Discussion on Ocean Optics Properties of Chinese Offshore and Its Distribution Characteristics

In the optical experiments of"Chinese Offsore Investigation and Assessment"in summer 2006, winter 2006,spring 2007and autumn 2007cruise,the AOP's data,IOP's data and Auxiliary data were obtained.Using these data,researches about ocean optics properties of Chinese offshore and its distribution characteristics were carried out.(1)According to characteristics about Rrs(412)and Rrs(490),there are obvious seasonal and regional changes in the main River mouth.(2)Analyzing the data of Rrs spectrum of different area water,we find that the different Rrs Spectrum embodies different properties,and the cause of formation is different also.(3)According to analyzing the distribution of absorption coefficient about CDOM and de-pigmented particles at 400nm,it shows that the input matter from land plays an important role in distribution characteristics of de-pigmented particles,and next of CDOM,but the phytoplankton and its degradation products has less effect on CDOM.(4)According to analyzing the relative contribution of phytoplankton,CDOM and de-pigmented particles to total absorption coefficient of seawater at 400nm, it shows that the major influence factor of optic properties is different in different area.