With the recent earthquakes in California, many are concerned about the next earthquake which could be the potentially “large” one that many geologists have been predicting for many years. The Cascadia Subduction Zone is also known as the CSZ megathrust fault. It is about 1000 km long, a dipping fault that extends from the northern Vancouver Islands to Cape Mendocino in California. The area runs through British Columbia, Washington, Oregon and California. The Cascadia region has experienced several types of earthquakes and it is very likely that similar earthquakes will occur in the near future. Cascadia earthquakes fall into three main categories: The first type is shallow or crustal earthquakes caused by ruptures of faults in the North American plate. The Scott Mills earthquake occurred in 1993 and occurred in the Willamette Valley. The second type is the deep or intraplate one, caused by rupture faults within the subducting Juan de Fuca plate; deep earthquakes are often the most damaging type of earthquake. In 2001, a deep earthquake called the Nisqually struck the Puget Sound area of ​​western Washington. The third type is represented by the Cascadia subduction zone earthquakes, the most powerful and with the largest magnitude of 9 on the Richter scale. The Cascadia subduction zone is a little more complicated than the other two types of earthquakes. The zone separates the Juan de Fuca plates and the North American plate, subduction earthquakes occur when one plate pushes under each other. When one of the faults ruptures, the overlying plate pushes up, generating frictional stress. Eventually the stress reaches a critical point, a sudden failure occurs along the fault plane resulting in a "megathrust" earthquake rel...... middle of paper... .... the dunes will keep the wave at bay to land on shore. There are signs all over town, and we have been going to Manzanita for over 15 years, our family has never talked about who to do, we don't know where to go and we don't have an emergency supply just in case of any emergencies. I really believe the city needs to educate its residents and run practices, like fire drills for schools. I think being prepared and educated will save a lot of lives if and when we have the big one in the Cascadia region. Works Cited http://www.crew.org/cascadia http://www.crew.org/sites/default/files /cascadia_subduction_scenario_2013.pdf http://www.pnsn.org/outreach/earthquakesources/crustalfaults www.iris .edu/hq/files/programs/education_and_outreach/aotm/5/2.Subduction_Rebound_Background.pdf www.crew.org/sites/default/files/cascadia_subduction_scenario_2013.pdf