Earthquake Intensity Scales Explained
Earthquake intensity scales measure the effects of an earthquake at a specific location, based on observed damage and human reactions. This differs from magnitude scales (like Richter), which measure the energy released at the earthquake's source.
Recognized Intensity Scales
Several scales are commonly used to assess earthquake intensity:
- Rossi-Forel Scale: An early scale (1880s) with 10 levels, describing effects from imperceptible tremors to destructive shocks.
- Modified Mercalli Intensity (MMI) Scale: A widely used scale with 12 levels (I to XII), assessing intensity based on observed structural damage and how people experience the shaking.
- Medvedev-Sponheuer-Karnik (MSK) Scale: Similar to the MMI scale, also with 12 levels, used primarily in Europe and Asia. It considers building types and macroseismic effects.
Identifying the Non-Standard Scale
A "Graphical Scale" is a general term and not a specific, established scale for measuring earthquake intensity in seismology. While graphs might be used *within* the assessment process or to *represent* data from intensity scales, "Graphical Scale" itself does not denote a standard method like the Rossi-Forel, MMI, or MSK scales.
Conclusion
Therefore, the Graphical Scale is the term listed that is NOT a recognized scale used to measure the intensity of an earthquake.
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Important Questions from Mixed Topic (CUET PG)
- Kalpsutra, the illustrated canonical text is from:-
- The Harappan city almost exclusively devoted to craft production was-:
- Mohandas Karamchand Gandhi launched quit India movement after the failure of:-
- The "Objectives Resolution" was introduced in constituent assembly by:-
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