TY  - JOUR
PY  - 2017//
TI  - Real-time 3-D space numerical shake prediction for earthquake early warning
JO  - Earthquake science
A1  - Wang, Tianyun
A1  - Jin, Xing
A1  - Huang, Yandan
A1  - Wei, Yongxiang
SP  - 269
EP  - 281
VL  - 30
IS  - 5-6
N2  - In earthquake early warning systems, real-time shake prediction through wave propagation simulation is a promising approach. Compared with traditional methods, it does not suffer from the inaccurate estimation of source parameters. For computation efficiency, wave direction is assumed to propagate on the 2-D surface of the earth in these methods. In fact, since the seismic wave propagates in the 3-D sphere of the earth, the 2-D space modeling of wave direction results in inaccurate wave estimation. In this paper, we propose a 3-D space numerical shake prediction method, which simulates the wave propagation in 3-D space using radiative transfer theory, and incorporate data assimilation technique to estimate the distribution of wave energy. 2011 Tohoku earthquake is studied as an example to show the validity of the proposed model. 2-D space model and 3-D space model are compared in this article, and the prediction results show that numerical shake prediction based on 3-D space model can estimate the real-time ground motion precisely, and overprediction is alleviated when using 3-D space model.<p />  <p>Language: en</p>
LA  - en
SN  - 1674-4519
UR  - http://dx.doi.org/10.1007/s11589-017-0196-1
ID  - ref1
ER  -