Tsunami Discussion Questions: GLG 110 Chapter 4 Insights

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2/17/24, 9:17 PM Chapter 4 & Lecture Set 4: Discussion Questions (Tsunami): GLG 110: Dangerous World (2024 Spring - A) https://canvas.asu.edu/courses/179803/quizzes/1350990?module_item_id=12883050 1/8 Chapter 4 & Lecture Set 4: Discussion Questions (Tsunami) Due Jan 21 at 11:59pm Points 7 Questions 5 Available until Jan 22 at 11:59pm Time Limit None Allowed Attempts Unlimited Instructions This quiz was locked Jan 22 at 11:59pm.  Correct answers are no longer available. Score for this attempt: 7 out of 7 Submitted Jan 21 at 11pm This attempt took 42 minutes.  Overview You have unlimited attempts to complete this assignment. There is no time limit on those individual attempts. First view Lecture Set 4 and read Chapter 4 in your textbook. These exercises are designed to make you think more broadly about the material, and many questions have no right or wrong answer. For these reasons, one attempt will typically be adequate. Instructions Click “Take the Quiz” button to begin. Each question has its own set of instructions. Read carefully. Click “Submit” when finished. How you'll be graded The assignment will be graded based on percent completed, not necessarily on correct responses, as many questions have no right or wrong answer. Please review any feedback that you receive after the assignment is completed in order to get the most from these Discussions. We will check these manually after-the-fact; you will receive zero points for any blank answers.

2/17/24, 9:17 PM Chapter 4 & Lecture Set 4: Discussion Questions (Tsunami): GLG 110: Dangerous World (2024 Spring - A) https://canvas.asu.edu/courses/179803/quizzes/1350990?module_item_id=12883050 2/8 Question 1 Not yet graded / 1 pts Your Answer:  Question 2 0 / 2 pts Rewatch this simulation of the 26 December 2004 Indian Ocean tsunami. Tsunami Forecast Model Animation: Sumatra 2004 Tsunami Forecast Model Animation: Sumatra 2004 What countries have the highest simulated tsunami wave amplitude? What are the amplitudes according to the color scale on the left? You may want to open Google Maps for reference in another window. The countries that have the highest simulated amplitude in no particular order are Indonesia, Thailand, Malaysia, Myanmar, Bangladesh, and India. The amplitudes that are sorted by color determine if there was a tsunami the places that are red have a high chance of a to the maximum height or size of the waves within the tsunami that will hit them if one occurred. all of them are stored by color going from red meaning dangerous, yellow semi dangerous which is still bad, green which is more doable, and blue being calm. that's How I interpreted it. You may want to open Google Maps for reference in another window. You may also want to change the playback speed under Youtube settings (gear at bottom right of screen) to make these estimates. Approximately how long after the earthquake did the wave to reach northern Sumatra (Aceh, Indonesia) ? 5 minutes approxim

2/17/24, 9:17 PM Chapter 4 & Lecture Set 4: Discussion Questions (Tsunami): GLG 110: Dangerous World (2024 Spring - A) https://canvas.asu.edu/courses/179803/quizzes/1350990?module_item_id=12883050 3/8 Answer 1: You Answered 5 minutes approximately Answer 2: You Answered 40 minutes Answer 3: You Answered 7 hours 30 minutes Answer 4: You Answered 3 hours Answer 5: You Answered 7 hours and 40 mins I had to replay the video several times to estimate that the wave reached Aceh in less than 5 minutes! The waves seemed to have arrived at the Thai coast in about half an hour and at the east coast of Sri Lanka in just over 1.5 hours. The waves wrapped around the back side of Sri Lanka (western side toward mainland India) by about 2 hours and 45 minutes after the earthquake. They reached and ran over the Maldives by approximately 3.5 hours after the earthquake. The waves arrived in Somalia at 7 hours, and in Kenya by roughly 8.5 hours after the earthquake.  Question 3 0 / 2 pts Approximately how long after the earthquake did the wave to reach the west coast of Thailand ? 40 minutes Approximately how long after the earthquake did the wave to reach Sri Lanka ? 7 hours 30 minutes Approximately how long after the earthquake did the wave to reach The Maldives ? 3 hours Approximately how long after the earthquake did the wave to reach Kenya ? 7 hours and 40 min Now go back to the NOAA Natural Hazards Viewer. (https://www.ncei.noaa.gov/maps/hazards/) Open it in another tab or window.

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2/17/24, 9:17 PM Chapter 4 & Lecture Set 4: Discussion Questions (Tsunami): GLG 110: Dangerous World (2024 Spring - A) https://canvas.asu.edu/courses/179803/quizzes/1350990?module_item_id=12883050 4/8 Answer 1: You Answered 9.4 Answer 2: You Answered 7.8 At the left, check the 'Tsunami Observations' box and below that, under "Selected Significant Tsunami Events," choose "2004/12/26 Sumatra, Indonesia." Now zoom to the locations in the previous question. Remember to zoom with the slider at the top left of the map. The bars along the coasts represent measurements or observations of the 2004 tsunami heights. The bars are scaled according to the measured heights and the colors represent the types of measurements; yellow are eyewitness accounts or surveys after the fact; cyan are gauge measurements. Explore the measurements by clicking on the bottom of the bars. What are the maximum values you found for each of the locations above? Keep in mind that the measurements are in meters; one meter is approximately 3 feet / 1 yard. Write what you find in the blanks below next to the relevant locations. Banda Aceh, Indonesia 9.4 Coastal Thailand 7.8 Sri Lanka, east coast 5.12 Sri Lanka, west coast 6 Maldives 2.74 Kenya 3.3 **Tips: I had to zoom in relatively close to each site to be able to spread out the cluster of orange and cyan bars. I also changed the 'Basemap" image, on the top right --> dropdown menu (Basemap)--> 'World Imagery (ESRI)' to allow me to see the borders of each country more easily.

2/17/24, 9:17 PM Chapter 4 & Lecture Set 4: Discussion Questions (Tsunami): GLG 110: Dangerous World (2024 Spring - A) https://canvas.asu.edu/courses/179803/quizzes/1350990?module_item_id=12883050 5/8 Answer 3: You Answered 5.12 Answer 4: You Answered 6 Answer 5: You Answered 2.74 Answer 6: You Answered 3.3 The average heights for waves that reached Banda Aceh, Indonesia were around 5-12 meters high, with a m aximum reported wave height of 20 meters ! You can compare the city of Banda Aceh wave heights to the wave heights that hit the western coast of Sumatra, in the town of Lhonga, where the maximum wave height was recorded up to 50 meters ! Coastal Thailand had average wave heights of 6-8 meters, with a maximum wave height recorded at 20 meters. The east coast of Sri Lanka received average wave heights of 6- 8 meters with a maximum wave height measured around 12 meters. The west coast of Sri Lanka received average wave heights of 3-4 meters with a maximum wave height measured at 10 meters. The Maldives reported average wave heights of 1.5-2.5 meters with a maximum reported wave height of 4.5 meters . NOTE: The average elevation in the Maldives is 1.5 meters, this means the maximum wave heights could have washed over and flooded almost the entire island chain! Kenya received average wave heights of < 1 meter (~0.5 meters) with a maximum wave height reported of 3 meters.  Question 4 Not yet graded / 1 pts Now watch raw video footage from each of those locations. You can scroll ahead and backward to get a sense of what it was like in each location. As you watch these, think about the timing and wave heights at these locations from your answers and exploration above. Afterwards, write a couple of sentences about whether or not the raw footage met your expectations. Were you surprised by anything you saw? Which location had the most unexpected characteristics in terms of timing, height, raw footage? Banda Aceh

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2/17/24, 9:17 PM Chapter 4 & Lecture Set 4: Discussion Questions (Tsunami): GLG 110: Dangerous World (2024 Spring - A) https://canvas.asu.edu/courses/179803/quizzes/1350990?module_item_id=12883050 7/8 Your Answer:  Question 5 Not yet graded / 1 pts 0:00 / 0:00 Kenya 0:00 / 0:00 As watching these deepest sorrows for the unfortunate souls who lost their lives to these events that occurred especially Banda ach, deep sadness fueled me because that is such an unpleasant way to go. Out of all of them, the death count of Banda ach is sad but the Kenya video worries me because of the lack of safety gear and some random lady wearing what looks like a bathing suit and that's it. All of these videos quite honestly made me really sad because I am sure someone has died in one of these events that has happened. This is an excellent 7-minute video! Please watch it! It contains important information about tsunami hazards mitigation. After you watch the video, please write a few sentences explaining why the 2004 Indian Ocean tsunami was so deadly. Consider also starting a discussion about the topic on the Q&A Board.

2/17/24, 9:17 PM Chapter 4 & Lecture Set 4: Discussion Questions (Tsunami): GLG 110: Dangerous World (2024 Spring - A) https://canvas.asu.edu/courses/179803/quizzes/1350990?module_item_id=12883050 8/8 Your Answer: Survey Score: 7 out of 7 Why the Indian Ocean Tsunami Was So Deadly Why the Indian Ocean Tsunami Was So Deadly Umm just hearing the word tsunami is terrifying and knowing they can be 98 ft long is something that I know I would have to accept my death and the fact that it went to many other countries is crazy. What is crazy is I believe that from now on there should be sensors everywhere in the ocean because if the technology exists place them everywhere so that many people should not be able to die I understand that can be difficult but this is just wild to think about. I am more afraid of tsunamis more than ever now.

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