Acquisition of Ground Penetrating Radar Antennas and Computing Facilities for the Near-Surface Geophysics Programat the University of Connecticut

9712012 Liu这笔拨款为康涅狄格大学浅层地球物理项目额外的探地雷达（GPR）天线、工作站和PC的获取提供部分支持。政府会购买三根频率分别为25、200及1000兆赫的探地雷达天线，以研究探地雷达信号在不同地质及构造环境下的衰减情况。这些计算机将用于数据采集和随后的反演和建模。在一个伴生地球物理学提案的支持下，PI将开发一个非线性频率依赖模型，用于土壤和浅层地壳的高分辨率探地雷达断层扫描，并将研究雷达信号在非均匀地层中的传播。改进的探地雷达层析成像技术对环境问题的潜力（即绘制受污染的地下水羽流）值得继续发展这种地球物理技术。＊＊＊

9712012 Liu This grant provides partial support for acquisition of additional ground penetrating radar (GPR) antennas, a workstation and a PC for the shallow geophysics program at the University of Connecticut. Three GPR antennas at frequencies of 25, 200 and 1000 MHz will be purchased to examine the attenuation of GPR signals through various geological and structural environments. The computers will be used for data acquisition and subsequent inversions and modeling. Together with research support from a companion geophysics proposal, the PI will develop a non-linear frequency dependence model for high resolution GPR tomography of soils and the shallow crust and will investigate the propagation of radar signals through inhomogeneous strata. The potential of improved GPR tomographic techniques to problems of environmental significance (i.e. mapping contaminated groundwater plumes) warrants continued development of this geophysical technique. ***