Seismic waves are divided into body waves (P-waves and S-waves) and surface waves. P-waves and S-waves are crucial for understanding Earth's deep interior. Analyzing seismic-wave velocity variations can provide insights into Earth's internal structure and processes.
Seismic waves are categorized into two main types: body waves, which travel through Earth's interior, and surface waves, which travel along the ground surface. Body waves include P-waves (primary waves) and S-waves (secondary waves). P-waves are compressional waves, while S-waves are shear waves.
Seismologists find body waves, particularly P-waves and S-waves, useful in studying Earth's interior. These waves provide valuable information about the composition and structure of the Earth's deep interior, aiding in understanding Earth's layers, temperatures, and processes such as mantle convection.
By analyzing the variations in seismic-wave velocity as they pass through different rock types and under various temperature and pressure conditions, seismologists can gain insights into Earth's internal structure and properties. This analysis, along with studying earthquake waves, allows scientists to make inferences about planetary interiors and geologic processes on Earth.
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