An airborne electromagnetic (EM) survey used to map the upper San Pedro River aquifer, near Fort Huachuca in southeastern Arizona

被引:0
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作者
Wynn, J [1 ]
Gettings, M [1 ]
机构
[1] US Geol Survey, Natl Ctr 954, Reston, VA 20192 USA
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中图分类号
P3 [地球物理学]; P59 [地球化学];
学科分类号
0708 ; 070902 ;
摘要
An airborne EM survey using a 3-component, 20-channel GEOTEM system with an additional airborne magnetic channel was flown over Fort Huachuca and the area north and east as far as the San Pedro River, southeastern Arizona. Inversions of the EM data, so-called Conductivity-Depth Transforms (CDTs), provide remarkable information on the upper San Pedro River aquifer down to 400 meter depths in some cases; results agree with limited well-control. Depths derived from the magnetic data set, when inverted using an Euler transform, agree well with a map of the basement derived earlier from gravity data. Together, the complete data set allows us to map the Upper San Pedro River aquifer in a region where there is dispute over allocation of scarce water resources and the San Pedro Riparian Conservation Area.
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页码:993 / 998
页数:6
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