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Epicenter: Answers

1. d_p =6t_p; d_s =3.5t_s

1. t_p = d_p /6; ts = d_s /3.5
2.  
3. Difference in arrival times for P- and S-waves
4. 

3. A & B

   Station	Time Diff (U)	Dist to Epicenter (D)
   1. TUC	30	252
   2. ANMO	32	269
   3. GDL2	44	370
   4. LTX	70	588

4. See map shown
5. A and B. On the Google map printed from my computer, the distance across the southern border of New Mexico is 5.5 inches. So the scale is . Note: this may vary with printing from different computers.
6. A)       

   Station	Scaled Distance for Map
   1. TUC	2.45
   2. ANMO	2.62
   3. GDL2	3.6
   4. LTX	5.72

• B, C, D) Draw Circles with centers at Stations and radii shown in the table. Epicenter at 33.00N, 108.23W – just north of Silver City (See map)

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This material is based upon work supported by the National Science Foundation under Grant GEO-0355224. Any opinions, findings, and conclusions or recommendations expressed in this material are those of the authors and do not necessarily reflect the views of the National Science Foundation.