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Which earthquake measuring scale is based on Earth’s rigidity and the amount and area of slip on the fault?
- a)Richter magnitude scale
- b)Moment magnitude scale
- c)Saffir-Simpson scale
- d)Mercalli intensity scale
Correct answer is option 'B'. Can you explain this answer?
Verified Answer
Which earthquake measuring scale is based on Earth’s rigidity an...
The correct answer is the Moment magnitude scale.
An earthquake is the sudden release of strain energy in the Earth’s crust resulting in waves of shaking that radiate outwards from the earthquake source. An earthquake is the result of plate tectonic activities.
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Which earthquake measuring scale is based on Earth’s rigidity an...
Understanding the Moment Magnitude Scale
The Moment Magnitude Scale (Mw) is a modern method for quantifying the size of earthquakes. It provides a more accurate measure than the traditional Richter scale, particularly for larger events.
Key Components of the Moment Magnitude Scale
- Earth's Rigidity: The scale takes into account the rigidity of the Earth's crust, which influences how much energy is released during an earthquake.
- Slip on the Fault: It measures the amount of slip (displacement) that occurs along the fault line during an earthquake. This is crucial as greater slip usually correlates with a more powerful quake.
- Fault Area: The scale also considers the area of the fault that has slipped. A larger fault area typically indicates a more significant release of energy.
Why is Moment Magnitude Scale Superior?
- Accuracy for Large Quakes: The Moment Magnitude Scale provides a more reliable estimate of earthquake size than the Richter scale, especially for those with a magnitude greater than 7.0.
- Global Applicability: It can be used for earthquakes that occur anywhere in the world, making it a universal standard.
- Seismic Moment: The scale is derived from the seismic moment, which is a measure of the energy released during an earthquake. This is calculated from the fault's size, the amount of slip, and the rigidity of the rocks involved.
In summary, the Moment Magnitude Scale is essential for accurately measuring the magnitude of earthquakes, taking into account multiple geological factors that contribute to the event's overall energy release.
The Moment Magnitude Scale (Mw) is a modern method for quantifying the size of earthquakes. It provides a more accurate measure than the traditional Richter scale, particularly for larger events.
Key Components of the Moment Magnitude Scale
- Earth's Rigidity: The scale takes into account the rigidity of the Earth's crust, which influences how much energy is released during an earthquake.
- Slip on the Fault: It measures the amount of slip (displacement) that occurs along the fault line during an earthquake. This is crucial as greater slip usually correlates with a more powerful quake.
- Fault Area: The scale also considers the area of the fault that has slipped. A larger fault area typically indicates a more significant release of energy.
Why is Moment Magnitude Scale Superior?
- Accuracy for Large Quakes: The Moment Magnitude Scale provides a more reliable estimate of earthquake size than the Richter scale, especially for those with a magnitude greater than 7.0.
- Global Applicability: It can be used for earthquakes that occur anywhere in the world, making it a universal standard.
- Seismic Moment: The scale is derived from the seismic moment, which is a measure of the energy released during an earthquake. This is calculated from the fault's size, the amount of slip, and the rigidity of the rocks involved.
In summary, the Moment Magnitude Scale is essential for accurately measuring the magnitude of earthquakes, taking into account multiple geological factors that contribute to the event's overall energy release.
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Which earthquake measuring scale is based on Earth’s rigidity and the amount and area of slip on the fault?a)Richter magnitude scaleb)Moment magnitude scalec)Saffir-Simpson scaled)Mercalli intensity scaleCorrect answer is option 'B'. Can you explain this answer?
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