Often Oil spills on the terrestrial landscape including the wetlands. This could be either operational or as a result of sabotage. I will like to know if there is a technology that can be used to detect in near real time and monitor such (potential) spills. This takes into consideration the fact that such spills could occur in a thick bush or vegetated areas. Any thoughts here would be appreciated.
The visible portion of the electromagnetic spectrum ranges from 400 to 700 nm. Overall, oil displays a moderately larger reflectance than water, but does not show specific absorption or reflection tendencies. Thin oil layers or sheen appear silvery to the human eye and reflect light over a wide spectral range—as far as the blue. Thick oil layers appear to be the same color as bulk oil, typically brown or black. Overall, oil has no specific spectral information that differ from the water upon which the oil floats]. As a consequence, processes that inspect particular spectral regions do not enhance discrimination. One method of using visible spectra is to use a push-broom scanner that uses a CCD detector and an optical system to direct ground elements to different parts of the CCD detector.
taken from: A Review of Oil Spill Remote Sensing
Dear Abhijit Mitra
How are oil slicks detected in water (oceans) and is the visual interpretation sufficient to achieve from oil slicks?