TOPIC INFO (UGC NET)
TOPIC INFO – UGC NET (Geography)
SUB-TOPIC INFO – Geographical Techniques (UNIT 9)
CONTENT TYPE – Detailed Notes
What’s Inside the Chapter? (After Subscription)
1. Concept and Definition
2. Data Sources and Preparation
3. Construction Method
4. Interpretation of the Graph
5. Relationship with Hypsometric Analysis
6. Applications in Geography
7. Advantages
8. Limitations
9. Conclusion
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Altimetric Frequency Graph
UGC NET GEOGRAPHY
Geographical Techniques (UNIT 9)
The altimetric frequency graph is a quantitative graphical technique used in geography to analyze the distribution of land elevations within a given area. It is a core tool in physical geography and geomorphology, particularly in the study of relief, topography, and landscape evolution. The graph is constructed using altitude data obtained from topographic maps, digital elevation models (DEMs), or contour-based surveys, and it represents how frequently different altitude ranges occur within the selected region.
This technique is entirely factual, numerical, and objective in nature. It does not interpret human activity or perception but strictly analyzes elevation data to describe the vertical characteristics of the Earth’s surface.
Concept and Definition
An altimetric frequency graph is a statistical representation showing the frequency (or percentage) of land area lying between successive altitude intervals. The horizontal axis (X-axis) represents altitude classes (usually in meters above mean sea level), while the vertical axis (Y-axis) represents frequency, which may be expressed as absolute area units (square kilometers), number of grid cells, or percentage of total area.
The primary purpose of this graph is to identify dominant altitude zones, understand relief concentration, and compare elevation distributions between different regions.