Integration of Infrasound Propagation Models and Near-Real-Time Atmospheric Characterizations
Abstract
The analysis tool kit InfraMAP (Infrasound Modeling of Atmospheric Propagation) has been upgraded to offer new options for specifying the propagation environment. Near-real-time atmospheric updates, such as the output from numerical weather prediction models, supplement the baseline climatological characterization of temperature, wind and air composition. InfraMAP integrates advanced infrasound propagation models (ray-tracing, parabolic equation, normal mode) and environmental representations. It also incorporates algorithms for assessing propagation variability and for localizing infrasound sources based on both observations and model calculations. The component models have been integrated to allow for user-friendly model execution and data visualization. Models can be applied to predict propagation characteristics necessary for estimation of travel times, bearings, and amplitudes from potential event locations worldwide. InfraMAP has been used to model long-range propagation of infrasound originating from the space shuttle, bolides and other sources. Model predictions of infrasound arrival times and azimuths resulting from use of various environmental characterizations are compared with observed data.
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 01, 2004
- Accession Number
- ADA430625
Entities
People
- David E. Norris
- Robert G. Gibson
Organizations
- BBN Technologies