Tsunami - Chapter 8 p. 204-227 Use the Class Notes, Power Point Lecture and the

Question

Tsunami - Chapter 8 p. 204-227 Use the Class Notes, Power Point Lecture and the text to answer the following questions: 1. A) Over what length of coastline did the Japan 2011 tsunami inflict severe damage?B) What geologic event created the tsunami? 2. A) How much permanent land subsidence occurred in the Japan 2011 event? B) What are two hazards associated with this subsidence? 3. Which country has the most detailed history of tsunami? 4. Give a detailed explanation of the difference between wind-formed waves and tsunami (include how they approach the shore). 5. List all the geologic events that can cause a tsunami. 6. Why did 12 people die in Crescent City, California from the tsunmai generated by the 1964 earthquake in Alaska? 7. A) What is a flank collapse and where will one most likely occur? B) What size wave would strike the east coast of North America if there is a collapse in the Canary Islands? C) Do you think people along the east coast would head a tsunami warning? Why or why not? 8. What caused the tsunami in Lituya Bay, Alaska? 9. A) What is a seiche? B) Can seiches be caused by wind? Thought Question 10. List at least 5 things you can do to survive a tsunami.

Explanation / Answer

Run uphill. If a tsunami is on its way, the safest place is naturally-formed high ground, like a hill or a mountain, as far from the coastline as possible. Otherwise, the roof of a tall, sturdy building will do. (Big beachfront hotels tend to be secure; small wooden houses are not.) If you can't get to high ground in time, the last best option is to climb a strong-looking tree as high as you can. Trees often get torn out of the ground during tsunamis, though, so choose wisely. If you can't find a tree or a structure to climb, cling to something that floats, like a log or a fishing boat. If you're in a boat on the ocean when the tsunami hits, don't head to shore

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