Eye-safe tracking of oil fog plumes by UV lidar
NOAA's Wave Propagation Laboratory operated a plume-tracking lidar during two field experiments investigating atmospheric dispersion in complex terrain. The lidar successfully acquired data on oil fog plume behavior by detecting the elastic backscatter of the pulsed output of a frequency-doubled ruby laser. This UV wavelength (0.3472 ..mu..m) met stringent eye safety restrictions. An analysis of signal and noise levels demonstrates that plume definition at a wavelength of 0.3472 ..mu..m is superior in many cases to that of 0.6943 ..mu..m when pulse energies are low enough to be eye-safe at the range to the plume. This is often true in spite of the high threshold set by the large molecular scatter from the ambient air at the UV wavelength. Backscatter coefficients of oil fog at the shorter wavelength were 1--4 x larger than at the longer wavelength.
- Research Organization:
- NOAA Wave Propagation Laboratory, Boulder, Colorado 80303
- OSTI ID:
- 5674853
- Journal Information:
- Appl. Opt.; (United States), Vol. 22:15
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
02 PETROLEUM
OILS
AEROSOL MONITORING
PLUMES
OPTICAL RADAR
SAFETY
REMOTE SENSING
EYES
FOG
LASER RADIATION
LIGHT SCATTERING
SIGNAL-TO-NOISE RATIO
SPATIAL RESOLUTION
ULTRAVIOLET RADIATION
BODY
BODY AREAS
ELECTROMAGNETIC RADIATION
FACE
HEAD
MEASURING INSTRUMENTS
MONITORING
ORGANIC COMPOUNDS
ORGANS
OTHER ORGANIC COMPOUNDS
RADAR
RADIATIONS
RANGE FINDERS
RESOLUTION
SCATTERING
SENSE ORGANS
500200* - Environment
Atmospheric- Chemicals Monitoring & Transport- (-1989)
020900 - Petroleum- Environmental Aspects