北部湾海域潮汐特征研究

A AsStudy on the tidal characteristics in the gulf of Tonkin Gulf

潮汐在民生、经济、国防安全等方面都有着重大重要的意义,掌握潮汐规律是开展海洋事业的先决条件之一。本文根据夏威夷大学水位中心公布的4个长期验潮站(东方站、北海站、Hon Dau-A站和Vung Ang站)以及一个临时实测站(白龙尾站)各1a连续数据,利用Ttide程序包提取调和常数,解算北部湾沿海的潮汐特征值,得出如下结论:研究海域以规则全日潮为主,仅Vung Ang站为不规则全日潮;研究区域半日分潮以M2分潮为主,北海位置M2分潮最大,全日分潮以O1为主;平均潮差H1在Hon Dau-A站最大,Vung Ang站最小;对于最大可能潮位H2,北海站最大,Vung Ang站最小;日潮不等现象仅Hon Dau-A站比较明显,其高潮和低潮均日不等;在涨落潮历时方面,Hon Dau-A相差1h左右,其余站相差不大;Hon Dau-A和Vung Ang涨潮历时长于落潮历时,其余站相反。

Tide is of great significance in people’s livelihood, economy, security and national defense among others, etc. To master the law of tides is one of the prerequisites for the development of marine undertakings. According to the records of the university of Hawaii sea level center released four long-term tide stations(Dongfang station, Beihai station, Hon Dau-A station and Vung Ang station) released by the Sea Level Center, Hawaii University, and an one year record of a temporary station(Bailongwei station) with 1 a long record, we used ing Ttide package to extract harmonic constants and c, calculate ing the tidal characteristic values in the Gulf of Tonkin Gulf., wWe have withdrawn obtain the following conclusions.: the The research sea is given the priority to with rules diurnal tide. O, only Vung Ang stands for irregular diurnal tide.;tThe semi-diurnal tide is mainly divided into M2, and the M2 tide is the largest at in the Beihai station, and the diurnal tide is mainly divided into O1. The mean tidal range H1 is the largest at in Hon Dau-A station and the smallest at in Vung Ang station. For the maximum possible tidal level H2, Beihai station wasis the largest and Vung Ang station wasis the smallest. Diurnal tide inequality was only evident atin Hon Dau-A station, with diurnal high tide and low tide. In terms of the duration of fluctuation tide, Hon Dau-A wasis about 1 h different, while the rest stations wereare similar each othernot too different. Hon Dau-A and Vung Ang high tide lasted s longer than low tide did while, the other rest stations performed are oppositely.