原文传递
Soil Attenuation in Seismic Simulations: Implications for Vehicle Tracking
| 题名： | Soil Attenuation in Seismic Simulations: Implications for Vehicle Tracking |
| 作者： | Anderson, Thomas S.;Moran, Mark L.;Greenfield, Roy J.;Ketcham, Stephen A.; |
| 关键词： | SEISMIC WAVES, TRACKED VEHICLES, SIMULATION, TOPOGRAPHY, GROUND MOTION, FINITE DIFFERENCE THEORY, SOILS, WAVE PROPAGATION, ATTENUATION, AMPLITUDE, TIME DOMAIN, SEISMIC SIGNATURES, SEISMOLOGY. |
| 摘要： | This paper describes an implementation of broadband soil attenuation in finite-difference time domain (FDTD) simulations of seismic wave propagation from impulsive sources. We concentrate on the attenuation phenomenon, the computational approach, comparisons with results from non-attenuating soil models, and the impacts on range estimation. Results are based on our three dimensional viscoelastic FDTD code ptop, which allows impulsive and moving vehicle simulations over realistic heterogeneous geologies and surface topographies. Soil attenuation refers to the decay of seismic energy by intrinsic material losses in soil. It can reduce the amplitude of propagating waves and shift the frequency of signal energy, thus affecting vehicle range estimates and seismic signatures. Relative to other attenuation factors, i.e., geometric spreading and scattering, soil attenuation often dominates the total attenuation characteristics of seismic surface waves generated by moving vehicles. |
| 总页数： | 21 |
| 报告类型： | 科技报告 |
相关文献
- Seismic Attenuation Characterization Using Tracked Vehicles
- Measurment and Interpretation of Seismic Attenuation for Hydrocarbon Exploration
- The Effects of Thin, Near-surface Layers on Seismic Signals
- Vehicle Classification Using a Biological Model of Hearing
- Determination of Soil Moduli in Soil-Structure Systems on Highways. Report 1. Surface Waves in Sloping Ground; Technical rept
- Stationary LiDAR for Traffic and Safety Applications--Vehicles Interpretation and Tracking.
检索历史
应用推荐
