6.5 Openscied Natural Hazards

What happens to a community when a tsunami occurs?

• 2011 tsunami triggered by an earthquake off the eastern coast of Japan, causing devastating loss of life and structural damage.

• Initial engineering ideas intended to detect tsunamis, provide warning of their approach, and reduce their impact.

• Both Answers

What is a tsunami and what does it cause?

• A large wave that results from movement of the ocean floor.

• Cause major flooding that damages homes and property and harms people in the community.

• IDk

What are some proposed solutions to areas at risk of tsunamis?

• System of detection sensors

• Warning plans

• Design solutions to reduce damage.

• All of the above

Where do tsunamis happen and what causes them?

• All of the above

• Tsunamis are caused by earthquakes, volcanic eruptions, and landslides.

• Stronger, shallow earthquakes tend to be most related to tsunami formation.

What causes a tsunami to form and move?

How can we forecast where and when tsunamis will happen and which communities are at risk?

• Places with more people, closer to water, or at low elevations have greater risk for a tsunami to cause damage.

• with the weather channel

• rolling dice

• IDK

How can we reduce damage from a tsunami wave?

How are tsunamis detected and warning signals sent?

• complex system of instruments set up on land (seismometers), on the ocean surface (surface buoys), on the ocean floor (tsunameters), and in space (satellites).

• tsunami warnings are sent only when specific sets of criteria are met, first regarding the location, strength, and depth of the earthquake that is detected, and then regarding whether the tsunami is expected to reach land.

• both answers

What are ways we can communicate with people before and during a tsunami?

• wireless emergency alerts, text message, tv, telephone communication, outdoor sirens, radio

• analog/digital

• depends what options the stakeholder have to communicate with

• all of the above (A variety of communication strategies and modalities are necessary to ensure that all people at risk receive the warning.)

People particularly at-risk during a hazard