【摘 要】
：
Using field hydrological data, the relationship between the mixing of salt water and fresh water and the tidal range/ high tidal level in the Changjiang (Yangtze) River estuary is discussed, and the t
【出 处】
：
Chinese Geographical Science
论文部分内容阅读
Using field hydrological data, the relationship between the mixing of salt water and fresh water and the tidal range/ high tidal level in the Changjiang (Yangtze) River estuary is discussed, and the transporting and concentrating of suspended sediment
其他文献
本文从新的角度提出了一类在计算机辅助制图情况下具有灵活、通用性的多焦点地图投影方法。介绍了这种方法的原理、给出了若干可满足用户复杂需求的投影公式及其相应的算例。利用本文提出的方法,不仅能够概括或产生大部分现有的变比例尺、多焦点地图投影,而且可以获得更为广泛的结果。
在专题制图系统中,面状符号的自动绘制具有重要意义。晕线法是绘制面状符号较为常用的方法,然因其图形结构简单,对于绘制较为复杂的专题地图,分级,对比效果均不够理想,为此,本文提出了晕线图案法。这种方法以晕线法为基础,用不同的晕线,虚晕线的适当运算构成图案,从而实现面状符号的自动输出,本方法图案设计简单,既可交互式输出也可自动生成图案,既保留了晕线法优点,又实现了面状符号的多样化输出。利用晕线图案法,笔
本文从微机内存分配入手,系统地论述微机网络卡WC-SunSir的设计原理及其实现,它以系统软件和字库的内存的最小开销着手,解决微机网络应用软件的内存不足,兼顾解决文字处理系统。将关键的技术用汉卡来实现。用人机对话菜单方式,选择显示器的各种类型并自动加以转换。在汉字处理系统中采用压缩技术和平滑放大技术,以不同的汉字输入法提供给用户。特别实用于办公自动化系统,在实际的3~+COM网、NOVAL网络中较
本文采用标量衍射理论导出球面屏衍射的瑞利-索末菲公式及其远场近似。并据此导出球面散射屏远场散斑的若干统计特征。
Soil samples from several forest areas in China were analyzed by X-ray powder diffractometry after mineral separation and enrichment. The density gradient separation method with sequential extraction
This paper systematically analyzes and proves the favorable factors of utilizing the ports and the railways in Northeast China for the Asia-Europe land bridge transportation. It will be more beneficia
To provide scientific basis for appraising natural resources in Mt. Namjagbarwa area, the migration characteristics of geochemical microelements, such as Zn, V, Ti, Pb, Ni, Cu, Cr, Co, Be and Ba, in t
The developed regions are faced with the problems of regional comprehensive development, and the research on regional comprehensive development has become a trend in the world. To optimize regional in
Since the late 1950s, many Chinese scientists have explored the remains of the Quaternary glaciation in the Qinghai-Xizang (Tibet) Plateau and its surrounding mountains. In the main, 3-4 glaciations h