摘要
通过对 1 997年 8月台湾浅滩南部边缘两站位多周日 (分别为 72和6 0h)实测数据的分析 ,对温、盐的多周日变化及其形成机制进行了探讨。认为 :表层温度主要由当地的太阳辐照度和表层流况所决定 ,表层的盐度主要由表层流况决定 ,表层的温、盐变化的周日重复性较差 ;由于台湾浅滩南部海区存在着陆架 /陆坡锋面 ,而测站恰好处于锋面中 ,在潮汐的调制下该锋面做横向摆动 ,从而导致不同物理性质的水体交替占领测站 ,导致各层次产生温、盐跃变。除某些层次在部分时段具有较好的周日重复性以外 ,其它层次和时段的周日重复性都较差。
Through analysis on multi days(72 and 60 h respectively) measured data from two investigation stations in the southern marginal area of the Taiwan Shoal in the middle August 1997, we get the multi days variation rules of temperature and salinity, and deduce the forming mechanism. It's concluded that: surface temperature is controlled by local irradiation of the sun and surface currents, while surface salinity mainly by surface currents. Both temperature and salinity of the surface layer don't have good recurrent tendency. A shelf/slope front exists in the area south to the Taiwan Shoal and moves horizontally under the action of tide, which causes sea waters with different characters to occupy those stations alternately and furthermore makes temperature and salinity vary abruptly in different layers. The recurrent phenomenon usually does not appear in most layers except it sometimes appears in some layers.
出处
《台湾海峡》
CAS
CSCD
2000年第1期89-94,共6页
Journal of Oceanography In Taiwan Strait
基金
国家自然科学基金重点资助项目!(496 36 2 2 0号 )
