19. Integrated Hydrostratigraphic Interpretation of 3D Seismic-Reflection and Multifold Pseudo-3D GPR Data

Citation data:

Advances in Near-surface Seismology and Ground-penetrating Radar, Page: 313-326

Publication Year:
2010
Usage 34
Abstract Views 34
Citations 1
Citation Indexes 1
Repository URL:
https://works.bepress.com/john_bradford/43; https://scholarworks.boisestate.edu/cgiss_facpubs/169
DOI:
10.1190/1.9781560802259.ch19
Author(s):
Bradford, John H.
Publisher(s):
Society of Exploration Geophysicists
Tags:
Earth Sciences; Geophysics and Seismology
book chapter description
To map the 3D distribution of major hydrologic boundaries in a shallow aquifer near Boise, Idaho, 3D seismic-reflection data and multifold, pseudo-3D ground-penetrating- radar (GPR) data were analyzed. The seismic data covered a 75-X 70-m area and imaged horizons from 18 to 150 m deep. The 10-fold, 50-MHz GPR data were acquired on a 20- X 30-m grid using a multichannel GPR system and offsets ranging from 2 m to 20 m. By correlating the well-resolved GPR depth image with a clay-aquitard seismic reflection, the seismic-velocity model was improved substantially and the accuracy of the final interpretation was improved. The resulting clay-aquitard surface differed by 0.12+0.46 m from the depth to clay measured in wells. By integrating the interpretations of the GPR and seismic data, a 3D map of major hydrostratigraphic boundaries was produced.