After analyzing , the author got the basic character of tidal flat hydrodynamic : the time of flooding on bare flat and ebbing is basically the same and the time of flooding on pioneer zone of salt marsh is a little short ; the process curve of current speed on bare flat did not appear peak value on the beginning of flooding and at the end of ebbing but presented double peak , that is , it presented double peak in winter and spring and ebbing peak value disappeared in summer and autumn , salt marsh presented single peak character in a year and the process curve in tidal creek presented double peak ; all current direction on every spot presented gyration current and the current speed changed rapidly during the high water level without obvious slack water period 分析得到了潮滩水动力基本特征:光滩水位涨潮和落潮时间基本相等,而盐沼前缘带水位涨潮时间略短;光滩流速过程线在涨潮初和落潮末出现峰值,呈现“双峰型”特征,盐沼前缘带则冬、春季节呈现“双峰型” ,夏、秋季节落潮峰值消失,盐沼带四季呈现单峰特征,潮沟内过程线为“双峰型” ;各测点流向均呈现回转流特征,在高水位时流向迅速改变,不存在明显的憩流。
During my master " degree investigation , i mainly focused on the coarse - grain stratigraphy within mesozoic basins in chengde and pingquan districts , the eastern yanshan , and did systemic provenance analysis and paleo - current direction measurement and studied the relationship among basin evolution , volcanism and tectonism . then i summarized the mesozoic basin development and the coupling characters of basin and mountain . the evolution of basin and mountain in this area can be divided into several stages : the stage of compression uplift and flexural basin during the triassic through the early jurassic , the stage of structural compression - volcanism and foreland basin during the middle and late jurassic and the stage of rift basin in the cretaceous 在野外典型路线调查的基础上,对燕山地区东段承德、平泉地区的中生代盆地中发育的粗碎屑沉积层,进行了系统的物源分析与古流测定,并在此基础上重点剖析了盆地的发育、火山活动、构造变动三者之间的关系,总结了本区中生代盆地发育规律及盆山耦合特征,并将盆山演化划分为:三叠纪?早侏罗纪的构造挤压隆升与挠曲盆地发育阶段阶段,中晚侏罗纪的构造挤压?火山活动与类前陆盆地发育阶段,早白垩世的拉张断陷盆地发育阶段。
The author emphasized on the research of the process of tidal flat hydrodynamic and the process of total nitrogen , total phosphor dynamical transportation and got the conclusion as follows : ( 1 ) open tidal flat of dong tang chongming yangtze estuary was chosen as research object and two typical section plane was set up in order to measure four seasonal hydrology element and get index datum such as water level , current direction , current speed 得到如下结论: ( 1 )以长江口崇明东滩敞开型潮滩为研究对象,设置了两条代表性断面,实测了四个季节的水文要素,获得了包含水位、流向、流速等指标数据。
The relationship of information and decision as well as generation and development of information analysis are discussed . the evolution of decision support system and the methods of information analysis in different stages of development are overviewed . the current direction of development is to construct integrated intellectual decision support system that is based on database , data mining and on - line analytical processing 全文共分六章:第1章概述:论述了信息与决策的关系及信息分析的产生与发展,归纳了决策支持系统的演化过程及不同发展阶段所采用的信息分析方法,指出目前的发展趋势是建立以数据仓库为基础、数据挖掘和联机分析处理为主要分析方法的集成化的智能决策支持系统,为全文论述做铺垫。