# What are the similarities and differences between the Richter and moment magnitude scales?

## What are the similarities and differences between the Richter and moment magnitude scales?

Moment magnitude estimates are about the same as Richter magnitudes for small to large earthquakes. But only the moment magnitude scale is capable of measuring M8 (read “magnitude 8”) and greater events accurately. Magnitudes are based on a logarithmic scale (base 10).

What are the differences and similarities between magnitude and intensity?

Magnitude is a measure of earthquake size and remains unchanged with distance from the earthquake. Intensity, however, describes the degree of shaking caused by an earthquake at a given place and decreases with distance from the earthquake epicentre.

What do Mercalli and Richter scales provide and measure?

Learn how the Richter scale measures magnitude and the Mercalli scale measures intensity of an earthquake. The Richter scale measures the magnitude of earthquakes, and the Mercalli scale measures… Encyclopædia Britannica, Inc.

### What is the description of a 5.0 5.9 magnitude in a Richter scale?

Richter scale of earthquake magnitude

magnitude level category effects
5.0–5.9 moderate some damage to weak structures
6.0–6.9 strong moderate damage in populated areas
7.0–7.9 major serious damage over large areas; loss of life
8.0 and higher great severe destruction and loss of life over large areas

What intensity is completely devastating?

PHIVOLCS Earthquake Intensity Scale (PEIS)

Intensity Scale Shaking
VII Destructive
VIII Very Destructive
IX Devastating
X Completely Devastating

What is the difference between magnitude and intensity scale?

The Richter Magnitude Scale measures the amount of seismic energy released by an earthquake. Intensity is how well you receive the signal, which can depend on your distance from the energy source, the local conditions, and the pathway the signal has to take to reach you.

## Why are there two system for evaluating earthquake?

There are two main ways to measure earthquakes. The first of these is an estimate of the energy released, and the value is referred to as magnitude. The other way of assessing the impact of an earthquake is to assess what people felt and how much damage was done.

What are the different values on the Richter scale?

The range of the Richter scale is between 0 and 10. However, an earthquake can measure above 10.0, which is then called an epic earthquake. Given below is a table, that helps you understand the magnitude of an earthquake, and the kind of damage it can cause to life and property.

What is meant by Richter scale?

Richter scale. Quantitative measure of earthquake-strength (magnitude) that indicates the seismic energy released by an earthquake at its epicenter (measured from a distance of 100 miles) on a 1 to 10 scale. It is a logarithmic scale: an increase of 1.0 in measurement corresponds to an increase of 10 times in the magnitude.

### What kind of scale is the Richter scale based on?

The Richter magnitude is based on a scale of 10, with the magnitudes starting from a less than 2.0 reading to a 10+ reading, though the latter has never been recorded. The readings help to arrive at the level of magnitude of an earthquake, from micro and light to strong and great, though after taking into account the earthquake intensity as well.

Is the Richter scale an open-ended scale?

The Richter scale is an open-ended scale but the strength of rocks limit the upper magnitude of an earthquake to slightly less than 9.0. After the 1960 Chile Earthquake and the 1964 Alaska Earthquake the moment magnitude scale was developed to study large earthquakes.