Accession Number:

ADA222810

Title:

Effects of Small-Scale Heterogeneities on Regional Propagation

Descriptive Note:

Technical rept.

Corporate Author:

MITRE CORP MCLEAN VA JASON PROGRAM OFFICE

Personal Author(s):

Report Date:

1990-01-21

Pagination or Media Count:

27.0

Abstract:

Regional seismic-wave propagation at frequencies above 1 Hz is described in terms of ray theory, and the effects of small-scale heterogeneities are described statistically by means of the modern theory of wave propagation through random media. Observed features of regional propagation, such as the complexity of waveforms over tens or hundreds of seconds, the sensitivity of this complexity to the location of source or receiver, and the spread in arrival angles of waves at a receiving array, are explained by this propagation model. jhd

Subject Categories:

  • Seismology

Distribution Statement:

APPROVED FOR PUBLIC RELEASE