摘要
2003年9月国家海洋环境监测中心对皮口至大长山岛海域进行了海洋资源综合调查与评价。取表层沉积物样90余个,3柱柱状样,通过实验室分析,将表层沉积物类型及其分布特征进行分析,并应用210Pb测年技术,测得调查区海域现代沉积物的堆积速度,探讨其沉积物的沉积速率。结果表明,该区表层沉积物类型以细颗粒沉积为主,具有淤泥质岸带的沉积特征。210Pb测得沉积速率揭示出测区的北岸潮滩区高于水下岸坡也高于大长山岛北侧近岸海域。该区物质来源丰富,沿岸鸭绿江、大洋河、碧流河、和庄河携带的泥沙严格控制了沉积物类型的分布特征。
In Sep. 2003, the comprehensive survey and estimate of ocean resources from Pikou to Dachangshan Island were carried out. More than ninety and three core sediment samples were collected. The bottom sediment type and its distribution feature from Pikou to Dachangshan Island area were analyzed. Using 210pb dating, rates of the modem sediment accumulation in the sea area were determined. In addition, the sedimentation speed was discussed. The results showed that fine particle sediment type is the main sediment type, which has the sedimentation characteristics of silt shore belt. It is revealed that the settling rate by 210pb dating in north tidal beach is larger than in both coastal slope beneath and north Dachangshan Island area. The mud and sand from coastal Yalujiang River, Dayang River, Biliu River and Zhuanghe River is an important role in the distribution of sediment type in the research sea area.
出处
《海洋环境科学》
CAS
CSCD
北大核心
2007年第1期71-73,共3页
Marine Environmental Science
关键词
沉积类型
沉积速率
分布特征
sediment type
settling rate
distribution feature
