Lab 8 -A- Earthquakes- 3-2023-1

Name: --------------------------------------------- Date: ---------------- Lab # 8- Earthquakes In-class lab exercises Part 1: Epicenter and Magnitude During this exercise you will calculate the epicenter location and magnitude of an earthquake, using software on the Internet. Go to http://www.sciencecourseware.org/VirtualEarthquake/VQuakeExecute.html Read the text about earthquakes, and then select the San Francisco area . Follow the instructions on your screen, and whenever you enter a number on the computer, you should record it below. Don’t forget to include units ! San Francisco Area Seismic station S-P interval Seismic station S-P interval Seismic station S-P interval Seismic station Epicentral distance Seismic station Epicentral distance Seismic station Epicentral distance If you didn’t find the epicenter, go back and try again. Then continue following the instructions to find the magnitude. Seismic station S wave amplitude Seismic station S wave amplitude Seismic station S wave amplitude Estimate the magnitude from the nomogram 1 Jessica start 10130 Each line a seconds - Eureka 50se -1140 -2 Se las vejas 64 seC Eureka 490 kin EKG 700am Las Vegas 620 m Eureka 280 num ElkO 50 mm Las ver 9S 100 mi 7 . 1

Southern California Seismic station S-P interval Seismic station S-P interval Seismic station S-P interval Seismic station Epicentral distance Seismic station Epicentral distance Seismic station Epicentral distance If you didn’t find the epicenter, go back and try again. Then continue following the instructions to find the magnitude. Seismic station S wave amplitude Seismic station S wave amplitude Seismic station S wave amplitude Estimate the magnitude from the nomogram Japan region Seismic station S-P interval Seismic station S-P interval Seismic station S-P interval Seismic station Epicentral distance Seismic station Epicentral distance Seismic station Epicentral distance If you didn’t find the epicenter, go back and try again. 2 Fresno 3 seconds Las Vegas 3G Seconds Pheonix 6) Seconds Fresno 340km Las vejas 380km Pheonix 600km fres 350mm No Las Vegas 249 mm Pheonix 50 mm 6 . 7 Pusan 50 sec +Ok Akit 12 Pusan 490km Toky O 100 14m Akita 620 14m

Then continue following the instructions to find the magnitude. Seismic station S wave amplitude Seismic station S wave amplitude Seismic station S wave amplitude Estimate the magnitude from the nomogram Make sure to submit your certificate of completion for all locations to gain credit for this lab. 3 -> - Amplitude S-P In Epicenter Mexica 619km 10 am chichrahra 65 sec ⊥ 201m 50mm Mazatlan 43 SeL 590km 15 mm Rosarito 60sec Magnitude = 6 . 2