Tidal elevation, current and energy flux in the area between the South China Sea and Java Sea
Tidal elevation, current and energy flux in the area between the South China Sea and Java Sea
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DOI：
10.5194/os-12-517-2016
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发表时间：
2015-11
期刊：
影响因子：
3.2
通讯作者：
Zexun Wei;G. Fang;R. Susanto;T. R. Adi;Bin Fan;A. Setiawan;Shujiang Li;Yonggang Wang;Xiumin Gao
中科院分区：
文献类型：
--
作者：
Zexun Wei;G. Fang;R. Susanto;T. R. Adi;Bin Fan;A. Setiawan;Shujiang Li;Yonggang Wang;Xiumin Gao
抽象的。南中国海和爪哇海通过卡里马塔海峡、加斯帕海峡和纳土纳海南部相连，在那里潮汐经常被用作南海或印度尼西亚海潮汐模拟的开放边界条件。利用现场观测资料，分析了本区5个测站K1、O1、Q1、M2、S2和N2的潮汐、潮流和潮汐能通量。结果表明，日潮汐是整个研究区的主导成分。K1分量的振幅最大，超过50厘米，而M2分量的振幅在所有台站都小于5厘米。在卡里马塔海峡和加斯帕海峡，S2的振幅可能超过M2。本区潮流多为直线型。日潮流椭圆的半长轴长度约为10 cm S−1，小于5 cm的S−1。日潮流能量从南海流向JS。半日潮能量通过卡里马塔海峡和纳土纳海南部东部流向JS，而在加斯帕海峡和纳土纳海南部西部流向相反方向。海平面和海流观测的调和分析还表明，研究区位于全日潮波的反节点带和半日潮波的节带。对比表明，现有模型与观测结果基本一致，但仍需进一步改进。
Abstract. The South China Sea (SCS) and the Java Sea (JS) are connected through the Karimata Strait, Gaspar Strait, and the southern Natuna Sea, where the tides are often used as open boundary condition for tidal simulation in the SCS or Indonesian seas. Tides, tidal currents, and tidal energy fluxes of the principle constituents K1, O1, Q1, M2, S2, and N2 at five stations in this area have been analyzed using in situ observational data. The results show that the diurnal tides are the dominant constituents in the entire study area. The constituent K1 has the largest amplitude, exceeding 50 cm, whereas the amplitudes of M2 are smaller than 5 cm at all stations. The amplitudes of S2 may exceed M2 in the Karimata and Gaspar straits. Tidal currents are mostly of rectilinear type in this area. The semi-major axes lengths of the diurnal tidal current ellipses are about 10 cm s−1, and those of the semidiurnal tidal currents are smaller than 5 cm s−1. The diurnal tidal energy flows from the SCS to the JS. The semidiurnal tidal energy flows from the SCS to the JS through the Karimata Strait and the eastern part of the southern Natuna Sea but flows in the opposite direction in the Gaspar Strait and the western part of the southern Natuna Sea. Harmonic analysis of sea level and current observation also suggest that the study area is located in the antinodal band of the diurnal tidal waves, and in the nodal band of the semidiurnal tidal waves. Comparisons show that the existing models are basically consistent with the observational results, but further improvements are necessary.