Accession Number:

ADA230519

Title:

Proceedings of the Annual DARPA/AFGL (8th) Seismic Research Symposium Held in Colorado Springs, Colorado on 6-8 May 1986

Descriptive Note:

Environmental research papers

Corporate Author:

AIR FORCE SYSTEMS COMMAND HANSCOM AFB MA GEOPHYSICS LAB

Personal Author(s):

• Lewkowicz, James F.
• McPhetres, Jeanne M.

Report Date:

1990-12-03

Pagination or Media Count:

233.0

Abstract:

Partial contents Resolution of source functions and structure from near-field data Seismic wave propagation in a laterally heterogeneous crust Modeling Lg propagation across crust-mantle transition zones and evaluating surface wave path corrections Geophysical investigations at Pahute Mesa, NV Regional studies with broadband data Determination of source function for a seismic swarm Damage mechanics of brittle solids in compression Sources spectra determination for a recent seismic crisis in the east part of France Focussing and defocussing of body waves by three-dimensional structure in source and receiver regions Regional event detection using the NORESS array Nature of teleseismic P coda at NORESS Propagation characteristics of regional phases and NORESS real time processing performance Wavefield decomposition using ML- probabilities in modelling single-site 3-component records -- Practical applications on locations of events and scattering Observational and theoretical studies of regional wave propagation Source characterization and yield estimation from Lg and P-Coda measurements Tectonic release signature at regional distances Lg magnitudes of selected Shagan River, East Kazakhastan explosions Analysis of teleseismic P wave amplitude and coda variations for underground explosions Comparison of matched filters to time-variable filters for amplitude determination of normal modes in surface wave analysis.

Descriptors:

• *FUNCTIONS
• SOURCES
• SCATTERING
• SURFACE ANALYSIS
• SYMPOSIA
• SURFACE WAVES
• DETECTION
• DAMAGE
• THEORY
• RESOLUTION
• STRUCTURES
• PATHS
• EXPLOSIONS
• UNDERGROUND EXPLOSIONS
• SEISMIC DETECTION
• REGIONS
• ESTIMATES
• TIME
• VARIATIONS
• MECHANICS
• THREE DIMENSIONAL
• SPECTRA
• WAVE PROPAGATION
• LONG RANGE(DISTANCE)
• RECEIVERS
• BROADBAND
• FRANCE
• YIELD
• RELEASE
• SEISMIC WAVES
• SIGNATURES
• HETEROGENEITY
• FILTERS
• GEOPHYSICS
• NORWAY
• AMPLITUDE
• MATCHED FILTERS
• DECOMPOSITION
• DETERMINATION
• NEAR FIELD
• SEISMOLOGY
• CORRECTIONS
• SEISMIC ARRAYS
• TECTONICS
• PROPAGATION

Subject Categories:

• Seismology
• Seismic Detection and Detectors

Distribution Statement:

APPROVED FOR PUBLIC RELEASE