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Emulsified fuels of machine origin in seawater - a contribute to remote detection

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Języki publikacji
EN
Abstrakty
EN
Development of industry and trade in the last few decades caused a huge increase in the pollution of the world's oceans. Substantial contributors to marine pollution come with the rivers from land-based sources including the by products of industry, run-off from agriculture activities such as biocides as well as effluents from urban areas. Moreover, a significant amount of marine pollution is caused by shipping and maritime activities. The operation of ship plants gives a real possibility for engine oils and fuels to reach the marine environment. Discharge waters contain a certain amount of petroleum derivatives in the form of dispersed droplets (oil-in-water emulsion). The presence of oil emulsion cause measurable changes in the optical properties of seawater. It is conceptually possible to detect these changes using a standard radiance or irradiance reflectance meter. Hence, a set of radiative transfer simulation has been carried out. This paper presents a computed photon trace simulation based on the Monte Carlo code, applied to the marine environment. The results are presented as reflectance spectra for the models of Baltic Sea and ocean water both pure and polluted by oil emulsion. It is shown that even small amounts of petroleum pollution raise the values of irradiance reflectance and cause a spectral shift by certain conditions. A possibility for remote evaluation of oil pollution is discussed as well as the perspective for improving the interpretation of shipboard and offshore light field analyses.
Twórcy
autor
  • Gdynia Maritime University, Department of Physics Morska Street 81-87, 81-225 Gdynia, Poland tel.:+48 58 6901284, fax: +48 58 6901399, kamilar@am.gdynia.pl
Bibliografia
  • [1] Karpicz, R., Dementjev, A., Kuprionis, Z., Pakalnis, S., Westphal, R., Reuter, R., Gulbinas, V., Oil spill fluorosensing lidar for inclined onshore or shipboard operation, Applied Optics, Vol. 45, Issue 25, pp. 6620-6625, 2006.
  • [2] Leathers, R. A., Downes, T. V., Davis, C. O., Mobley, C. D., Monte Carlo Radiative Transfer. Simulations for Ocean Optics: A Practical Guide, Naval Research Laboratory, Washington, DC, 2004.
  • [3] Migliaccio, M., Gambardella, A., Tranfaglia, M., SAR Polarimetry to Observe Oil Spills, IEEE Trans. Geosci. Remote. Sens., vol 43, no. 2, pp. 506-511, 2007.
  • [4] Mobley, C. D., Estimation of the remote-sensing reflectance from above-surface measurements, Appl. Optics 38(36), pp. 7442-7455, 1999.
  • [5] Mobley, C. D., Light and Water: Radiative Transfer in Natural Waters, Academic Press, 1994.
  • [6] Otremba, Z., Oil droplets as light absorbents in seawater, Opt. Express 15 (14), pp. 8592-8597, 2007.
  • [7] Otremba, Z., Piskozub, J., Phase functions of oil-in-water emulsions, Optica Appl.. XXXIV (1), pp. 93-99, 2004.
  • [8] Sagan, S., Rzeczywiste właściwości optyczne wód Bałtyku, Polska Akademia Nauk, Rozprawy i monografie 21/2008.
  • [9] Smith, R. C., Baker, K. S., Optical properties of the clearest natural waters (200–800 nm), Applied Optics, Vol. 20, Issue 2, pp. 177-184, 1981.
  • [10] Stelmaszewski, A., Król, T., Toczek, H., Light scattering in Baltic crude oil – seawater emulsion, Oceanologia, 51(3), pp. 405-414, 2009.
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-article-BUJ5-0040-0048
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