Hydrocarbon Index – an algorithm for hyperspectral detection of hydrocarbons

Reflectance Spectroscopy as a Tool for Monitoring Contaminated Soils

“…Based on the HyMap mission, a Hydrocarbon Index was developed for the mapping of hydrocarbonbearing materials. This index is limited to very high signal-to-noise ratio sensors, as well as by other issues such as problems with land cover, vegetation and high concentration detection levels (Kühn et al 2004). The most comprehensive work on reflectance properties of hydrocarbons was conducted by Winkelmann (2005): several types of hydrocarbons were mixed with several types of soil under laboratory conditions.…”

State of the art satellite and airborne marine oil spill remote sensing: Application to the BP Deepwater Horizon oil spill

“…Similar spectral features were found for a plastic tarp but not vegetation. Kühn et al (2004) created a hydrocarbon index using radiances at 1705, 1729, and 1741 nm from the same HyMAP data and found improved detection. There are features at 1390 and 1410 nm due to a first oxygen-hydrogen bond, O\H, overtone that could be diagnostic (Clark, 1999).…”

Evaluation of the Ability of Spectral Indices of Hydrocarbons and Seawater for Identifying Oil Slicks Utilizing Hyperspectral Images

“…It has been shown that the spectral response, an absorption feature at 1600 nm and 1800 nm, is caused by the overtone absorption of carbon-hydrogen bonds and can be used to identify oil slicks. Using this feature, Kühn et al [26] proposed the Hydrocarbon Index (HI), which comprises the hydrocarbons absorption features at 1730 nm to identify substances containing hydrocarbons. For the formula of HI, R A , R B , and R C are the reflectance values to the left of 1730 nm, at 1730 nm, and to the right of 1730 nm, respectively, and λ is the wavelength.…”