一种验潮室内读数指针的高精度水准测量方法  

A High-Precision Leveling Method for Reading Pointer in Tidal Chamber

作　　者：谭泽琼 王浩展 刘涛荣 娄全胜[1] TAN Zeqiong;WANG Haozhan;LIU Taorong;LOU Quansheng(Sansha Marine Environmental Monitoring Central Station,State Oceanic Administration,Haikou 570311,China)

机构地区：[1]国家海洋局三沙海洋环境监测中心站,海南海口570311

出　　处：《海洋信息技术与应用》2022年第4期12-16,共5页JOURNAL OF MARINE INFORMATION TECHNOLOGY AND APPLICATION

摘　　要：自20世纪中期以来,我国沿海陆续设立验潮站,观测记录各海区站点每天潮汐变化,以探究潮汐特征、海平面变化等。读数指针是验潮站内比对自动化验潮仪读取潮汐数据的井内水尺刻度读数标识,由于室内的验潮仪浮子系统与井内水尺的浮子系统共用同一个验潮井,易受验潮井内泥沙淤积、海洋生物附着等因素影响,其与井外水尺零点的高程关系对于核实潮汐数值的准确性至关重要。由于早期验潮站建设年代久远,各验潮站的读数指针标识构造类型不同,传统测量将水尺置于读教指针处读取高程值,仅可满足海洋观测规范四等水准测量的要求。为提高潮汐观测精度,更好地服务于预报、海平面变化等相关研究,本文提出一种轻便的能够适应不同类型读数指针的水准测量方法,经实验测试,能满足二等水准测量要求。Since the middle 20th century,tidal gauge stations have been set up along the coast of China to observe and record the daily tidal changes at stations in various sea areas,and to explore tidal characteristics and sea level changes,etc.Because the float system of the indoor tide gauge and the float system of the water gauge in the well share the same tide gauge well,it is vulnerable to the influence of factors such as sediment deposition in the tide gauge well and the adhesion of marine organisms.The elevation relationship between the reading pointer and the zero point of the water gauge outside the well is very important for verifying the accuracy of the tide data.Since the early tide gauge stations were built for a long time,and the reading pointer of each tide gauge station has different structure types,the traditional measurement is to place the water gauge at the reading pointer to read the elevation value,which can meet the requirements of the fourth-class leveling in the marine observation specification.To improve the accuracy of tidal observation and better serve the prediction,sea level change and other related research,this paper proposes a lightweight leveling method which can adapt to different types of reading pointers.Through experimental test,it can meet the requirements of second-class leveling.

关 键 词：水准测量 读数指针 验潮站 高精度 

分 类 号：P714[天文地球—海洋科学]