Subduction zone earthquakes occur on the plate interface between the subducting plate and the overlying plate. Three types of earthquakes are associated with the CSZ: large subduction zone earthquakes, small to moderate deep earthquakes in the Juan de Fuca plate, and small to moderate shallow earthquakes in the North American plate. Use the additional information below to help integrate your knowledge of station motion, seismic hazards, and volcanic hazards. Describe how the information on the final map refines your mental model of processes near the Cascadia Subduction Zone.Can you detect a relationship between the locations of earthquakes and the velocity of the GPS stations?.Make sure that the arrow head does not make your vector longer than the line you drew. Complete your vector by drawing a triangle whose point is on the extreme end of the line you drew (away from the station where you started).You will need to draw a triangle to complete the "arrow" end of your vector. Note that you can only move one point at a time after a shape is drawn. Delete them after you are familiar with how the tool works. Select the Draw a shape tool from the Google Drawing Tools icon and practice drawing a few very small triangles.Starting at the station point you have selected, draw your vector using a straight line for the distance and angle you have determined.When you draw your velocity vector, make certain that it is parallel to the edge of the paper. Align the edge of a piece of paper along that angle and use two very small pieces of tape to tape it onto your monitor. Find the correct angle from north on the protractor.Move the window to the side of your monitor that you use the least. Open an online protractor in a new window.
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