摘要
基于夏季渤海湾中北部312个站位的悬浮体观测资料,细致刻画了夏季该海域的悬浮体浓度的分布特征,并分析其形成原因。渤海湾中北部悬浮体水平分布表现出近岸高、远岸低,底层高、表层低的分布趋势。悬浮体体积浓度的垂直分布表现为两种类型：渤海湾的西部和中部的浅水海域,由表至底悬浮体的体积浓度逐渐增大;渤海湾湾口海域表底层附近的悬浮体体积浓度随深度变化不大,但在10-15 m深度处出现极大值。悬浮体体积浓度这种垂直分布的差异性与温跃层的存在有关。温跃层内水体层结稳定,海水垂直扩散系数小,导致颗粒物和营养盐富,生物体聚集,进而使得观测得到的悬浮体体积浓度在该层内出现峰值。
Based on the data collected at 312 stations in the northern Bohai Bay during summer,horizontal and vertical distribution of SPM concentrations were described in this paper.The mass concentrations of SPM exhibits a horizontal distribution with high values inshore and at bottom and low values offshore and on the surface,In the vertical direction,the volume concentration of SPM can be divided into two types： one with a sharp peak at depth of 10 to 15 m and the other without the peak.The peak at the thermocline depth was supposed to be caused by accumulation of biological matters as a result of rich nutrients trapped by water of low diffusion.
出处
《海洋地质与第四纪地质》
CAS
CSCD
北大核心
2010年第3期23-30,共8页
Marine Geology & Quaternary Geology
基金
国家自然科学基金项目(40906025)
"908"海底底质调查与研究(908-01-CJ02-01)
国家重点基础研究发展规划项目(2005CB422304)
关键词
悬浮体
温跃层
夏季
渤海湾
suspended particulate matters
thermocline
summer
Bohai Bay
