What are the different intensity of earthquake?
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What are the different intensity of earthquake?
PHIVOLCS Earthquake Intensity Scale (PEIS)
| Intensity Scale | Shaking |
|---|---|
| I | Scarcely Perceptible |
| II | Slightly Felt |
| III | Weak |
| IV | Moderately Strong |
What are the characteristics of an earthquake?
Causes & characteristics of Earthquakes. Earthquakes are vibrations in the Earth’s crust that cause shaking at the surface. They are highly unpredictable and often occur suddenly without warning. As yet, we have no way of fully and accurately predicting when an earthquake will occur.
What 5 things determine the intensity of an earthquake?
When an earthquake strikes, the intensity of earthquake shaking determines the severity of damage. In turn, the main factors affecting earthquake shaking intensity are earthquake depth, proximity to the fault, the underlying soil, and building characteristics—particularly height.
What level of measurement is intensity of earthquake?
Mercalli scale
Intensity scales. The Richter scale measures the magnitude of earthquakes, and the Mercalli scale measures their intensity. The violence of seismic shaking varies considerably over a single affected area.
What is the main difference between intensity and magnitude?
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 are earthquake waves describe their types and characteristics?
There are several different kinds of seismic waves, and they all move in different ways. The two main types of waves are body waves and surface waves. Body waves can travel through the Earth’s inner layers, but surface waves can only move along the surface of the planet like ripples on water.
What are the factors on which the intensity of an earthquake depends?
Some factors that affect intensity are the distance away from the epicenter, the depth of the earthquake, the population density of the area affected by the earthquake, the local geology of the are, the type of building construction in the area, and the duration of the shaking.
Why is it important to know the intensity of an earthquake?
Earthquake Intensity measurement is an on-the-ground description. The measurement explains the severity of earthquake shaking and its effects on people and their environment. Intensity measurements will differ depending on each location’s nearness to the epicenter.
How does earthquake magnitude differ from intensity?