dead neap;dead tide,neap tide

Taking the statistical analysis of yearly minimum tidal level in Baijiao Hydrological Station for example,this paper compared logarithm gamma distribution and Extreme-value TypeⅠdistribution with the result based on optimum curvefitting for estimating the characteristics of the empirical frequency.

以白蕉站年最低潮位的统计分析为例,对极值Ⅰ型和对数Γ分布线型与经验频率点据拟合结果进行了比较。

Local theoretically lowest tide level is calculated by the latest data of tidal level observed from two hydrometrical stations,which is compared with the theoretically lowest tide level of the sea chart.

通过两个测站最新潮位观测资料计算出当地理论最低潮面,与现有海图理论最低潮面进行比较,并反算验证说明新的理论最低潮面保证率较高。

It is proposed to adopt theoretically lowest tide level as the designed lowest navigable stage for this kind of channel, and suggested to adopt the substitutes of some practical methods near to theoretically lowest tide level in relevant standards and codes.

分析现行标准规范对潮汐影响明显的感潮河段航道的设计最低通航水位计算方法的有关规定及存在问题,提出采用理论最低潮面作为这类航道的设计最低通航水位的建议。

The algorithms of the correction of shallow water tides and long period tides to the lowest normal low water(LNLW) are renewed.

对中国沿岸有代表性的15个验潮站的多年潮位观测资料,以年序列进行调和分析并据调和常数计算验潮站的海图深度基准面,分析了由年观测序列求得的调和常数和海图深度基准面的稳定性,研究和更新了理论上可能最低潮面计算中的浅水分潮和长周期分潮订正算法。

The authors put forward a new method calculating service level of network in average speed of network,and profoundly discussed principles,methods,two kinds of incorrect tendencies and psychological control factors of tripers determining minimum acceptable service level of network in which city planners and administrators of city develepment are interested most.

分析了市区路网物理、运行、管理特性，提出了用网络平均速度来确定路网服务水平的一种新方法，并对交通规划师和城市发展管理者最感兴趣的城市路网最低可接受服务水平、确定原则、方法、注意问题和出行者心理控制因素进行了较深入的探讨。