The Mercalli scale is a seismic scale used to measure the intensity of an earthquake. The measurement is based on observations and experiences, and it is currently measured on a scale of 12 degrees of intensity, indicated by Roman numerals I through XII.
The original Mercalli scale was formulated in the late 1800s and early 1900s as a 10-degree scale. It was later modified several times, and its current form is known as the Modified Mercalli scale. The lower end of the scale is based on reports from people regarding the intensity of the effects they experienced, and the data is collected to form maps of intensity. The upper levels are generally based on observations of destruction caused by an earthquake, such as structural damage. The Mercalli scale differs from the Richter scale, which measures the magnitude of earthquakes.Learn More
The Mercalli scale is a method of measuring the strength of an earthquake. This scale uses definitions based on the experiences of people in areas affected by earthquakes.Full Answer >
The Richter scale is used to quantitatively measure the magnitude of an earthquake. This tool was devised by the seismologist Charles F. Richter in 1935.Full Answer >
A diagram that uses the Richter scale is used to measure the magnitude of an earthquake. When an earthquake takes place, a device called a seismograph records the earthquake's vibration, and multiple seismographs can form a coherent picture. From the resulting diagram, the earthquake's force can be determined.Full Answer >
The scale used to measure the severity of earthquakes is called the Richter scale. The Richter scale was invented by an American seismologist named Charles Richter at the California Institute of Technology in 1935.Full Answer >