VERTICAL DISTRIBUTION FEATURES of TEMPERATURE AND SALINITY IN THE NORTHERN TAIWAN STRAIT DURING FEBRUARY-MARCH, 1998

根据1998年2~3月台湾海峡北部海区的CTd资料，进行温、盐垂直分布特征的 分析，同时根据温、盐垂直分布特征进行海域温、盐特性的区划。结果表明，在研究海域的西 侧，温、盐的垂直分布具有层化结构；在研究海域的东侧，温、盐垂直均匀一致，且呈高温高 盐。The vertical distribution features of temperature and salinity in the Northern Taiwan Strait have been analysed based on the CTD data during February-March, 1998.The regional characteristics of the temperature and salinity shows stratified structure in the western sea area but homogeneous in the eastern sea area.国家自然科学基金!19636220

Sectional Features of Temperature and Salinity in the Northern Taiwan Strait During February March, 1998

根据1998年2~3月台湾海峡北部海区的CTd资料，进行温、盐断面分布特征的分析，结果表明：在研究海区的西部，上层存在一支低温低盐的沿岸水，使得各断面中的等温线和等盐线均向岸下倾；在研究海区的东部，温、盐呈垂直均匀，而且具有高温高盐的特性.The sectional features of temperature and salinity in the northern Taiwan Strait have been analysed by using the CTD data during February March, 1998.The results show that: (1) there exists a low temperature and low salinity water at the upper layer in the western sea area of the studied area; (2) there is a high temperature and high salinity water in the eastern sea area.国家自然科学基金重点资

ANALYSIS of DAILY VARIATION PROCESS of TEMPERATURE AND SALINITY IN THE CENTRAL AND NORTHERN TAIWAN STRAIT IN FEBRUARY-MARCH 1998

本文分别对位于台湾海峡中部和北部两个连续观测站1998年2~3月的CTd资料进行分析，认为北部测站在观测期间经历了低温、低盐水入侵的过程，但此过程只显著影响到30M层，温盐垂直结构有时出现单跃层，有时出现阶梯结构；而中部测站盐度垂直均匀，温度垂直梯度也较小，已不受闽浙沿岸水的影响。Through an analysis on the CTD data from two time series anchored stations in the central and northern Taiwan Strait during February - March 1998, it is concluded that: the vertical structure of temperature and salinity at the northern station and the central station can be classified into 2 types, respectively; the northern station undergoes an invasion process of low temperature and low salinity water during the period of investigation, but the remarkable effect can only be seen at 0-30m depth; and the central station can not be affected by the Minzhe Coastal Water.国家自然科学基金重点项目资助!4963622

Analysis on Features of Temperature and Salinity in the Northern Taiwan Straits During February-March, 1998

根据1998年2~3月台湾海峡北部海区的CTd资料,进行各层次温度、盐度平面分布特征的分析,得到研究海区调查期间温、盐水平分布的以下几个特征:(1)在台湾海峡的西岸,存在一支由东北向西南流动的海水,其上层具有较低的温度和盐度;(2)在海峡的东部海域,有一支由西南向东北沿岸流动的海水,具有高温高盐的特性,可以向北延伸到26°n附近海域.The distributional features of temperature and salinity in the northern Taiwan Straits have been analysed based on the CTD data during February - March, 1998.The characteristics of temperature and salinity are summarized as follows: (1) there exists a coastal water along the western coast of the Taiwan Straits , with low temperature and low salinity in the upper layer; (2) a high temperature and high salinity water tongue extends northeastward along the eastern coast of the Taiwan Straits.国家自然科学基金重点项目资助(项目号:49636220

ANALYSIS ON THE MULTI-DAYS CHANGE OF OPTICAL PARAMETERS IN THE SOUTHERN MARGINAL AREA OF THE TAIWAN SHOALS IN AUGUST 1997

通过对1997年8月中旬在台湾浅滩南部边缘海域所获得的光学参数数据进行分析 ,对水下辐照度、光束衰减率和光束透射率等主要光学参数的多周日变化规律及其形成机制进行了探讨。认为调查期间 ,台湾浅滩南部的水下辐照度自上而下表现出了很好的规律性和一致性 ,各层的辐照度随时间呈峰谷型分布 ,与太阳辐射强度规律符合得较好 ;不同时刻的光束衰减率的垂直分布基本相似 ,往往在30m层上下出现一个峰值。光束透射率与光束衰减率存在反相关系Through analysis on the optical parameter data obtained in the southern marginal area of the Taiwan Shoals in the middle August 1997, we get the multi days change rules of some main optical parameters such as underwater irradiance, optical attenuation and transmission, and deduce the forming mechanism. During the investigation period, the variation of underwater irradiance in this area is regular and consistent from upper layer to lower layer, with peak valley alternatively distributional feature, which accords with the irradiation of the sun. The vertical distribution of attenuation is similar, usually having a peak value at about 30 m layer.国家自然科学基金重点资助项目!49636220

Multi-days variation of temperature and salinity in southern marginal area of Taiwan Shoal in August 1997

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.国家自然科学基金重点资助项目!(496 36 2 2 0号

Vertical Structures of Temperature and Salinity in the Southern Taiwan Strait in August, 1997

对台湾海峡南部海区 1 997年 8月的 CTD资料进行了温、盐垂直结构分析。结果表明 :大部分调查海域存在温、盐跃层 ;台湾浅滩南部和东南部海域的温、盐垂直结构较为复杂 ,这与多种水系在此交汇有关 ,但下层海水的低温高盐特性仍表明这一海域是上升流区 ;泉州外海的下层存在低温高盐海水的爬升 ,但没有影响到表层。The vertical structures of temperature and salinity in the southern Taiwan Strait were analyzed based on the CTD data collected during August, 1997. The results are: (1) there exist thermocline and halocline in most of the studied area; (2) the vertical structures of temperature and salinity are complicated in the sea areas south and southeast of the Taiwan Shoal, which is caused by the confluence of different water systems there, but the low temperature and high salinity features of the lower layer water indicate the upwelling in the sea area; (3) the low temperature and high salinity water ascending was found in the lower layer off Quanzhou but didn′t influence the surface layer.国家自然科学基金重点项目资助!( 4963 62 2 0 );; 福建省科技资助项目!( 98-Z-1 79

Time Series Variation of Vertical Distributions of Temperature and Salinity in Two Anchored Stations in Southern Taiwan Strait in August, 1997

根据台湾海峡南部 2 个定点多周日观测站 1997 年 8 月的 C T d 资料，进行温、盐垂直分布时间变化的分析，结果表明：二测站调查期间基本上都存在温、盐跃层，跃层的强度和深度随时间变化较大，显示出较为复杂的温、盐垂直分布，与多种水系在此交汇有关.但二测站的下层稳定地存在低温高盐的海水，有向上涌升的趋势，并受潮流的影响，可见其所在的海域应为上升流区Time series variations of the vertical temperature and salinity distributions in two anchored stations in the southern Taiwan Strait have been analysed based on the CTD data during August, 1997.The results are: (1) there existed thermocline and halocline in the sea areas around two anchored staions, the strength and depth of which varied pronouncedly from time to time because of the interaction among the currents there; (2) low temperature and high salinity water can appear in the lower layer of the two studied stations, which was affected by the tidal currents,indicating the existence of the upwelling there.国家自然科学基

The Characteristics of Tidal Current and Residual Current in the Southern Taiwan Strait in August,1997

根据1997年8月中旬台湾浅滩东南部和南部两个多周日定点连续观测站的海流和CTd实测资料，分析了该海区调查期间的半日潮流、余流的特征.结果表明：该海区潮流为不正规半日潮流，并且半日潮流与潮位的关系和驻波的某些性质相符；同时上、下层海流具有不同性质，其中台湾浅滩东南部测站位于锋面所在处，表层海流流速达65.5CM/S，流向EnE.Based on the three day′s time series measured current data obtained in the southeastern and southern of the Taiwan Shoal in August, 1997, we analyze the characteristics of the residual current and semi diurnal tidal current during the surveying period.The results are as follows: the characteristics of currents are not the same at the surface layer, intermediate layer and lower layer; and the tidal wave shows the characteristics of the standing wave; and the tidal current is an irregular semi diurnal tidal current. The measure stations for the southeastern of the Taiwan Shoal are located at the shelf front, where the residual current is up to 65.5 cm/s with the direction of ENE.国家自然科学基金重点资

Analysis on Distribution Features of Temperature and Salinity in the Southern Taiwan Strait in August,1997

根据1997年8月中旬台湾海峡南部海区的CTd资料，分析该调查海区温度、盐度的分布特征.其结果表明：1）温、盐垂直分布主要存在单跃层、双跃层及均匀分布3种类型；2）南澳近岸及台湾浅滩南部和澎湖以北海域存在上升流Distribution features of temperature and salinity have been analyzed by using the CTD data in the southern Taiwan Strait during the cruise in August,1997.The results show that there are 3 types of vertical TS distribution in the studied areas and there exist upwelling in the sea areas nearshore of Nanao,south of Taiwan Shoal and north of Penghu Islands.国家自然科学基