HW_15 Second Warning

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School

Temple University *

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Course

0836

Subject

Chemistry

Date

Dec 6, 2023

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docx

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Uploaded by LieutenantIbis2267

EES 0836 15... 14… 13……………….. Earthquake! Disasters: Geology vs. Hollywood Introduction In this week's reaction video, Jonathan Nyquist, PhD, watched a clip from the 2015 movie “San Andreas” where he spoke about predicting earthquakes and why it wouldn’t be possible in the Hoover Dam. For the most part, short-term predictions have eluded us. But keeping the public safe is a goal for government officials. At the moment,the best we can do is to use early alert systems such as the one used in Japan. The alert system that J apan has instituted is based on the fact that P-waves arrive and are recorded by seismographs before the more damaging S-waves and surface waves arrive. Once the waves are recorded, the system sends out an alert to people in the area. While it’s a useful system, your distance from the epicenter affects your personal response time. Learning Objectives ● Evaluate how different types of waves can propagate through different materials. (1, 4, 5, c, d) ● Analyze how people’s perception of shaking leads to the generation of shake maps. (1, 4, c, d) Part 1: What could you do in 15 seconds? To answer this question, we are going to conduct a class experiment. Your phone will play the role of the Japanese warning device. Exchange your number with someone in this class, or if you are uncomfortable with that, solicit the help of another friend or family member. The caller is to send you a text message at a time of their choosing, informing you that you have 15 seconds before a major earthquake will strike. If your phone was off at the time, simply take it from the moment you actually receive the message . Questions: 1. When (day and time) did you receive the warning? I told my roommate Tuesday morning, and she texted me Wednesday afternoon around 4pm. 2. What were you doing at the time? I was at my desk at work. 3. What course of action did you take, or would you have taken, if this had been a real emergency? Describe this in detail. If this were a real emergency, I would take cover under my desk at work to protect myself from hitting my head or try to get down the building as soon as possible since I work on the 13 th floor. 4. Do you think the warning would have improved your prospects in a real earthquake? Why or why not? Yes it would because give me some time to prepare myself before hit actually hits.

EES 0836 5. Would you have been able to help anyone else? Yes, I would have been able to help anyone I work with. 6. If you lived in an area prone to major earthquakes, would you subscribe to an earthquake alert service, and if so, what if you had to pay for it? How much would you be willing to pay per month? No I would not subscribe to an alert service. Earthquakes are very unpredictable and can occur whenever so the app would need to know in advance that an earthquake will occur and send a notification before it strikes. It runs the risk of getting a notification too late or not at all. Part 2 : Reaction video reaction In this week’s reaction video with Dr. Jon Nyquist, he watched a clip from the movie San Andreas (2015) where they depicted geophysicists accurately predicting earthquakes using magnets (more specifically, magnetometers). As we discussed in class, short term forecasting for earthquakes has, so far, eluded us. For the sake of argument, let’s say some new technology was created that was able to accurately forecast an earthquake within the hour. If you were alerted to a high magnitude event within the next hour, how would you prepare yourself, family, and property for this event? Write a short response (1-2 paragraphs) that addresses the above questions and your rationale for your choices/decisions. I would prepare myself and family for the worst-case scenario with an earthquake. Which means stocking up on water and food that does not require electricity to make. In an addition we would also have plan in place in case an earthquake occurs like where to take shelter and what objects on the property needs to be secured. There is not a lot of preparation you can do for your property before an earthquake because it is lying on top of the earth’s foundation. All you can do is make sure your property is up to codes and standards in future attempts to lessen the damage done on the property’s foundation.

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