赤湾验潮站搬迁前后潮位变化特征及其订正

赤湾海洋站是国家海洋局在深圳西部海域唯一的潮汐观测站点,至今已观测30多年。由于地理位置特殊,2008年起该站被选为《中国海平面公报》反映珠江口海平面变化的代表站。2012年10月该站搬至新验潮站,受此影响,其潮位观测序列产生了差异性和不连续性。本文通过计算机编程实现了对海洋站水文气象数据的质量控制。同时,采用赤湾站与邻近验潮站进行对比的方法得出新旧站的潮位差值,初步探讨了搬站前后潮位观测结果的订正方案,并研究其建站以来的历史海平面变化特征。这对确保该站潮位资料的准确性及代表性具有重要意义,同时也为珠江口海域防灾减灾、涉海工程、风暴潮预报等提供了数据支撑。

Influence of Site Change on Tidal Observation at Chi-wan Station and the Changing Characteristics

Chi-wan is the only tide gauge station of SOA(State Oceanic Administration)that locates on the west coast of Shenzhen.Until now.more than 30 years of observations have been recorded.Due to its special location.Chi-wan station has been elected as the representative reflecting sea level change of the Pearl River estuary for"China Sea Level Bulletin"since 2008.Quality control of the tide gauge data is implemented through computer programming.By comparing data at the Chi-wan station to those at the nearby stations,tidal level differences between the new and old stations are obtained.Based on analyzing environmental change of this station,data revising schemes for the tide gauge observation are discussed,and the historical sea level changing characteristics are investigated.This is of important sig nificance for the accuracy and representativeness of the tide gauge data at this station,which provides data support for disaster prevention mitigation,ocean engineering,and storm prediction over the Pearl River estuary.