Reflection and Ground Penetrating Radar for Environmental Site Characterization

Steeples, Don W.

University of Kansas, Lawrence, Kansas (United States)

关键词: Pumping;    Dimensions;    Cones;    Computers;    Water Tables;   

DOI  :  10.2172/828642
RP-ID  :  EMSP-60199--2000
RP-ID  :  FG07-97ER14826
RP-ID  :  828642

美国|英语

来源: UNT Digital Library

【 摘 要 】

(1) To examine the complementary site-characterization capabilities of modern, three-component shallow seismic reflection (SSR) techniques and ground-penetrating radar (GPR) methods at depths ranging from 2 to 8 m at an existing test site; (2) To demonstrate the usefulness of the two methods when used in concert to characterize, in three dimensions, the cone of depression of a pumping well that will serve as a proxy site for fluid-flow at an actual, polluted site; (3) To use the site as an outdoor mesoscale laboratory to validate existing three-dimensional ground-penetrating radar and seismic-reflection computer models developed at the University of Kansas. To do this, seismic and GPR data are being collected along the same line(s) and within the same depth range. The principal investigators selected a site in central Kansas as a primary location. Although the site itself is not environmentally sensitive, the area offers attributes that are particularly useful for this research and allow the site to serve as a proxy for areas that are contaminated. As part of an effort to evaluate the strengths of each method, the seismic and GPR surveys have been repeated on a seasonal basis to establish how the complementary information obtained varies over time. Because the water table fluctuates seasonally at this site, variations in the two types of data over time also can be observed. Such noninvasive, in-situ methods of identifying and characterizing the hydrologic flow regimes at contaminated sites support the prospect of developing effective, cost-conscious cleanup strategies in the future.