A biooptical model of retrieving petroleum concentration in seawater
- PDF / 129,223 Bytes
- 5 Pages / 595.276 x 841.89 pts (A4) Page_size
- 6 Downloads / 195 Views
A biooptical model of retrieving petroleum concentration in seawater HUANG Miaofen1*, SONG Qingjun2, XING Xufeng1, ZHAO Zulong1 1 2
Dalian Ocean University, Dalian 116023, China National Satellite Ocean Application Service, State Oceanic Administration, Beijing 100081, China
Received 7 June 2013; accepted 16 December 2013 ©The Chinese Society of Oceanography and Springer-Verlag Berlin Heidelberg 2014
Abstract A biooptical modeling, which is based on a radiation transfer model, can be employed to simultaneously retrieve the concentration of various colour factors by multi-spectral remote sensing data, after connecting inherent optical properties (absorption coefficient and backward scattering coefficient) of colour factor with apparent optical properties (remote sensing reflectivity). At present, this method has been used in a relatively wide range of applications in the inversion of a conventional water colour factor concentration in the case II water body: applications such as chlorophyll, suspended sediment, yellow substance. On the basis of extensive field testing data of water quality, correspondingly apparent optical properties, and the full use of the existing parametric model of colour factor inherent optical properties (with the parametrization of petroleum substance inherent optical properties established in the project) the remote recognition model for oil concentration is established by introducing oil as a new water colour factor into a biooptical remote algorithm. The estimated value of the oil concentration was obtained by solving the biooptical model, using the data measured in May 2008 and August 2009 and June 2010 in seawater. The highly accurate inversion result promises to estimate the oil concentration in water for remote sensing. Key words: biooptical model, colour factor, parametrization etroleum concentration Citation: Huang Miaofen, Song Qingjun, Xing Xufeng, Zhao Zulong. 2014. A biooptical model of retrieving petroleum concentration in seawater. Acta Oceanologica Sinica, 33(5): 81–85, doi: 10.1007/s13131-014-0478-6
1 Introduction In the last few decades, marine oil spill accidents have happened very frequently. This presents a major threat to the open sea and coastal water environment. Dispersing agents have typically been used to process the polluted waters after the marine oil spills. The processed oil disperses, diffusing into the water in the form of microparticles. Therefore disperse oil still exists in the water, even though there is no floating oil on the surface. It is essential to monitor the temporal and spatial distributions of the polluted waters by using a remote sensing technology. Petroleum substances primarily consist of hydrocarbon and exist in water in various forms including: float oil (grain diameter greater than 100 μm), dispersed oil (10 to 100 μm), emulsified oil (0.1 to 10 μm), soluble oil (less than 0.1 μm) and so on. For the situation that it does not form obvious areas of detectable oil film, petroleum substances can be taken as a kind of water color factor (Hua
Data Loading...
