Retrieving reflection responses by crosscorrelating transmission responses from deterministic transient sources:...

Area of Science:

• Geophysics
• Seismology
• Acoustics

Background:

• Wave field cross-correlation can retrieve reflection responses between two points.
• Previous methods utilized long recordings of diffuse elastic wave fields.
• Alternative methods used multiple transient sources (P-wave and S-wave) but required extensive data acquisition.

Purpose of the Study:

• To demonstrate reflection retrieval using transient ultrasonic transmission data.
• To investigate the efficacy of cross-correlation with short recordings on heterogeneous samples.
• To present an efficient method for seismic reflection analysis.

Main Methods:

• Cross-correlation of transmission recordings of acoustic or elastic wave fields.
• Utilized transient ultrasonic sources for data acquisition.
• Applied the technique to a heterogeneous granite sample.

Main Results:

• Successfully retrieved reflection responses from transient ultrasonic transmission data.
• Demonstrated the feasibility of using short recordings for reflection retrieval.
• Showcased the application on a complex geological material (granite).

Conclusions:

• Transient wave field cross-correlation is an effective method for reflection retrieval.
• This technique offers an advantage in reduced recording time compared to diffuse wave methods.
• The study validates the approach for analyzing wave propagation in heterogeneous media.