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NARROW
GeoRef Subject
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all geography including DSDP/ODP Sites and Legs
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Africa
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East Africa
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Tanzania (1)
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United States
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Massachusetts
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Barnstable County Massachusetts
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Cape Cod (1)
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Nantucket County Massachusetts (1)
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Minnesota
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Anoka County Minnesota (1)
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New Jersey
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Mercer County New Jersey (1)
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geologic age
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Mesozoic
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Triassic
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Upper Triassic
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Lockatong Formation (1)
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Primary terms
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Africa
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East Africa
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Tanzania (1)
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data processing (1)
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faults (1)
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geophysical methods (7)
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ground water (2)
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Mesozoic
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Triassic
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Upper Triassic
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Lockatong Formation (1)
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pollution (2)
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sedimentary rocks (1)
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soils
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laterites (1)
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United States
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Massachusetts
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Barnstable County Massachusetts
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Cape Cod (1)
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Nantucket County Massachusetts (1)
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Minnesota
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Anoka County Minnesota (1)
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New Jersey
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Mercer County New Jersey (1)
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well-logging (1)
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rock formations
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Stockton Formation (1)
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sedimentary rocks
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sedimentary rocks (1)
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soils
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soils
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laterites (1)
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Inversion of induced polarization-affected towed-transient electromagnetic data in a lateritic regolith geology: A case study from western Tanzania
Investigation of Scale-Dependent Groundwater/Surface-water Exchange in Rivers by Gradient Self-Potential Logging: Numerical Modeling and Field Experiments
Geophysical mapping of plume discharge to surface water at a crude oil spill site: Inversion versus machine learning
Introduction to this special section: Unmanned autonomous vehicles
Introduction to this special section: Hydrogeophysics
Introduction to special section: Near-surface imaging and interpretation
Monitoring engineered remediation with borehole radar
Delineating a shallow fault zone and dipping bedrock strata using multichannal analysis of surface waves with a land streamer
Introduction Crosshole electromagnetic techniques have been studied for detection and imaging subsurface anomalies. The use of higher frequency, i.e., radar, has high resolution, and has been used for imaging anomalies having high contrasts with the host rock. For example, Litle et al. (1979) and Lee et al. (1989) used crosshole radar to detect voids or tunnels, Lager and Lytle (1977) used tomography to visualize trace flow, and Park et al. (1998) used tomography for imaging voids. Borehole radar tomographic analysis has been applied to various other fields (Olsson et al., 1992; Mathisen et al., 1995; Lane et al., 1996; Wright et al., 1998). In most cases, crosshole tomography enables us to characterize subsurface media between two boreholes very well.