Earthquake Rupture Length

The rupture length is the length of an earthquake rupture, which is a slip, whether on the surface or beneath, in the Earth's crust that results in a fault and displacement of some sort.

The surface rupture length is proportional to ten to the power of 0.69 times the seismic moment magnitude. The subsurface rupture length is proportional to ten to the power of 0.5 times the seismic moment magnitude.

Formula

${QuantityVariable["SRL", "Length"] == 10^(-3.22 + 0.69*QuantityVariable[Subscript["M", "w"], "Unitless"])*Quantity[1, "Kilometers"], QuantityVariable["RLD", "Length"] == 10^(-1.88 + 0.5*QuantityVariable[Subscript["M", "w"], "Unitless"])*Quantity[1, "Kilometers"]}$