Wave propagation modeling capabilities at LLNL: Applications to regional discrimination
A primary goal of our research at LLNL has been to develop an assemblage of the most promising numerical techniques for simulating regional wave propagation through complex media. These numerical capabilities will be an integral part of our approach to regional characterization in both the Middle East and North Africa. In this paper, we focus on demonstrating and validating our current modeling capabilities, which include reflectivity, boundary integral, finite-difference, along with hybrid forms of these approaches. We use the boundary integral and finite-difference techniques to provide better understanding of regional discriminant variability along three arrays which were deployed to record regional signals from the NPE. These arrays extend west, northwest, and east from NTS, with the western line coinciding with one of three Southern Sierra Continental Dynamics (SSCD) refraction experiment profiles. This gives detailed coverage of regional phases along one of the most well constrained crustal profiles in the western United States. Phase amplitudes and the resulting discriminant variability are presented. This ``ground truth`` dataset will then act as the basis for the future validation of our numerical codes concurrent with our regionalization of the Middle East and North Africa.
- Research Organization:
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- W-7405-ENG-48
- OSTI ID:
- 100404
- Report Number(s):
- UCRL-JC-121748; CONF-950954-6; ON: DE95016600
- Resource Relation:
- Conference: 17. annual electrical overstress/electrostatic discharge symposium, Phoenix, AZ (United States), 11-14 Sep 1995; Other Information: PBD: Jul 1995
- Country of Publication:
- United States
- Language:
- English
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