Accession Number:

ADA183095

Title:

Average Arrival Time of Wave Pulses Through Continuous Random Media,

Descriptive Note:

Corporate Author:

LA JOLLA INST CA CENTER FOR THE STUDY OF NONLINEAR DYNAMICS

Personal Author(s):

• Codona, Johanan L.
• Creamer, Dennis B.
• Flatte, Stanley M.
• Frehlich, R. G.
• Henyey, Frank S.

Report Date:

1985-07-01

Pagination or Media Count:

4.0

Abstract:

It is pointed out that a continuous random medium can cause an average advance of the arrival time of a pulse. This advance will occur for unsaturated and partially saturated propagation, but not in full saturation which corresponds to the discrete-scatterer case. The effect, which is associated with Fermats principle of least time, can be observed by measuring the difference between intensity-weighted and unweighted average arrival times. Reprints

Descriptors:

• *WAVE PROPAGATION
• ACOUSTIC WAVES
• ARRIVAL
• CONTINUUM MECHANICS
• INTERNAL WAVES
• PROPAGATION
• PULSES
• SATURATION
• TIME

Subject Categories:

• Theoretical Mathematics
• Electricity and Magnetism
• Fluid Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE