长江口天文潮预报修正的一种方法

作者：林勋励

单位：上海航道局

关键词：

分类号：

出版年·卷·期（页码）：1985·2·第一期（34-42）

摘要：

本文从统计学的角度,使用大通流量,江阴,天生,吴淞自1948年以来的水位资料,经周期图分离,过滤各类周期波和随机振动后进行分析,发现: (1)大通年平均流量有丰水期与少水期。 (2)江阴与天生受迳流影响有高水位期和低水位期,吴淤还受其海域来水的影响,1972—1980年出现另一个较高的水位期。此外各站无长期增减的趋势。 最后建立月平均流量与各站月平均水位的相关关系,对各港口逐月,逐旬的潮汐预报进行修正。

The data about the rate of flow at the Datong Station and the water level at the Jiangyin, Tiansheng and wusong Stations from 1948 till now are statistically treated through the period separation of periodogram and the filteration of various periodic waves and random fluctuations. The analyses of treated-data show that the annual mean rate of flow at the Datong Station has a rich water term and a poor one, and that the Jiangyin and Tiansheng Stations have a high water level term and a low one under the influence of runoff, and the wusong Station had another high water level in the period of 1972-1980 under the influence of additional flow influx from the East China Sea. However, there is neither long-term increase nor long-term decrease tendency on water lever in every station.Finally, a relationship between monthly mean rate of flow and monthly mean water level is set up, and can be used for adjusting the daily and ten-day tide forecast in every station.

参考文献：

[1] 黄忠怒,波谱分析方法及其在水文气象中的应用,气象出版社,1983年. [2] 丁士晟,多元分析方法及其应用,吉林人民出版社,1981年. [3] 沈焕庭、平均海面研究的意义和计算方法,海洋科学,1982年,第三期. [4] 蒋大宋,张文修,数值诊断的统计方法,陕西科学技术出版社,1981年.

服务与反馈：

【文章下载】【发表评论】【查看评论】【加入收藏】