基于NAO.99b资料对南海主要岛礁潮汐特征的分析  

Tidal characteristics analysis of main islands,reefs and shoals in South China Sea by NAO.99b data

作　　者：谢石建 朱首贤[1] 马疆[1] 张瑰[2] 张文静[3] 

机构地区：[1]河海大学港口海岸与近海工程学院,江苏南京210098 [2]解放军理工大学理学院,江苏南京211101 [3]解放军理工大学气象海洋学院,江苏南京211101

出　　处：《解放军理工大学学报（自然科学版）》2015年第6期593-599,共7页Journal of PLA University of Science and Technology(Natural Science Edition)

基　　金：国家自然科学基金资助项目(41206163;41076048);中央高校基本科研业务费资助项目(2011B05714)

摘　　要：为了详细地认识南海岛礁潮汐特征,基于大洋潮汐模式NAO.99b的全球8个分潮（M_2、S_2、N_2、K_2、K_1、O_1、P_1、Q_1）调和常数资料建立南海潮汐计算模型。利用该模型计算南海主要岛礁2010年逐分钟的潮位,得出了这些岛礁的最大潮差、平均潮差、平均高潮间隙和潮汐特征系数。结果表明：南海岛礁绝大部分为不正规日潮型,潮汐特征系数在2.98~4.34;在半个月中,有连续六七天为每日2个高低潮。平均高潮间隙整体从南海东北部往西南部逐渐增大,范围为8.32~11.63h,曾母暗沙为1.57h;平均潮差和最大潮差从南海东北部向西南部逐渐增大,平均潮差变化范围为65~92cm,最大潮差变化范围144~200cm。A tide calculation model was built with the 8global grid-point tidal harmonic constants（M2,S2,N2,K2,K1,O1,P1 and Q1）of ocean tide model NAO.99 bto analyse the tidal characteristics of the islands,reefs and shoals in the South China Sea.The maximum tidal range,mean tidal range,mean high water interval and tidal characteristic coefficient at these islands,reefs and shoals were obtained from the calculated tide level every minute in 2010.The main conclusions are：Most of the islands,reefs and shoals are irregular diurnal tides,tidal characteristic coefficient is 2.98~4.34.There are 2high tides and 2low tides in continuous 6~7days half a month.The mean high water interval increases from northeast to southwest of the South China Sea.The mean high water interval at these islands,reefs and shoals is 8.32~11.63 hours,but it is 1.57 hours at Zengmu Shoal.The mean tidal range and maximum tidal range at these islands,reefs and shoals increase from northeast to southwest of the South China Sea,with the former being 65~92cm,the latter being 144~200cm.

关 键 词：南海 岛礁 潮汐特征 NAO.99b资料 

分 类 号：P741[天文地球—海洋科学]