Table 1 Data for the 2011 Tohoku-Oki earthquake
From: Dynamics of a fault model with two mechanically different regions
μ | 40 GPa | Rigidity of the lithosphere |
v | \(8\hbox { cm} \hbox { a}^{-1}\) | Relative plate velocity |
\({\dot{e}}\) | \(4 \times 10^{-15}\hbox { s}^{-1}\) | Tangential strain rate on the fault |
\(\delta\) | \(20^\circ\) | Average dip angle of the fault |
\(A_1\) | \(6 \times 10^4\hbox { km}^2\) | Area of the asperity |
\(A_2\) | \(6 \times 10^4\hbox { km}^2\) | Area of the weak region |
a | 150 km | Distance between the centres of the two regions |
\(m_{\mathrm{s}}\) | \(3.5 \times 10^{22}\) N m | Seismic moment of the event |
\(u_{\mathrm{s}}\) | 15Â m | Average slip of the asperity |
\(t_{\mathrm{s}}\) | 80Â s | Duration of seismic slip |
\(t_{\mathrm{a}}\) | 15Â days | Assumed duration of afterslip |