-wave first arrivál
600
800
200 400
Great-circle distance between the epicenter
and the seismograph (kilometers)
1000
A. Travel-time curves for P-, S-, and surface waves with a set of traces from 17
different seismographs at various distances from the epicenter of the magnitude-
7.1 Ayutla-Puebla earthquake of September 19, 2017. The seismograms illustrate
how the curves can be derived using empirical data. B. Travel-time curves for use
within ~1000 km of an epicenter. This graph is used in Activity 11.3. Notice that
an S-minus-P time of 70 seconds corresponds to a distance to the epicenter of
approximately 667 km.
Transcribed Image Text:Figure 11.5 Travel-time curves. A O 15 Time since the earthquake occurred (minutes) 10 0 0 1000 2000 Surface-wave first arrivals S-wave first arrival P-wave first arrival 3000 1000 2000 Great-circle distance between the epicenter and the seismograph (kilometers) 5 Dashed rectangle is the area of the travel-time graph B (right) B 200 Time since the earthquake occurred (seconds) 150 50 4000 4000 15 10 GRAPHS OF SEISMIC WAVE TRAVEL TIME VS. DISTANCE S-wave first arrival S-time P-wave first arrivál 600 800 200 400 Great-circle distance between the epicenter and the seismograph (kilometers) 1000 A. Travel-time curves for P-, S-, and surface waves with a set of traces from 17 different seismographs at various distances from the epicenter of the magnitude- 7.1 Ayutla-Puebla earthquake of September 19, 2017. The seismograms illustrate how the curves can be derived using empirical data. B. Travel-time curves for use within ~1000 km of an epicenter. This graph is used in Activity 11.3. Notice that an S-minus-P time of 70 seconds corresponds to a distance to the epicenter of approximately 667 km.
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