Analysis Of Dynamic Process And Geomorphological Characteristics Of Rizhao Coastal Zone

The coastal zone is a place of interaction between land and sea.And the coastal zone is interacted by hydrosphere,lithosphere,atmosphere and biosphere.Nowadays,more and more attention has been paid to the earth system science.The study of coastal zone has valuable scientific value.At the same time,the coastal zone is the main area of human economic activities.Most of the economically developed cities are located in coastal areas,such as the Yangtze River Delta urban agglomeration and the Pearl River Delta urban agglomeration.With the development of economy and the improvement of people's living standard,people are pursuing material life satisfaction,while more and more people are pursuing spiritual satisfaction,and the coastal area has become the preferred area for people to travel and vacation.Therefore,the coastal zone undoubtedly faces enormous pressure of environmental carrying capacity.By analyzing the dynamic process of the coastal zone,we can better understand the changes of the coastal zone landform,which is conducive to the utilization and protection of the coastal zone ecological environment.Rizhao City,located in the eastern part of Shandong Province,is an important coastal city in the Blue Economic Zone of Shandong Peninsula.Its unique geographical location makes it rich in marine resources and coastal tourism resources.Taking the coastal zone area of Rizhao city as the research object,this paper focuses on the dynamic process and geomorphologic characteristics of the coastal zone of Rizhao city.On the basis of the predecessors' researches,this paper analyzes and organizes the data and conducts a survey of the field geomorphology in the coastal zone of Rizhao City.Sample collection was carried out in typical areas,and experimental data were obtained.Based on the actual landform development characteristics,combined with the fragmentation index,wave index and sediment particle size analysis of the Rizhao coastal zone,the geomorphological characteristics and hydrodynamic processes such as waves,tides and rivers were studied.The following conclusions are drawn from hydrodynamic processes such as rivers and their relationships:(1)The coastal trending caused by the geomorphologic characteristics of Rizhao coastal zone is the dominant factor.Various dynamic factors,such as waves,tides and rivers,will influence the development of coastal dynamic geomorphologic features on the basis of structure.The scope of this study is small,the coastal strike is simple,the dynamic process of coastal zone is not complicated,and the development of coastal landform has certain regularity.(2)According to the specific trend of the coastal zone in the study area and the regularity of the dynamic process in different sections,the study area is divided into two parts,north and south,with Shijiezui as the boundary.The northern region is divided into north,central and south three sections,and the southern region is divided into north and south two sections.with a total of five research sections.The dynamic environment in the northern part of the north is weak and the development of geomorphological characteristics is mainly controlled by the tide,while the dynamic environment in the middle part of the north is moderate,the development of the geomorphological characteristics is dominated by the tidal control,and the influence of the waves is enhanced.The dynamic environment in the southern part of the northern part is the strongest in the region,and the control power of tide and wave on the geomorphology is the same.The southern part of the southern part of the dynamic environment is the weakest,the development of geomorphological features is mainly affected by the interaction of tidal and rivers;the southern part of the southern part of the dynamic environment is moderate,the development of geomorphological features is dominated by tidal action,the role of waves is greatly enhanced compared with the southern part of the south.The northern and southern regions have similar dynamic geomorphological patterns from north to south.Associated with a similar coastal trend,the effect of waves increases gradually from north to south.The southern and northern regions have the injection of the Rizhao river,so the river has a significant impact on the development of geomorphic features.