What does the Modified Mercalli Scale measure?
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What does the Modified Mercalli Scale measure?
The Modified Mercalli Intensity (MMI) estimates the shaking intensity from an earthquake at a specific location by considering its effects on people, objects, and buildings.
What is the Modified Mercalli Scale based on?
observable earthquake damage
In the United States, we use the Modified Mercalli (MMI) Scale. The Mercalli Scale is based on observable earthquake damage. From a scientific standpoint, the magnitude scale is based on seismic records while the Mercalli is based on observable data which can be subjective.
How is the Mercalli scale calculated?
The calculation for the Mercalli scale is quantified from the observation of the earthquake’s effect on the earth’s surface. It is also based on the effect on humans, objects, and man-made structures. The logarithmic scale for the Richter is base-10 and is based on the amplitude of waves.
Can you determine Mercalli values?
The Modified Mercalli scale is a measure of the amount of damage done by the earthquake. Scientists record responses from many people who experience the earthquake and assign a value from I (1) to XII (12). These numbers are plotted on a map and used to locate the epicenter of the earthquake.
What does the Mercalli scale measure during an earthquake?
The Modified Mercalli intensity scale (MM, MMI, or MCS), developed from Giuseppe Mercalli’s Mercalli intensity scale of 1902, is a seismic intensity scale used for measuring the intensity of shaking produced by an earthquake.
What is the Modified Mercalli scale quizlet?
The Modified Mercalli Intensity Scale measures the degree to which an earthquake is felt by people and the amount of damage caused by the earthquake. One differences is that the scale is a numerical scale that uses Roman numerals from I to XII to describe increasing increasing earthquake intensity levels.
What is the difference between the Richter and Mercalli earthquake scales?
While the Mercalli scale describes the intensity of an earthquake based on its observed effects, the Richter scale describes the earthquake’s magnitude by measuring the seismic waves that cause the earthquake. The two scales have different applications and measurement techniques.
What are the three differences between the Mercalli scale and the Richter scale?
What is Mercalli scale in science?
Definition of Mercalli scale : a scale of earthquake intensity ranging from I for an earthquake detected only by seismographs to XII for one causing total destruction of all buildings.
How can the Modified Mercalli scale be used to determine the epicenter of an earthquake?
What is the range of the Mercalli scale?
between 1 to 12
– The Mercalli scale was developed by Giusseppe Mercalli. – The scale ranges between 1 to 12.
How many divisions are there in the Mercalli scale?
12 divisions
The Mercalli scale has 12 divisions, using Roman numerals from I to XII. I. Not felt except by a very few under especially favorable circumstances. II.
What does the Modified Mercalli Intensity scale measure quizlet?
The Modified Mercalli Intensity Scale measures the degree to which an earthquake is felt by people and the amount of damage caused by the earthquake.
What does the Modified Mercalli Intensity Scale Tell us about an earthquake quizlet?
What does the Modified Mercalli Intensity scale tell us about an earthquake? The Modified Mercalli Intensity scale uses California buildings as its standard to evaluate earthquakes intensity based on the amount of damage to various structures.
When going from a 5 to a 6 on the Richter scale what is the increase in amplitude of seismic waves?
In the case of the Richter scale, the increase is in wave amplitude. That is, the wave amplitude in a level 6 earthquake is 10 times greater than in a level 5 earthquake, and the amplitude increases 100 times between a level 7 earthquake and a level 9 earthquake.
Which scale has 12 levels of intensity?
Measurements of intensity using the Modified Mercalli scale, are composed of 12 increasing levels that range from imperceptible shaking to catastrophic destruction, usually designated by Roman numerals, which stresses their semi-quantitative nature.
