Science & Technology
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Dielectric Permittivity
dielectric constant geophysical property
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Borehole Optical Televiewer (OTV)
Borehole Optical Televiewer
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Borehole Acoustic Televiewer (ATV)
Borehole Acoustic Televiewer
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Seismic Velocities
If the ground is stressed by an explosion or a hammer blow, it generates three fundamental types of elastic waves: P (primary, push-pull) waves; S (secondary, shear) waves, and surface waves.
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Seismic Reflectivity
Reflections in seismic data result from contrasts in the seismic impedance (ρV) across a boundary
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Porosity
Porosity, saturation, and density are related as a function of porosity Φ.
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Magnetic Susceptibility
Magnetic susceptibility is a measure of the ability of a material to be magnetized.
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Density
Density, s, is the intrinsic unit mass of a material, defined as the mass of one cubic meter with units of kilograms per cubic meter.
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Geophysical Properties
To develop a thorough understanding of the theory and science of geophysical methods requires an understanding of the geophysical properties involved in the methodology.
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Surface Geophysical Methods
This section covers most of the commonly used surface geophysical methods.
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Electrical Methods
Electrical geophysical prospecting methods detect the surface effects produced by electric current flow in the ground.
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Foresight
An introduction to the use of strategic foresight for anticipating emerging risks and opportunities in coastal areas.
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The External Costs of Industrial Chemical Accidents: A Nationwide Property Value Study
This is a working paper titled "The External Costs of Industrial Chemical Accidents: A Nationwide Property Value Study "
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Competency and Proficiency Testing
Field Branches Quality System and Technical Procedures
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2022 Science Matters Stories
A list of all 2022 Science Matters Stories.
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Design and Installation of Monitoring Wells
Design and Installation of Monitoring Wells
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Field Equipment Center Management
Field Branches Quality System and Technical Procedures
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StreamCat Dataset - ReadMe
The Stream-Catchment (StreamCat) dataset is an extensive collection of landscape metrics for 2.6 million streams and associated catchments within the conterminous U.S.
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Adverse Outcome Pathways
More information about the Chemical Safety for Sustainability Research Program's Adverse Outcome Pathway research area.
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How do I determine what SCCs have changed between inventory years?
These are available in the EIS (Reporting Code table) or public website: https://sor-scc-api.epa.gov/sccwebservices/sccsearch/ Filter on “last inventory year” to remove SCCs no longer active. If this column has a date in it, then the SCC has been retired as of that date. The “last updated date” (column J) indicates when…