Body waves travel through the Earth's interior and consist of two types:

* P-waves (primary waves): These are compressional waves that travel faster than S-waves and can pass through solids, liquids, and gases.

* S-waves (secondary waves): These are shear waves that travel slower than P-waves and can only pass through solids.

Surface waves travel along the Earth's surface and consist of two types:

* Love waves: These are horizontal shear waves that cause the ground to move back and forth perpendicular to the direction of wave travel.

* Rayleigh waves: These are a combination of compressional and shear waves that cause the ground to move in an elliptical motion.

Reasons why surface waves are more destructive:

* Higher amplitude: Surface waves have larger amplitudes than body waves, meaning they cause greater ground displacement.

* Longer duration: Surface waves travel more slowly than body waves and can continue for longer periods, resulting in prolonged shaking.

* Focus on the surface: Surface waves are concentrated near the Earth's surface, where structures and people are located.

Impact on Structures:

Surface waves are particularly damaging to buildings and infrastructure because their long duration and large amplitude can cause significant swaying and resonance, leading to collapse.

Conclusion:

While body waves can also cause damage, surface waves are generally more destructive due to their higher amplitude, longer duration, and concentration near the Earth's surface. They are the primary cause of ground shaking during earthquakes and responsible for the majority of structural damage.