Surface-wave-based inversions of shallow seismic structure

Gregg D. Larson; Mubashir Alam; James S. Martin; Waymond R. Scott Jr.; James H. McClellan; George S. McCall II; Pelham D. Norville; Benjamin Declety

doi:10.1117/12.487474

11 September 2003 Surface-wave-based inversions of shallow seismic structure

Gregg D. Larson, Mubashir Alam, James S. Martin, Waymond R. Scott Jr., James H. McClellan, George S. McCall II, Pelham D. Norville, Benjamin Declety

Author Affiliations +

Proceedings Volume 5089, Detection and Remediation Technologies for Mines and Minelike Targets VIII; (2003) https://doi.org/10.1117/12.487474
Event: AeroSense 2003, 2003, Orlando, Florida, United States

Abstract

The inversion of surface wave propagation measurements to determine soil properties within a few meters of the surface is being investigated to facilitate the development and simulation of seismic landmine detection techniques. Knowledge of soil types, soil material properties, inhomogeneities, stratification, water content, and nonlinear mechanisms in both the propagation path and the source-to-surface coupling can be used to validate and improve both numerical and experimental models. The determination of the material properties at field test sites is crucial for the continued development of numerical models, which have shown a strong dependency on the assumed soil parameter variations in elastic moduli and density as a function of depth. Field experiments have been conducted at several test sites using both surface and sub-surface sensors to measure the propagation of elastic waves in situ with minimal disruption of the existing soil structure. Material properties have been determined from inversion of surface wave measurements using existing spectral analysis of surface waves (SASW) techniques. While SASW techniques are computer-intensive, they do not disturb the existing soil structure during testing as do borehole and trench techniques. Experimental data have been compared to results from 3-D finite-difference time-domain (FDTD) modeling of similar soil structures and measurement methods.

Citation Download Citation

Gregg D. Larson, Mubashir Alam, James S. Martin, Waymond R. Scott Jr., James H. McClellan, George S. McCall II, Pelham D. Norville, and Benjamin Declety "Surface-wave-based inversions of shallow seismic structure", Proc. SPIE 5089, Detection and Remediation Technologies for Mines and Minelike Targets VIII, (11 September 2003); https://doi.org/10.1117/12.487474

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available