Escala de Magnitude de Terremotos
A escala de magnitude similar à escala Richter mede a liberação de energia dos terremotos. Cada incremento de número inteiro representa aproximadamente 31,6 vezes mais energia.
M1
Micro
Micro earthquakes, not felt by humans.
Sentido: Not felt. Detected only by seismographs.
M2
Minor
Minor earthquakes. Felt by few people.
Sentido: Felt by people at rest, on upper floors of tall buildings.
M3
Minor
Often felt, but rarely causes damage.
Sentido: Felt by many indoors; hanging objects swing.
M4
Light
Noticeable shaking of indoor objects. Rarely causes significant damage.
Sentido: Felt by most people; dishes rattle.
Danos: Light
M5
Moderate
Can cause major damage to poorly constructed buildings.
Sentido: Causes damage to poorly built structures. Felt by everyone.
Danos: Moderate to significant
M6
Strong
Destructive in areas up to 160km from epicenter.
Sentido: Destructive to a moderate radius.
Danos: Moderate to severe
M7
Major
Causes serious damage over large areas.
Sentido: Can cause serious damage over wider areas.
Danos: Severe
M8
Great
Can cause severe damage in areas several hundred km wide.
Sentido: Major damage to structures; felt at extreme distances.
Danos: Severe over large areas
M9
Extreme
Devastating over massive areas. Rare once-per-decade events.
Sentido: Total destruction near epicenter; tsunamis generated.
Danos: Catastrophic