Primary waves (P-waves), travels at high speeds, up to 6 kph.

Earthquake Waves

What is a tsunami? Seismic waves travel through the Earth's layers, causing damage based on their speed and type.

These smaller shocks occur as the Earth's crust continues to adjust following an initial earthquake and can last for months or even years.

The 1906 San Francisco earthquake is still remembered as one of the most devastating natural disasters in US history. In the aftermath of the quake, it's estimated that over 3,000 people lost their lives. As discussions around disaster preparedness and building resilience grow, this event's significance takes center stage.

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Understanding Earthquakes

What causes aftershocks? Tsunamis occur when a massive earthquake causes a displacement of the ocean's water, resulting in a high-speed wave.

  • Myth: Building height and location reduce the impact of earthquakes. Reality, *both can significantly impact damage and displacement.
  • The Earth's crust is the outermost solid layer, comprising continental and oceanic plates that move continually.

    Take the First Step in Understanding and Preparation

    Relevance for Individual and Community Preparedness

    Movement between plates results in potential earthquakes, released energy generating destructive waves.

      The 1906 San Francisco Earthquake: A Historical Disaster with Ongoing Relevance

      Earthquake Mechanism

      (S-waves) travel slower than P-waves and move through the Earth's interior at approximately 87% its P-wave speed.

      Growing Interest in the US

      An earthquake occurs when there's a sudden release of energy in the Earth's crust, typically as a result of tectonic plate movement. This release creates seismic waves that can cause widespread destruction.

    • There's no guaranteed earthquake prediction method.
    • At risk individuals, law enforcement, government agencies, civil engineers, and insurance providers will benefit from accessible disaster resources.
    • Discuss and prepare emergency response plans
    • S-waves
    • Develop knowledge through educational resources