The System Of Tidal Inlet And The Response To Environment

Coast zone is the sensitive belt of environment change. Under the influence both of nature and human being, the problem of resource and environment of coast zone is standing out increasingly. It is an important question for discussion of coastal geomorphology to research the self-adaptability and the response to environment of the coast system.Tidal inlet is an important subsystem of coast system. It is very sensitive to environment change. From the point of view of dynamic geomorphology system, physical process of interaction and adaptation of every cell of tidal inlet during keeping stabilization of system is studies, influence on system of environment change and response to environment of tidal inlet are analyzed, how to make sustainable use of resource of tidal inlet is discussed finally.At first, characteristic of every cell inside tidal inlet is studied. Based on the analysis of the characteristic of interaction between form of tidal inlet and dynamic and the configuration of landform and the characteristic of dynamic and sediment transportation, relation of inter-affection and interaction among every cell of tidal inlet is discussed, self-adaptability of keeping stabilization is analyzed. Based on the study of modem dynamic and combination of landform, tidal inlet is classified by dynamic geomorphology system. The waterway between tidal ridge of radiation sandbank besides Jiangsu coast has characteristic of interaction between landform and dynamic, so this kind of waterway is regarded as a special sort of tidal inlet, the landform foundation of development and dynamical surrounding and trend of evolution are studied.During the study of opening characteristic of system, response to environment is studied from relationship of system and outside environment. Using the method of coastal dynamic geomorphology and mathematic model and physical model, the examples of three kinds of tidal inlet such as sand dam and lagoon type and drown vale type and submerged type are studied separately.How to sustainable use the resource of tidal inlet is studied finally. The characteristic of tidal inlet resource and the main question during sustainable use are summarized. Through the analyses of carrying capacity of resource, the principle of tidal inlet resource usage is put forward, actuality of usage is estimated, the obstacle diagnostic method of sustainable usage is brought forward, the approach of how to sustainable use resource is discussed.