पृथ्वी की आंतरिक संरचना की समझ प्राप्त करने के लिए भूकंप सर्वेक्षण का क्या महत्व है? विस्तार से विश्लेषण कीजिए। / To what extent does seismic investigation contribute to our understanding of the Earth's interior structure? Analyze its significance in detail.

Seismic waves: P-waves (3); long-lived; S-waves: 4-5 km/s (transverse). Body waves

From P-waves:

1. Inner wave (solid word element) - The closer the interior, lower the need of wave and the i-waves directly opposite mark the frost

2. Helps in determining interior densities due to earth P-wave shadow zone by i-waves can travel through solid, liquid

From S-waves:

1. Interior is non-homogenous as to extent of refraction

2. Mantle (test) is also non-homogenous so refraction is away from the core

3. The core is keyed (outer core)

1. Inner wave (solid word element) - The closer the interior, lower the need of wave and the i-waves directly opposite mark the frost

2. Helps in determining interior densities due to earth P-wave shadow zone by i-waves can travel through solid, liquid, solid, liquid

From S-waves:

1. Interior is non-homogenous as to extent of refraction

2. Mantle (test) is also non-homogenous so refraction is away from the core

3. The core is keyed (outer core)

— Kush Motwani · AIR 11