| This paper is on the basis of photographs information obtained by the remote sensing satelite in the third Chinese Arctic Research Expeendition,combines with image analysis technology and makes deep discussion in sea-ice dynamics model with the relevant image acquisition and processing,geometrical parameter analysisis and parameter method,which are combied with image analysis technology.It analises the contribution of the Arctic summer monsoon to the sea-icemovement though statistical methods.First,this paper illustrates the formation of polar sea-ice and its important impact on the polar sea-ice in the global climate change.Then it makes an overview on the third Chinese National Arctic Research Expedition,at last it points out the conventional technical methods in polar sea ice study,namely the satellite remote sensing technology as well as the related sea-ice model oft dynamics.The article also makes a summary on the study situation and development trends of the important parameters and parameterization.Chapter two is focused on the analysis and processing technique of satellite remote sensing photos in this article,and makes detailed description to the satellite remote sensing photo processing followed by the article and feature extraction.According to the processing, the centroid movement track and further parameters of sea-ice can be obtained.Chapter three discusses the Arctic wind field information,which brifely introduces the background of NCEP reanalysis data and the mixed-wind data and data processing methods.According to the necessary numerical simulation of the two wind fields in the satellite remote sensing photos,we obtain the time of these photos and the instantaneous wind speed of the target sea-ice centroid by using double interpolation.Then with comparison between several groups of photos and relative wind fields vectorgrach,it is concluded the summer wild' contribution to the sea-ice movement.The final chapter is the contributed numerical simulation of the wind on the sea-ice movement using statistical methods,with the regression found of the wind speed of sea-ice drifting and local wind speed,we find that wild's contribution to sea-ice movement is very remarkable.The contribution of wind angle change to the rotation angle change of sea-ice is about 25%. |
