To what extent does seismic investigation contribute to our understanding of the Earth's Interior Structure? Analyse its significance in detail.
Introduction
19 words
Main Body
Various seismic wave types:
P-waves |
S-waves |-- Various seismic waves
Rayleigh wave |
[Seismic Investigation] → [Earth's Interior]
1. By studying the refraction of various waves
2. The blind zones of P & S-waves show that earth's centre is solid. [E.g] P-waves blocked by solid layer; illustration of blind zone and two blind zone patterns
3. The interpretation only tells us the different density of various layers and the points where it change. [E.g] Lehmann discontinuity, Gutenberg discontinuity
Limitation:
1. It can't tell the exact constituents of various layer. & Requires volcanic precis on extra-terrestrial object analysis
2. Accuracy level in terms of density is subjective.
— Prajnanandan Giri · AIR 24
Diagram
Diagram showing: P-waves blocked by solid layer, blind zone illustration showing one blind zone and two blind zones patterns
- Clear explanation of seismic waves
- Includes diagrams
- Uses specific examples of blind zones
- Connects wave behavior to earth structure
Prajnanandan Giri
Important Geophysical Phenomena and Geographical Features
Earth's Interior Structure
Seismic investigation and earth structure
126
Total words
7
Paragraphs
Technical and explanatory
Tone