Non-tidal water level variations

Question 1

Tsunami info

Answer 1

• caused by landslides, undersea earthquakes
• generated in deep ocean
  propagate without suffering much dissipation
• amplified due to shoaling/ refraction
• richter scale: height relation

Question 2

Tsunami characteristics

Answer 2

• ‘long waves’
• wavelength» water depth
• fast propagation speed
• shoaling causes amplification near coasts
• causes are unpredictabl
• can be accounted for in design -> expensive