The Use Of Infrared Photography In The Investigation Of Undergeround Phenomena
Infrared photography measures the heat that emanates from objects, and captures it on film. It has many applications to science and industry, and can even in many cases “see” objects buried under the earth.
All objects process heat absorption and emission differently, which gives them a type of signature. Underground objects likewise process heat differently than surrounding soil, rock, farmland, concrete, etc. and so from time to time,if the objects are not buried too deep, their different way of processing heat can make a noticeable difference in surface infrared photography. In its most advanced application, researchers have used infra red technology to see objects as deep as 38 feet below the earth.Such findings are subsequently followed up by radar examination , which can “see” reliably to 20 feet.
A number of applications for infrared underground investigation have been developed, and among the most obvious is its use in investigation of the presence of underground piping systems. Since piping often transmits material that is hotter or colder than the surrounding area, it creates a perceptible difference in the infrared emanations coming out from the surface above the object. Heating pipes, for example, will noticeably heat up insulation and the surrounding area, and make a very definite infrared imprint. At times such piping can be detected even when it runs under asphalt or concrete.
Some of the applications of infra red photography for identification of underground phenomena include storm water drains, sewer lines, distribution piping and supply water mains.
Ariel infrared photography has been used for detection of underground petroleum piping. Surrounding environmental substrate has different effects on ambient temperature, however the piping can be traced though farmland, dirt roads, and even under asphalt surfaces.
The best infra red photographs are taking from a raised elevation.such as a tall truck of helicopter. Quality examination can be made at night when the surface gives off the heat absorbed during the day.
Thanks to Winmax Video of California for sponsoring this report. Winmax is a video production company specializing in trade show video, corporate video, Restaurant video and other business video genre.
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