Strong:
Felt by all; many frightened and run outdoors, walk unsteadily. Windows, dishes, glassware broken; books fall off shelves; some heavy furniture moved or overturned; a few instances of fallen plaster. Damage slight.
The wave of an earthquake, known as seismic waves, travel through the Earth's crust and cause the ground to shake. These waves can result in damage to buildings, infrastructure, and the environment. They are key to understanding the intensity and impact of an earthquake.
The 2011 earthquake in Tohoku, Japan measured at a Mercalli intensity of VII (Very strong). The Earthquake had a magnitude of 9.0 and led to widespread damage and casualties.
The Phivolcs Earthquake Intensity Scale is used to measure the intensity of earthquakes in the Philippines, ranging from Intensity I (not felt) to Intensity X (damaging). It is a subjective scale based on observed effects on people, buildings, and the environment rather than on the magnitude of the earthquake itself.
differences in earthquake intensity; differences in demographics at/near the earthquake site
An intensity 4 earthquake on the Mercalli Intensity Scale is described as "light." At this level, people may feel the shaking indoors, but most will not be alarmed. Some objects may be knocked over, and hanging items might sway, but there is generally little to no damage to buildings. It is noticeable but often not strong enough to cause significant concern.
Because the force of the earthquake is strong.
An intensity 5 earthquake is considered moderate and can cause shaking that is felt by many people, potentially causing slight damage to buildings. In comparison, an intensity 7 earthquake is considered major and can cause widespread damage, including collapse of buildings and infrastructure. The shaking intensity and potential impact on structures and people are significantly higher in an intensity 7 earthquake compared to intensity 5.
The wave of an earthquake, known as seismic waves, travel through the Earth's crust and cause the ground to shake. These waves can result in damage to buildings, infrastructure, and the environment. They are key to understanding the intensity and impact of an earthquake.
The seismic scale that measures the intensity of earthquake damage is called the Mercalli intensity scale. This scale measures the effect an earthquake has on people and surroundings.
A magnitude of 8.0 earthquake could be classified as a low intensity by descriptions of damage to buildings and terrain. The intensity is often greatest near the earthquakes epicenter.
The 2011 earthquake in Tohoku, Japan measured at a Mercalli intensity of VII (Very strong). The Earthquake had a magnitude of 9.0 and led to widespread damage and casualties.
it is low...the lower the number the worse the earthquake.
A magnitude of 8.0 earthquake could be classified as a low intensity by descriptions of damage to buildings and terrain. The intensity is often greatest near the earthquakes epicenter.
The Phivolcs Earthquake Intensity Scale is used to measure the intensity of earthquakes in the Philippines, ranging from Intensity I (not felt) to Intensity X (damaging). It is a subjective scale based on observed effects on people, buildings, and the environment rather than on the magnitude of the earthquake itself.
According to the US Geological Survey, the 1906 earthquake reached a maximum intensity of 9 on the Modified Mercalli Intensity scale.
differences in earthquake intensity; differences in demographics at/near the earthquake site
It had an intensity of 8.1 on the Righter magnitude scale. As a means of comparison, it had an intensity of roughly 100 times than that of the 1989 Loma Prieta earthquake.