Earthquakes_Tsunami_Study Guide
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Feb 20, 2024
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EES 0836
Earthquake/Tsunami Unit Quiz Study Guide
Disasters: Geology vs. Hollywood
Introduction
Be sure to review all lectures and lecture notes before starting this quiz. Quiz Details
●
Format
: 10 T/F, 10 multiple choice, 1 data analysis, and 1 movie clip ●
Time
: quiz must be completed in 50 minutes ●
Attempts
: you will only have one attempt *
note: Once you click “begin,” the timer starts and you must take the quiz in one sitting. This means that
you cannot start the quiz, answer a few questions, stop, and then come back at a later time. General outline/concepts
Geologic process, seismic events and tectonics, types of faults, stress vs strain, Eq cycle, epicenter vs focus, seismic waves, creep, tectonics and types of faults, measuring Eqs (richter, moment mag, mercalli),
Virginia Eq and density, shake maps, FACTS (not the acronym but the individual concepts), recurrence interval, forecasting, man-made earthquakes, people's perception and preparedness plate tectonics and tsunamis, local/distant tsunami, wave density across oceans, global tsunami hazards, primary/secondary effects, watch vs warning, runup maps, what can we do in the event of *note: This is a broad outline of concepts. Make sure you are aware of the details within these.
Data Analysis Questions (
You will see 1 of the 2 questions here) 1.
Given the fact that these two
events had similar magnitudes,
why is it that the Virginia earthquake was felt by so many more people than on the west coast? Explain your answer. Given the fact that these two events had similar magnitudes, the Virginia earthquake was felt by so many more people than on the west coast because the rock is much older, and the earthquake energy can spread farther and have a greater impact. Faults in these older rocks have also had more time to heal, which allows seismic waves to cross them more effectively when an earthquake occurs. Additionally, these earthquakes on the east of the Rocky Mountains cause noticeable ground shaking at much farther distances than comparable-sized earthquakes in the west.
2.
In the provided image, you can see the wave height (colors) and the travel times (white lines) of the 2004 Indian Ocean tsunami. You can see the part of the wave hitting Antarctica (which makes
sense), but what about the wave that hit the east coast of South America? What type of wave was this, and how many hours did they have to prepare for this event? The type of wave was a tele tsunami, which took about 7 hours to prepare. Movie Clip Questions (
You will see 1 of the 2 questions here) Use the clip from the movie San Andreas (2015
)
and answer the following question. 1.
In this scene, there is a tsunami that hits San Francisco following a high magnitude earthquake. Tectonically speaking, why wouldn't you expect to see a local tsunami in this area? Tectonically speaking, you wouldn’t expect to see a local tsunami in this area because the fault movement along the San Andreas is mainly horizontal and the majority of this fault is on land.
Use the clip from the movie 10.5
Apocalypse (2006)
and answer the following question. 2.
This is an interesting clip of an earthquake in California. While there are a couple things wrong with the clip, there is one thing that gets me: what type of fault is this? Explain what type of fault you think this is and explain your reasoning. The type of fault this is strike-slip fault due to the North American plate sliding against the Pacific Plate.
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