Risk and Earthquakes Flashcards
What is the definition of risk, including its 2 components?
Risk = Probability of a hazardous event * cost if that event occurs
What lessons can past earthquakes provide us for improving future success in surviving them?
Building bridges with concrete pads but now we have put rubber between slabs so it absorbs the movement
What are the 3 approaches to risk analysis that we discussed in class?
Utility approach, rights-based approach, technology approach
How do earthquakes transmit energy?
Through p and s waves
How does this allow us to determine the epicenter?
Tells us how close or far away the earthquake was and how deep it was.
What scales are used to quantify earthquakes?
Richter scale
What is the relationship between plate tectonics and the location of earthquakes and volcanos?
Where that plates come together is where earthquakes originate and volcanos are there because of the pressure
Why are earthquakes at subduction zones likely to cause tsunamis?
Most of the earthquakes that happen here are very deep and deep earthquakes cause the water be sucked down further and then when the water is released it creates big waves causing tsunamis
How does their depth compare to earthquakes at other locations?
The depth in subductions zones is a lot deeper because this is where tectonic plates meet and it tends to be way deeper here
