Joint inversion of geophysical data for site characterization and restoration monitoring. FY97 annual progress report for EMSP

Berge, Patricia A.; Berryman, James G.; Bonner, B.P.; Roberts, Jeffery J.; Wildenschild, D.

doi:10.2172/13570

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2000

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“…This work is part of an on-going environmental geophysics project with the goal of improving underground imaging in the shallow subsurface by developing algorithms relating measured geophysical properties to lithology, porosity, and fluid-flow properties for unconsolidated materials at pressures appropriate for the top 10 m of the subsurface (Berge et al, 1998).…”

Section: Introductionmentioning

confidence: 99%

Laboratory Velocity Measurements Used For Recovering Soil Distributions From Field Seismic Data

Berge¹,

Bertete‐Aguirre²

2000

13th EEGS Symposium on the Application of Geophysics to Engineering and Environmental Problems

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Recent advances in field methods make it possible to obtain high quality compressional (P) and shear (S) velocity data for the shallow subsurface. Environmental and engineering problems require new methods for interpreting the velocity data in terms of sub-surface soil distribution. Recent advances in laboratory measurement techniques have provided high quality velocity data for soils at low pressures that can be used to improve interpretation of field data. We show how laboratory data can be used to infer lithology from field data. We use laboratory ultrasonic velocity measurements from artificial soils made by combining various amounts of sand and peat moss.

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Section: Introductionmentioning

confidence: 99%