Physical Characteristics of Soil Collected in Iraq and Afghanistan Related to Remote Sensing
ENGINEER RESEARCH AND DEVELOPMENT CENTER VICKSBURG MS GEOTECHNICAL AND STRUCTURES LAB
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Interrelationships among soil and environmental properties are typically nonlinear. They are affected by environmental conditions such as air temperature, soil temperature, wind speed, and solar radiation. Military engineering research programs are investing extensively in quantifying the effects of each soil property and environmental property on signal attenuation, magnetic susceptibility, reflectance, and ultimately on sensor performance. In support of joint military interests, the U.S. Army Engineer Research and Development Center ERDC conducted soil testing and sampling in Iraq in 2008 and in Afghanistan in 2009. Data sets from each sampling site were spatially coincident and were geo-located using a global positioning system GPS to provide the fidelity required for multiple realizations of scene parameters. This paper discusses some initial findings from analyses of the soil samples and data. Soil at the surface and in the underlying subsurface layers could be differentiated based on textural, spectral, chemical and electrical properties. Disturbed soil could be identified, as expected, with remote sensing technology. A regular arrangement of soil characteristics existed in the arid soil in both Iraq and Afghanistan. A comprehensive database including these soil properties is on a secure server located at the U.S. Army Corps of Engineers Reachback Operations Center UROC at the ERDC. The soils data and all other properties are available for download through the UROCs secure web site and are incorporated into site-specific geospatial viewers. This access and retrieval portal allows for user-defined data selection for custom development and validation of technologies to model, measure, and mitigate the effects of geo-environmental factors that impact the detection capabilities of sensors.
- Soil Mechanics
- Miscellaneous Detection and Detectors