What Is Earthquake How Is It Measured What Is An Example Of Earthquake

The richter scale measures the magnitude of an earthquake how powerful it is.

Ground turkey yellow pepper recipe earthquake map seattle. On the mercalli intensity scale this is can be anywhere from a i to a iv. Because the richter scale is logarithmic a 50 earthquake measures 10 times the shaking amplitude than one that measures 40 for example. Minor earthquakes are measured at between 2 and 39 on the magnitude scale.

Let us see what earthquake is its causes and effects how earthquake is measured and also types of earthquakesit is one of the main natural disasters. A second way earthquakes are measured is by their intensity. Earthquake intensity measurement is an on the ground description.

They are not known to cause damage to buildings or other infrastructure systems. Earthquake magnitude is a measure of the size or amplitude of the seismic waves generated by an earthquake source and recorded by seismographs. The most common method of describing the size of an earthquake is the richter magnitude scale ml.

These earthquakes may be felt by some individuals though not by the majority of the population. Tsunami in the open ocean the distance between wave crests can surpass 100 kilometers 62 mi and the wave periods can vary from five minutes to one hour. The mercalli scale the mercalli scale measures the intensity of an earthquake by quantifying the effects of an earthquake on the earths surface.

The types and nature of these waves are described in the section seismic wavesbecause the size of earthquakes varies enormously it is necessary for purposes of comparison to compress the range of wave amplitudes. This takes the logarithm of the ground displacement as measured by a seismograph and applies a correction which varies with the distance from the earthquake to the seismograph. For example in the 1964 alaska earthquake soil liquefaction caused many buildings to sink into the ground eventually collapsing upon themselves.

Earthquake size as measured by the richter scale is a well known but not well understood concept. Intensity measurements will differ depending on each locations nearness to the epicenter. Forecasting earthquakes are a bit difficult but warning systems have been developed.

Earthquakes until recently have been measured on the richter scale. The energy released from earthquakes fracture the surface of the earth.