摘要
利用辽东湾JZ2 0 2海域冰期气象、水文和海冰的测量资料 ,对冰面太阳辐射、长波辐射、感热、潜热、冰内热传导和冰下海洋热通量等热力要素的计算方法进行了讨论 ,并对其中的部分参数进行了确定 ;对 1997～1998年度不同天气条件和不同冰期的海冰热力要素进行了对比分析 ,发现太阳辐射的主要影响因素为云层 ,冰面感热主要受控于风速和气温 ,而长波辐射变化量不大 ;不同风向时的相对湿度差别很大 ,并直接影响到冰面潜热的大小 ;海洋热通量在初冰期最大 ,可达 2 0 0W/m2 以上 ,然后逐渐降低 ,在融冰期接近于 0。另外 ,气温 (冰面感热 )、太阳辐射和海洋热通量的变化决定了辽东湾海冰的生消规律。
The calculation methods of sea ice heat fluxes are presented considering the characteristics of the Bohai sea ice firstly. Based on the hydrological, meteorological and sea ice data observed on the JZ20-2 platform in the Liaodong Bay, some parameters of thermodynamics model were determined. From the heat fluxes calculated under the different weather conditions and at different date, the influences of meteorological factors were analyzed, and the air temperature, the oceanic heat flux and the solar radiation control the growth and decay of sea ice. Through the thermodynamics analysis of the Bohai sea ice, some mechanisms of sea ice growth are understood deeply, which may be significant to the sea ice numerical simulation.
出处
《海洋环境科学》
CAS
CSCD
北大核心
2000年第3期35-39,共5页
Marine Environmental Science
基金
国家自然科学基金
中国海洋石油渤海公司联合资助!重点项目 (5 9739170 )
