Case Study 1

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School

Simon Fraser University *

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312

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Geography

Date

Dec 6, 2023

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docx

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Uploaded by anniesun9876

1. Summarize the tsunami risk faced by residents of Long Beach, WA Residents of Long Beach, WA, face a tsunami risk due to the town's location along the Pacific Coast. Long Beach is vulnerable to tsunamis because it is situated on a coastline near the Cascadia Subduction Zone. This tectonic boundary has the potential to generate significant undersea earthquakes, which can trigger tsunamis 2. Discuss potential wave height and inundation areas The potential wave height is about 3-4 meters. The inundation depth is around 20 feet and the inundation extent is about 1 mile. 3. Evaluate how the physical and human geography of Long Beach affects its vulnerability to tsunami hazards. Long Beach is situated on a narrow, low-lying coastal strip along the Pacific Ocean. This geographic setting makes it susceptible to tsunamis, especially those generated by the nearby Cascadia Subduction Zone. The flat terrain offers little natural elevation to escape the oncoming waves. It has a relatively low population density, which can be advantageous in evacuation scenarios. However, it also means that infrastructure and resources for tsunami preparedness may be limited compared to more densely populated areas. Additionally, Long Beach is a popular tourist destination, particularly in the summer months. This seasonal influx of visitors poses a challenge for evacuation planning during a tsunami event, as there may be a transient population less familiar with local hazards. The town's infrastructure, including roads and bridges, could be vulnerable to damage during a tsunami, hindering evacuation efforts and recovery. 4. Visualize the process of tsunami evacuation and where challenges might exist in this process When a seismic activity first occurs, a tsunami warning is issued. A challenge is the speed of the warning system. When people are alerted through sirens, mobile alerts, and media, the challenge is ensuring that everyone receives and understands the warnings and are able to evacuate within 30 minutes. Designated routes for evacuation to higher ground are marked with signs and maps. However, traffic, congestion, road damage, or blocked routes can hinder evacuation time. Consistent updates on the tsunami's situation and the situation in the evacuated area are necessary, but maintaining communication during the event is a challenge, especially if communication infrastructures are damaged. Lastly, after the tsunami ends, authorities assess the situation and allow residents to return. 5. Strategize the best approach for reducing risk for residents of Long Beach, WA The best strategic approach should encompass education and awareness to inform the community about tsunami risks and preparedness, specific evacuation plans, and infrastructures that comply with building safeties. Regular drills and exercises are essential aspects in approaching to enhance the community’s preparedness and safety in the face of tsunami hazards. 6. Where possible consider solutions that have been implemented elsewhere and evaluate

them for suitability in the Long Beach scenario Australia's public campaigns regarding tsunami evacuation effectively raises awareness of disaster preparedness by setting guidelines of responses in different scenarios. Long Beach can implement similar campaigns to educate residents and tourists about tsunami risks and actions to take when it occurs..

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