Study on wave design parameters in sea ice melting zone of the eastern Barents Sea
The eastern part of the Barents Sea is rich in oil and gas but covered by sea ice.With climate change,the sea ice continues to melt,making the eastern region maintain open water for longer,and wave characteristics will also change accordingly.It is necessary to carry out corresponding research for the design,construction and operation of marine engineering structures serving in this sea area.In this paper,the sea ice concentration data from the National Snow and Ice Data Center(NSIDC)were col-lected to drew the sea ice edge lines and analyzed the changes of sea ice extent.According to ice edge lines,one representative point was selected in the eastern sea ice melting zone.The wave data from the ERA5 dataset of the European Center for Medium-Range Weather Forecasts(ECMWF)were collected to study the basic wave characteristics and wave design parameters.The annual and seasonal extreme values of wave height were extract to estimate the return values of significant wave height by the GEV,Gumbel,Weibull and Maximum entropy distribution models,respectively.The results showed that with the reduction of sea ice,the frequency without wave at representative point had decreased signifi-cantly,and wave existence was throughout the year in recent years.According to the results of the re-turn values,summer was the most suitable operating season.
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万方数据
