GLG 112 1st Edition Lecture 16Outline of Last Lecture I. Earthquake intensity (qualitative)A. Modified Mercali ScaleB. Factors that control the intensity of ground shakingOutline of Current Lecture Earthquake hazardsI. Ground shakingA. What do you do if you are inside?1. Stay inside2. Get under something3. Kitchens4. What about if you are in bed?B. What do you do if you are outside?C. What do you do if you are in your car?II. LiquefactionIII. LandslidesCurrent LectureIn this lecture we talked about what can happen in an earthquake. We also talked about what todo in the event of an earthquake. Kitchens are the most dangerous to be in. Cabinets can fly open and let glass dishes go flying forexample. If you are in bed you should stay in bed. It is also smart to keep a change of clothes/shoes next to your bed in case you need to get out of your bed after the initial shaking. It is never safe to run in or out of a building in the event of an earthquake because of the “danger zone.” The building itself (in first world countries at least) may be built to withstand earthquakes, but the overhangs and outside features may not be. These can fall down around the exterior of the building. You could be running in or out and something could hit you. That is why you should stay where you are. These notes represent a detailed interpretation of the professor’s lecture. GradeBuddy is best used as a supplement to your own notes, not as a substitute.If you are outside a field is the safest place to be. If it is possible to get to a field or big open areathat is where you should go. If you are driving you should pull over to a safe spot and stay in your car. Liquefaction is when wet sediments become quick sand in an earthquake. This can cause a lot of costly damage to buildings and such. Anything that is built on loose, wet sediment or an area that used to be wet will start to sink and move. Landslides are also a hazard in mountainous areas where sediment could fall. The example you need to know for this is the 1964 Alaskan earthquake with a magnitude of 9.2. We will talk more about landslides next
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