GEL 1 Discussion Section Assignment 5 Answer Sheet Using Google Earth to Explore the 2010 Haiti Earthquake 1) What other Caribbean islands might be vulnerable to earthquakes related to transform plate boundaries? 2) What do you think the tectonic setting of the volcanic island arc of the Lesser Antilles is? 3) Using the ruler tool at the very top, what is the distance (in km) from the Haiti airport to the epicenter? 4) Scroll through the Earthquake Locations aftershocks. What was the range of aftershock magnitudes greater than M4.0? 5) Over how many days did these large aftershocks occur after the main quake on January 12, 2010? Locations aftershocks. What was the range of aftershock magnitudes greater than M4.0? 6) Looking at the USGS Shake Intensity key in the top left, how is the most intense shaking described, in terms of Potential Shaking and Potential Damage? 7) Do the arithmetic to estimate how many people in Port au Prince were affected by extreme shaking. 8) Guess as to why you think these linear stream valleys follow the trace of the fault? (0 pts) 9) From the video, briefly summarize what building materials they used and what was the cause of the failure in construction. 10) Do the arithmetic to estimate how many homes are enclosed in the entire area of 0.09 km2? 11) How many Haitians live below the poverty line, according to the World Bank? How many continue to live in makeshift camps, ten years after the earthquake? 12) What do you think the bottom line is for why the recovery in Haiti is so slow and ineffective? A sentence or two is enough. GEL 1 Discussion Section Assignment 5 Answer Sheet Using Google Earth to Explore the 2010 Haiti Earthquake 1) What other Caribbean islands might be vulnerable to earthquakes related to transform plate boundaries? 2) What do you think the tectonic setting of the volcanic island arc of the Lesser Antilles is? 3) Using the ruler tool at the very top, what is the distance (in km) from the Haiti airport to the epicenter? 4) Scroll through the Earthquake Locations aftershocks. What was the range of aftershock magnitudes greater than M4.0? 5) Over how many days did these large aftershocks occur after the main quake on January 12, 2010? Locations aftershocks. What was the range of aftershock magnitudes greater than M4.0? 6) Looking at the USGS Shake Intensity key in the top left, how is the most intense shaking described, in terms of Potential Shaking and Potential Damage? 7) Do the arithmetic to estimate how many people in Port au Prince were affected by extreme shaking. 8) Guess as to why you think these linear stream valleys follow the trace of the fault? (0 pts) 9) From the video, briefly summarize what building materials they used and what was the cause of the failure in construction. 10) Do the arithmetic to estimate how many homes are enclosed in the entire area of 0.09 km2? 11) How many Haitians live below the poverty line, according to the World Bank? How many continue to live in makeshift camps, ten years after the earthquake? 12) What do you think the bottom line is for why the recovery in Haiti is so slow and ineffective? A sentence or two is enough. GEL 1 Discussion Section Assignment 5 Answer Sheet Using Google Earth to Explore the 2010 Haiti Earthquake Goal: You’ll use Google Earth to explore the geological factors and societal effects of the 2010 Haiti earthquake. It should take roughly an hour to finish. Tectonic setting of the island of Hispaniola (Haiti & Dominican Republic) on the complex transform plate boundary between the Caribbean and North American plates. Epicenter on the Enriquillo-Plaintain Garden fault. Background: The epicenter of the catastrophic M7.0 earthquake that shook Haiti on January 12, 2010, was just west of the capital of Port au Prince. Estimates vary, but it’s likely that over 200,000 people died. The earthquake either damaged or destroyed many buildings such as the Presidential Palace, the Port au Prince Cathedral, the main jail, and the headquarters of the United Nations. In the immediate aftermath, about one million people were left homeless. The societal effects have been long lasting and the nation still hasn’t fully recovered (as of 5/1/20). Part 1: Geology of the Haiti Earthquake You should have already downloaded Google Earth at http://earth.google.com or you could use it directly with the Chrome browser at https://www.google.com/earth/ 1) Go to the Discussion Files folder in Canvas and drag the kml file Haiti-Earthquake-nl.kml to your computer. Clicking on it should open it in Google Earth and the features of the file should show up in the Places panel in the left column. (NOTE: This file will have many more features than what we’ll be using for this exercise, but you are highly encouraged to open it and explore further.) Within the Layers panel, under “Borders”, check “Country Names” and check “Labels” so that “Populated Place,” “Islands,” “Geographic Features” and “Water Bodies” are active. Below, turn on “Roads” and “3D Buildings.” Check “Terrain” on the bottom as well. 2) Back up in the Places panel, leave all features under “Haiti Earthquake” unchecked, then double-click on “Haiti Earthquake” and you’ll be directed automatically to the island of Hispaniola where Haiti is located. Zoom out a bit to view its location in the Caribbean. Look at the bathymetric features on the seafloor around the island of Hispaniola and compare them to the tectonic maps on the first page of this exercise. The Caribbean plate is complex. What other Caribbean islands might be vulnerable to earthquakes related to transform plate boundaries? Place your answers on the Assignment5 Answer Sheet found in the Discussion folder. Find the north-south chain of islands just to the east. What do you think the tectonic setting of the volcanic island arc of the Lesser Antilles is? 3) Click the down arrow

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