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Environmental geophysics investigates the geophysical response to natural and anthropogenic materials, processes, and alterations, which impact human health and ecosystems within the near surface of the earth. This presentation will cover biogeophysics, geophysical monitoring an...

This presentation to the ROCS-Net group provides an introduction to environmental geophysics.  Environmental geophysics is defined with applications.  Several examples of research results are presented including some of the latest innovations in EPA's environmental geop...

This presentation provides and overview of environmental geophysics to EPA’s Groundwater Forum.  Geophysical methods most applicable to environmental applications are introduced.  Examples of several applied geophysics research sites are presented which include ma...

Geophysical methods can provide 3D, spatially extensive estimates of soil moisture.  However, point-to-point comparisons of geophysical properties to measured moisture data are frequently unsatisfactory, resulting in geophysics being used for qualitative purposes only. ...

Greetings FastTIMES readers and welcome to this Special Issue on Geophysics Applied to Contaminant Studies. Our planet and our physical, biological, and societal dynamics are undergoing a significant recalibration to hopefully a more peaceful, healthy, equitable, just, and susta...

This special CD was compiled from the proceedings of the annual Symposium for the Application of Geophysics to Environmental and Engineering Problems (SAGEEP) hosted by the Environmental and Engineering Geophysical Society (EEGS). For a history of EEGS and information on the Soci...

Geophysical methods have shown great success contributing to finding underground objects, mapping contaminant plumes, monitoring remediation, developing high-resolution conceptual site models, and understanding site hydrogeologic dynamics such as groundwater – surface water...

Non-invasive or minimally invasive near surface geophysics can yield three-dimensional maps of subsurface physical properties and aid high resolution site characterization. This presentation will demonstrate the application of geophysical methods for various site objectives such...

This product provides assistance to project managers, remedial project managers, stakeholders, and anyone interested in on-site investigations or environmental geophysics. The APM is the beta version of the new U.S. EPA Environmental Geophysics Web Site which includes the Geophys...

Several questions and uncertainties hinder widespread applications of geophysical methods for environmental and groundwater investigations. This contribution identifies three main impediments to the application of geophysics for environmental and groundwater investigations and pr...

Several questions and uncertainties hinder widespread applications of geophysical methods for environmental and groundwater investigations. This contribution identifies three main impediments to the application of geophysics for environmental and groundwater investigations and pr...

Riparian meadow complexes found in mountain ranges of the Central Great Basin physiographic region (western United States) are of interest to researchers as they contain significant biodiversity relative to the surrounding basin areas. These meadow complexes are currently degradi...

Methods to monitor the soil moisture distribution in landfills using non-invasive methods are desirable. Certain near-surface geophysical tools indirectly sense soil moisture variations, but these methods (1) require calibration to link interpreted data with soil moisture, and (2...

Inadequate site characterization and a lack of knowledge of subsurface contaminant distributions (particularly Non-Aqueous Phase Liquids [NAPLs]) hinder our ability to make good decisions on remediation options and to conduct adequate cleanup efforts at contaminated sites. Non-i...

The perspectives, information and conclusions conveyed in research project abstracts, progress reports, final reports, journal abstracts and journal publications convey the viewpoints of the principal investigator and may not represent the views and policies of ORD and EPA. Concl...

The perspectives, information and conclusions conveyed in research project abstracts, progress reports, final reports, journal abstracts and journal publications convey the viewpoints of the principal investigator and may not represent the views and policies of ORD and EPA. Concl...

The decommissioned Wurtsmith Air Force Base former Fire Training Cell (FT-02) facility has been the focus of several geophysical investigations. After several decades of fire training exercises, significant amounts of hydrocarbons and some solvents seeped into the subsurface cont...

The decommissioned Wurtsmith Air Force Base former Fire Training Cell (FT-02) facility has been the focus of several geophysical investigations. After several decades of fire training exercises, significant amounts of hydrocarbons and some solvents seeped into the Subsurface cont...

We propose a 2D seismic time-lapse inversion approach to image the evolution of seismic velocities over time and space. The forward modeling is based on solving the eikonal equation using a second-order fast marching method. The wave-paths are represented by Fresnel volumes rathe...

Several time-domain electromagnetic (EM) datasets were collected using a FloaTEM system (Aarhus GeoInstruments, ApS) along the Yaquina River to map the spatial distribution of subsurface freshwater and saltwater in the vicinity of Newport, Oregon.  Understanding coastal subs...

Airborne fine particulate matter across the United States is monitored by different networks, the three prevalent ones presently being the Clean Air Status and Trend Network (CASTNet), the Interagency Monitoring of PROtected Visual Environment Network (IMPROVE) and the Speciati...

We present the results of long term (500 days) measurements of the bulk conductivity in a field and laboratory experiment. Our objective was to determine the rate of change in bulk conductivity and whether this rate of change correlated with the petroleum hydrocarbon degradation...

Ground Penetrating Radar (GPR) has a wide range of applications, from geologic mapping to concrete inspection. A recently emerging GPR application is deployment in biological investigations as a non-invasive technique. Geophysical mapping of features such as tree roots and turtle...

A direct push resistivity method was evaluated as a complementary screening tool to provide rapid in-situ contaminant detection to aid in better defining locations for drilling, sampling, and monitoring well installation at hazardous waste sites. Nine continuous direct push resi...

It is estimated there are more than 500,000 abandoned mines in the United States, and many of the highly toxic and dangerous mines are listed on the Superfund National Priority List (NPL). In EPA Region 8; mines, smelters, and mills make up more than 50% of the NPL sites, and EPA...