Navigation Links
Helping the NRC look below the surface
Date:4/23/2010

Agricultural Research Service (ARS) scientists are helping U.S. Nuclear Regulatory Commission (NRC) experts model the movement of radioactive materials in the soil. Their findings can be used to fine-tune the risk assessment studies that are an essential component in the development of commercial nuclear facilities.

Soil scientists Yakov Pachepsky, Timothy Gish and Andrey Guber all work in the ARS Animal and Natural Resources Institute in Beltsville, Md. The team set up their study at the Optimizing Production Inputs for Economic and Environmental Enhancement (OPE3) study area in Beltsville, which was established in 1998 to study major environmental and economic issues facing U.S. agriculture. It is equipped with remote sensing gear and other instrumentation for monitoring weather, soil, plants and groundwater.

The researchers studied how contaminants move through the vadose zone, which is the area between the soil surface and the groundwater zone. Over a 2-year period, the team added several nontoxic chemical tracers to irrigation water and used 12 site wells to monitor levels of those tracers at three different depths in the soil. Surface runoff, soil moisture profiles, soil water potential, groundwater levels and weather variables were also monitored.

The researchers compared the field data they collected on water flow and tracer concentrations with results from model simulations. Then they ran a range of chemical transport models that varied in complexity to learn more about conditions that could significantly affect the movement of water--and contaminants--below the soil surface.

Among other findings, the team concluded that tracer transport in soils and shallow groundwater could be strongly affected by gaps in the vadose zone's restrictive fine-material layers.

This and other findings from this work can be used to estimate pollutant transport scenarios for risk assessment studies of nuclear facilities. The results were published in a report by the NRC in 2009.


'/>"/>

Contact: Ann Perry
ann.perry@ars.usda.gov
301-504-1628
United States Department of Agriculture-Research, Education, and Economics
Source:Eurekalert

Related biology news :

1. Conference to examine role technology can play in helping US manage healthcare costs
2. A helping hand from the grandparents
3. Helping back pain sufferers to stay in work
4. Giving nature a helping hand
5. Researcher helping to pioneer medical therapy for Fragile X Syndrome presents latest findings
6. Satellites helping aid workers in Honduras
7. Green IT not helping climate change
8. Energy experts helping Australian households reduce carbon emissions
9. Tennessee foresters helping to return chestnuts to American forests
10. Texas AgriLife researchers helping
11. New insights into helping marine species cope with climate change
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:1/22/2016)... DUBLIN , January 22, 2016 ... has announced the addition of the  ... to their offering. --> ... of the  "Global Behavioral Biometric Market ... --> Research and Markets ( http://www.researchandmarkets.com/research/4lmf2s/global_behavioral ...
(Date:1/20/2016)... JOSE, Calif. , Jan. 20, 2016 /PRNewswire/ ... developer of human interface solutions, today announced sampling ... controller solution for wearables and small screen applications ... such as printers. Supporting round and rectangular shapes, ... S1423 offers excellent performance with moisture on screen, ...
(Date:1/11/2016)... Jan. 11, 2016 Synaptics Incorporated (NASDAQ: ... today announced that its ClearPad ® TouchView ™ ... won two separate categories in the 8 th ... Best Technology Breakthrough. The Synaptics ® TDDI solution ... supply chain, thinner devices, brighter displays and borderless designs. ...
Breaking Biology News(10 mins):
(Date:2/11/2016)... , Feb. 11, 2016  Spectra BioPharma Selling Solutions ... that provides biopharma companies the experience, expertise, operational ... deploy outsourced sales teams. Created in concert with ... both the strategic and tactical needs of its ... solutions through both personal and non-personal promotion. ...
(Date:2/11/2016)... , Feb. 11, 2016   BioInformant ... report, "Stem Cell Research Products, Opportunities, Tools, and Technologies ... ... in the stem cell industry, BioInformant has more than ... the stem cell market, by stem cell type. This ...
(Date:2/10/2016)... , February 10, 2016 Early-career researchers ... Peru , Uganda and ... work in health and nutrition   Indonesia , ... Uganda and Yemen are being honored ... epidemiology. They are also celebrated for mentoring young women scientists who are ...
(Date:2/10/2016)...  IsoRay, Inc. (NYSE MKT: ISR), a medical technology ... applications for the treatment of prostate, brain, lung, head ... results for the second quarter and six months of ... --> --> Revenue was ... which ended December 31, 2015, a 12% increase compared ...
Breaking Biology Technology: