MQ_San Andreas

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Temple University *

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0836

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Chemistry

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Jan 9, 2024

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EES 0836 San Andreas Movie Questions Disasters: Geology vs. Hollywood Introduction In the aftermath of a massive earthquake in California, a rescue-chopper pilot makes a dangerous journey with his ex-wife across the state in order to rescue his daughter. - imdb.com Learning Objectives ● Critically assess the portrayal of science, earthquake behavior, and emergency response along the San Andreas fault system in the movie San Andreas (2015). (4, 5, a) Part 1: Watch the movie As you are watching the video clips, look for the answers to the following questions. 1. It’s unclear if an earthquake caused the landslide in the opening scene, but in real life, can earthquakes cause mass wasting events? How can this happen? Yes, earthquakes cause shaking of the ground, and if there is natural instability of the rocks, then it can cause the ground to become unstable and start to slide. Earthquakes can cause landslides. 2. Is Dr. Hayes’s prediction about the “next big one” different from how earthquakes are predicted today? We do not have a systematic way of predicting earthquakes, and we are only able to monitor and use some rudimentary probabilities. The magnetic predictions are completely sci-fi as earthquakes do not affect magnetic fields and Hayes statements about being overdue does not mean much in the sense of prediction. 3. If you “discovered” that there are active fault lines in Nevada, does it seem plausible that you would be able to use them to help you predict earthquakes? What is the likely reason why they are recording earthquakes in this area? (Feel free to review lecture notes.) No, this area is unconnected to the San Andreas fault. And the movement of the Pacific plate and North American plate. Any faults in this area are likely ancient or remnant faults—points of weakness that occasionally slip. 4. Is evacuating a building the best course of action during an earthquake? If not, what is? No, but it depends. Taking cover under something sturdy is usually the best—like under a desk or doorway

EES 0836 5. Whoa, that’s a lot of destruction! You can clearly see seismic waves propagating across the landscape. What type of wave do you think this is? Explain your reasoning. Surface waves/Rayleigh waves—there is up and down motion on the surface 6. Dr. Hayes explains on the news that San Francisco will “get hit again, with a 9.5M event or higher. It will be so big that people on the east coast will feel it.” What is wrong with this statement? It is unlikely that the effects could be felt on the east coast—even at that magnitude. Energy dissipates as it travels, and the effects of the earthquake would be mostly localized 7. The Rock and his wife are warned that the road is out ahead. They come to a place where the earth has been displaced. There are two types of faults here. Name one of them and explain your reasoning. ( If you can name them both, that would be awesome! ) Transform fault; you can see that there is horizontal/lateral motion by the fact that the road they are driving on has been displaced laterally to the left on the other side of the fault. You could also say that this is a divergent/normal fault based on the separation of the two sides, leaving a gap in between. 8. How does the Rock know that a tsunami is coming? What is this part of the wave actually called? He sees the water being drawn out of the harbor; this part of the wave is actually called the drawdown or the trough 9. What is wrong with how the tsunami wave is depicted? Tsunamis are more like surges of water than one giant wave that crests and crashes onto the shore. 10. Why would you NOT see a local tsunami occur in the San Francisco area? To create a tsunami from an earthquake you need 2 things: the earthquake occurs underwater, and the fault occurs vertically. The San Andreas fault, however, is 90% on land and mainly horizontal. 11. As the parents are looking for their daughter, the water is no longer moving inland. Should our heroes be concerned about anything else? Why/why not? Yes. A tsunami is not just one surge of water; it is multiple surges of water coming onto the shore, drawing back, and then surging onto the shore again. Additionally, our heroes should be aware of debris and structural hazards from the city being destroyed around them.

EES 0836 12. The aerial shot at the end?!?! Really again with this misconception? What happened? Why is this not valid? The San Andreas fault is a lateral fault; this shot makes it look like part of California has been pulled away from the mainland United States, but this wouldn’t happen with lateral motion. This is bad, and now I’m upset, and also pretty angry.

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