HR: 0830h
AN: NS41B-05    [Abstracts]
TI: Data-driven models for near-surface geophysical studies
AU: * Prasad, M
EM: mprasad@mines.edu
AF: Colorado School of Mines, 1500 Illinois Street, Golden, CO 80401 United States
AU: Zimmer, M
EM: mzimmer@nrlssc.navy.mil
AF: Naval Research Laboratory, NRC Postdoctoral Research Associate 1005 Balch Blvd., Stennis Space Center, MS 39529-5004 United States
AU: Vega, S
EM: svega@rsmas.miami.edu
AF: University of Miami, Marine Geology and Geophysics RSMAS, 4600 Rickenbacker Causeway, Miami, FL 33149 United States
AB: Knowledge about porosity and permeability is essential to evaluate fluid content, contamination, and remediation success in soils. Information about subsurface formations is generally gathered at different scales, which vary in resolution, spatial coverage, and number of parameters measured. There is a need to up- or downscale to increase reliability of prediction. This paper will show applications of rock physics and experimental data to calibrate observations made in the near-surface geophysics surveys. We will present current data available and then show various possible applications of using this data and unconsolidated sediment models to understand soil properties. Experiments on sediments in controlled environment can allow us to develop empirical and theoretical trends and show the different petrophyical controls on near-surface geophysical signatures in sediments. We will show results of variations in, for example, porosity, cementation, pore-filling, and compaction, and how rock physics analyses can be implemented to diagnose unknown data sets, calibrate seismic data, for pressure prediction, and for modeling response of clay-sand mixtures.
DE: 5100 PHYSICAL PROPERTIES OF ROCKS
DE: 5102 Acoustic properties
DE: 5144 Wave attenuation
SC: Near-Surface Geophysics [NS]
MN: 2005 Joint Assembly