CAJ | 학술논문

迄今由于缺乏高精度的实测水深数据，对台湾浅滩沙波的精细结构缺乏详细的阐述。本文基于多波束实测资料研究台湾浅滩沙波形态的精细特征及其分布规律。多波束探测结果显示：研究区沙波的平均波高达到13．5 m，沙波波峰处水深为20．42 m，沙波平均波高约为水深的2／3，沙波的波长大多数处于500～700 m 之间。研究区内主要发育3种类型的沙波，即摆线型沙波、余弦型沙波和双峰型沙波。研究区西部主要发育双峰型沙波，中部则主要发育余弦型和摆线型沙波，而东部主要发育摆线型沙波，整个区域以摆线型沙波为主。海平面波动、台湾海峡复杂的水动力条件以及台湾岛丰富的山溪河流携带的大量沉积物进入海峡，对浅滩区的沙波具有强烈的改造作用。
흘금유우결핍고정도적실측수심수거，대태만천탄사파적정세결구결핍상세적천술。본문기우다파속실측자료연구태만천탄사파형태적정세특정급기분포규률。다파속탐측결과현시：연구구사파적평균파고체도13．5 m，사파파봉처수심위20．42 m，사파평균파고약위수심적2／3，사파적파장대다수처우500～700 m 지간。연구구내주요발육3충류형적사파，즉파선형사파、여현형사파화쌍봉형사파。연구구서부주요발육쌍봉형사파，중부칙주요발육여현형화파선형사파，이동부주요발육파선형사파，정개구역이파선형사파위주。해평면파동、태만해협복잡적수동력조건이급태만도봉부적산계하류휴대적대량침적물진입해협，대천탄구적사파구유강렬적개조작용。
Lack of accurate multi-beam bathymetric data,publications on meticulous characteristics of sand wave on Taiwan bank are rare.For this reason,the paper presents an approach to objectively analyze large number of sand waves on their meticulous shape characteristics and distribution using multi-beam bathymetric data.The results show that the average of wavelength of sand wave is up to 13.5 m,which is the about 2/3 of the depth of the wa-ter,the depth is 20.42 m at the crest of sand wave and the range of the wavelength is almost between 500 m and 700 m.Three types of sand wave are found,which are trochoidal sand wave,sinusoidal sand wave and bimodal sand wave.The occurrence on the west of the bank is bimodal sand wave,the middle is trochoidal sand wave and sinu-soidal sand wave.The whole of bank is almost trochoidal sand wave.The influence factors of sand wave are varia-tion of sea level,the long-term sediment flux from Western Taiwanese rivers and hydrodynamic in Taiwan Bank.