Study On Sediment Transport And Forecast Model Of Seacoast Evolution In The Yellow River Estuary

There are abundant resources in the Yellow River delta area,including land,oil and gas resources.About 85% of output of Shengli oil field comes from there.The rapid silting epeirogenic has an important effect on the oil-gas exploration and development in the Yellow River estuary area,which makes the offshore oil and gas production into exploitation on land,and greatly reduces the production cost.The estuary area makes people have access to the exploration,development and utilization of marine resources;meanwhile it is the important place with high density of people and also one for coastal residents' living.This paper chose the Yellow River delta as the experimental area.Using Landsat-8 remote sensing image,22 sets of suspended sediment concentration data and spectral reflectance data(these data were measured in November 25,2013),First,the paper analyzed spectral curve to determine sensitive spectrum wave bands,and then the inversion model for the suspended sediment concentration was set up.Second,data pre-processing was carried out,including cutting and atmospheric correction of remote sensing image,which allowed the distribution diagram of the suspended sediment concentration of the Yellow River delta to be obtained,and then distribution of sediment in estuary area was analyzed.Based on the image data in October 2007,2009,2011,using Cellular Automata model(Cellular Automata,CA)and Monte carlo method(Monte Carlo Method,MCM),the paper analyzed the main factors that influence the evolution of coastline of sediment,focused on the research of Cellular transformation rules,determined the parameters for the system to be simulated,and developed a set of evolution prediction model based on the coastal zone of the Yellow River delta sediment,then the distribution of coastline in this area in 2013 was successfully predicted.The research content of this paper has three aspects: 1.This paper summarized the Line change and shoreline evolution of the Yellow River delta and analyzed the main factors that influence the shoreline evolution,including the sediment content,channel position,submarine topography,marine power,human activities,and climate.2.By analyzing the measured spectral curve,the paper set up the inversion model for the suspended sediment concentration and summarized the result of the inversion analysis.3.By studying the cellular automata model and Monte Carlo method,and determining the cellular transformation rules,a set of evolution prediction model based on the coastal zone of the Yellow River delta sediment was established.Combining with remote sensing inversion result and remote sensing data,shoreline evolution and influence factors were analyzed in recent years.