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Seismic Moment Magnitude and Equivalent Energy

Seismic moment is a quantity used by seismologists to measure the size of an earthquake. It is directly proportional to the energy released.

The equivalent energy and seismic moment are proportional to 10 to the power of 3/2 of the seismic moment magnitude.

Formula

{QuantityVariable["E", "Energy"] == 10^(4.8 + 1.5*QuantityVariable[Subscript["M", "w"], "Unitless"])*Quantity[1, "Joules"], QuantityVariable[Subscript["M", "0"], "Energy"] == 10^(9.1 + 1.5*QuantityVariable[Subscript["M", "w"], "Unitless"])*Quantity[1, "Joules"]}

symbol description physical quantity
E equivalent energy "Energy"
Mw seismic moment magnitude "Unitless"
M0 seismic moment "Energy"

Forms

Examples

Get the resource:

In[1]:=
ResourceObject["Seismic Moment Magnitude and Equivalent Energy"]
Out[1]=

Get the formula:

In[2]:=
FormulaData[ ResourceObject["Seismic Moment Magnitude and Equivalent Energy"]]
Out[2]=

Use some values:

In[3]:=
FormulaData[ ResourceObject[ "Seismic Moment Magnitude and Equivalent Energy"], \ {QuantityVariable["E","Energy"] -> Quantity[2, "Terajoules"]}]
Out[3]=

Source Metadata

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