夏季舟山桃花岛海域水文特征分析  

Hydrological Characteristics Analysis in Summer over the Taohua Island Aea Area, Zhoushan

作　　者：郑衡[1] 郑红[1] 童元正[1] 杨凡[1] 

机构地区：[1]浙江海洋学院海洋科学与技术学院,浙江舟山316022

出　　处：《浙江海洋学院学报（自然科学版）》2015年第5期424-428,共5页Journal of Zhejiang Ocean University(Natural Science Edition)

基　　金：国家海洋局2015年海洋公益性行业科研专项经费项目(20150525)

摘　　要：观测并研究桃花岛海域海洋动力学基本参数,对了解舟山桃花岛海域水文环境和进一步长期观测研究舟山海域上升流的形成机制,及其对舟山海域的环境影响具有重要意义。基于2014年6月末的桃花岛海域实地观测数据及相关资料,通过对CTD(温盐深仪)、ADCP(声学多普勒流速剖面仪)以及相关潮汐、气象数据的分析研究表明,夏季桃花岛海域海水盐度具有潮汐周期性,符合沿岸海区海水盐度的日变化规律。近岸海域受潮汐混合的影响,落潮时冲淡水和海水混合不太明显,而涨潮的时候(停潮之后的一两个小时)由于淡水与海水的垂向混合导致温盐垂向变化不明显。另外受地形的影响,桃花岛海域局部海区淡水与海水的混合基本不受涨落潮的影响始终保持强烈的混合现象。Observation and study the basic parameters of marine dynamic over the Taohua island sea area has great significance of realizing its hydrological environment and to further understand the upwelling in this sea area. Based on the observation data and relevant information, through the analysis of the CTD data, ADCP data, tidal data and meteorological data show that the water salinity in Taohua island sea area has the tidal cyclical, and accords with the daily variation law of coastal ocean salinity. Inshore areas influenced by tidal mixing, when it is a ebb tide the mixing between the freshwater and seawater is not obvious, and when it is a flood tide due to vertical mixing of the freshwater and seawater the vertical change of thermohaline is not obvi- ous. In addition to the influence of the terrain, the mixing phenomenon in a partial of the sea area always stay strong.

关 键 词：温度 盐度 潮汐混合 海底地形 

分 类 号：P731[天文地球—海洋科学]