Associate Level Material
Appendix D

Week Three Lab Report: Earthquakes

Answer the lab questions for this week and summarize the lab experience using this form.

Carefully read Ch. 9 of Geoscience Laboratory.

Complete this week’s lab by filling in your responses to the questions from Geoscience Laboratory. Select answers are provided for you in red font to assist you with your lab work. Although you are only required to respond to the questions in this worksheet, you are encouraged to answer others from the text on your own.

Questions and charts are from Geoscience Laboratory, 5th ed. (p. 155–167), by T. Freeman, 2009, New York, NY: John Wiley & Sons. Reprinted with permission.

Lab Questions

Judging from the seismogram
Follow the steps 1 through 4 to complete the table below (refer to and complete Appendix D, reproduced from Geoscience Laboratory, Ch. 9).

| |P arrival time |S arrival time |Difference in P & S |Distance |
| |hours: minutes: seconds tenths of seconds |seconds |kilometers |
|LTN |3:46:45.7 |3:46:50.0 |4.3 |35.6 |
|GOIL |03:46:00.90 |3:47:17.2 |16.3 |137 |
|POW |3:47:3:0 |03:47:20.80 |17.8 |149 |

Latitude Answer: 36.3º Longitude Answer 90.1

One of the curious things about the loss of life in regions surrounding the Bay of Bengal is that some 38,195 lives were lost in Sri Lanka, whereas only 2 lives were lost in Bangladesh. How could this be? It certainly could not be the difference in distance. Hint: To answer this question, you should first contour the map in Figure 9.20 (see p. 170 in the lab book) and then follow ‘the rule.’
The depth of the water around Bangladesh held at 500 meters and the water depth around SRI LANKA -2350 causing the run-up to higher with more destruction.

Note: You do not need to submit the contour map with this report.

Lab Summary

Address the following in