中国海图深度基准面的历元及确定方法

发布时间：2018-02-16 19:33

本文关键词： 海图深度基准面深度基准面历元理论深度基准面　出处：《测绘地理信息》2016年02期 　论文类型：期刊论文

【摘要】：分析了目前中国海区海图深度基准面的现状,论证了用19a作为我国海图深度基准面历元周期的合理性,克服了不同时期数据海图深度基准面变动误差较大的弊端。并以10个主要长期验潮站为例,用调和分析方法分别以1a、18.61a及19a不同时间长度的潮汐观测序列,计算出对应的深度基准面,分析每19a调和分析结果数据所计算的理论深度基准面的稳定性,充分评估了每19a调和分析结果数据所计算的理论深度基准面的精度。为使所得海图深度基准面能够在一定时期内准确反映平均海面的变化,提供准确的深度基准面信息,提出了定期进行更新的思想。
[Abstract]:The present situation of depth datum of Chinese sea chart is analyzed, and the reasonableness of using 19a as the epoch period of depth datum of Chinese sea chart is proved. This paper overcomes the shortcoming that the variation error of depth datum level of nautical chart in different periods is large, and taking 10 main long-term tidal stations as an example, the tidal observation sequences with different length of time of 1a, 18.61a and 19a are used by harmonic analysis method, respectively. The corresponding depth datum level is calculated, and the stability of theoretical depth datum calculated by harmonic analysis data every 19 years is analyzed. The accuracy of the theoretical depth datum calculated by the results of the harmonic analysis every 19 years is fully evaluated. In order to make the obtained depth datum accurately reflect the variation of the mean sea level and provide accurate depth datum information, The idea of updating regularly is put forward.
【作者单位】：海军出版社;海军大连舰艇学院;
【基金】：国家自然科学基金资助项目(41374108;41476087;41576105)~~
【分类号】：P229.2

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