棉兰老流与棉兰老潜流季节内变化研究Intraseasonal Variability of the Mindanao Current and the Mindanao Undercurrent
杨蓓蓓,林霄沛
摘要(Abstract):
通过分析HYCOM(HYbrid Coordinate Ocean Model)数据,得出棉兰老流(MC)位于0~800m深度,紧贴岸界,最大流速发生在次表层。棉兰老潜流(MUC)位于400m深度以下,127°E以东离岸侧,最大流速发生在1 600m深度处。MUC的流核数目在12个月的分布不尽相同,大概在1~3个,其中存在2个流核的月份最多;MUC各个流核在不同月份的核心强度有明显变化,5月份流核核心速度最大,可达10cm·s~(-1);MUC各个流核的纬向剖面面积也有明显的季节变化,2月份的剖面面积最大。从季节内变化上看,MUC与MC都存在较明显的季节内变化信号,周期在100d左右。MC的季节内变化是由海表面涡旋引起的,而MUC的季节内变化是由温跃层以下的涡旋引起的。
关键词(KeyWords): 棉兰老流;棉兰老潜流;季节内变化特征;HYCOM
基金项目(Foundation): 国家重大科学研究计划项目(2013CB956202)资助~~
作者(Author): 杨蓓蓓,林霄沛
DOI: 10.16441/j.cnki.hdxb.20150325
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