USGS - science for a changing world

USGS Groundwater Information: Branch of Geophysics

*  Home *  Resources *  Research *  Publications *  About *  Contact Us *  Groundwater Information

Recent Regional Training Workshop

OGW BG provides formal and informal geophysical training to USGS offices and staff. This page provides an overview of a recent District training event to give you an idea of the form and content of training you can expect from OGW BG staff. Because training is customized to address specific District needs, each training event is different: contact the Branch to discuss your particular training requirements.


Workshop on the Application of Geophysical & Discrete-Zone Monitoring Methods - Piedmont & Coastal-Plain Aquifers
Northeast Region, Virginia District, April 8-12, 2002

Branch of Geophysics (BG) staff recently collaborated with National Research Program (NRP) personnel to offer  a "Workshop on the Application of Geophysical & Discrete-Zone Monitoring Methods-Piedmont & Coastal-Plain Aquifers."  This subject workshop was sponsored by the Northeastern Region and the Office of Ground Water and was held at the Virginia District office in Richmond, Virginia, on April 8-12, 2002.

This workshop emphasized the integrated use of geophysical and discrete-zone monitoring methods for the geohydrologic characterization of fractured bedrock of the Piedmont and sand-and-gravel deposits of the Coastal Plain. The workshop included a series of introductory lectures; field demonstrations and data collection;  and hands-on, computer-aided analysis of the collected data.

Collection and analysis of such advanced geophysical methods as acoustic and optical televiewer, electromagnetic (EM) and heat-pulse flowmeter, EM induction, gamma- spectral, and full waveform sonic were presented. Calibration, maintenance, and repair of geophysical logging equipment were covered. Use of removable packers for water-level measurement and water-quality sampling from multiple discrete zones in boreholes was also discussed.

 [Photo: Students around EM induction logging tool, discussing calibration methods.]

Dick Hodges (NRP) discusses calibration of electromagnetic (EM) induction borehole logging tool, which measures the bulk apparent conductivity of the formation immediately surrounding the borehole.

 [Photo: USGS instructor explains gamma-spectral logging.]

Carole Johnson (BG) explains borehole gamma-spectral logging, which is used to determine the source of gamma emission (potassium 40, uranium, or thorium).

 [Photo: USGS instructor works with cooperator on new borehole logging computer system.]

Dick Hodges (NRP) works with VA State cooperator on new borehole logging system.

 [Photo: Instructor discusses EM flowmeter data collection.]

Fred Paillet (NRP) discusses electromagnetic (EM) flowmeter data collected under ambient and pumped conditions.

 [Image: Sample section of acoustic-televiewer and EM flowmeter logs collected during course.]

Acoustic-televiewer (ATV) and electromagnetic (EM) flowmeter logs collected during the course.

 [Image: Sample section of optical-televiewer log collected during course.]

Optical-televiewer image of fractured granite penetrated by demonstration wells.

 [Photo: Students working on computers and at monitoring well, collecting EM flowmeter and water-level data.]

Students make electromagnetic (EM) flowmeter and water-level measurements in pumped well during a cross-hole flow test.

 [Photo: Students working on computers and at monitoring well, collecting heat-pulse flowmeter and water-level data.]

Students make heat-pulse flowmeter (HPFM) and water-level measurements in observation well during a cross-hole flow test.

 [Photo: Students learn about collection of OTV data and related computer euipment.]

John Williams (BG) explains the collection of optical-televiewer (OTV) images of the bedrock penetrated by a borehole.

 [Photo: Students observe computer monitors in logging truck during calibration of caliper tool.]

Students observe calibration of caliper tool, which is used to measure the diameter of the borehole.

You can also read about and see photos from other past OGW BG courses and USGS project support.

USGS Home Water
Climate and Land Use Change Core Science Systems Ecosystems Energy and Minerals Environmental Health Natural Hazards

Accessibility FOIA Privacy Policies and Notices logo U.S. Department of the Interior | U.S. Geological Survey
Page Contact Information: Contact the OGW Branch of Geophysics
Page Last Modified: Thursday, 29-Dec-2016 20:01:43 EST