乐清湾潮汐时空分布特征  

Temporal and spatial variations of the tide in the Yueqing Bay

作　　者：姚玉娟[1] 张福星[1] 韩小燕[1] 林顺利[1] 周浩[2] 

机构地区：[1]国家海洋局温州海洋环境监测中心站,浙江温州325013 [2]温州市海洋与渔业局,浙江温州325000

出　　处：《海洋预报》2016年第2期53-59,共7页Marine Forecasts

摘　　要：利用乐清湾3个潮位站多年长期观测资料,分析了乐清湾海域潮汐特征值、平均海平面、高潮位的分布特征。分析结果表明:乐清湾海域潮汐呈现明显的时空分布特征:自湾口至湾顶,浅海效应逐渐增强,平均海平面先减小后增大,高潮位值随着深入湾顶依次递增;平均海平面年内分布表现为驼峰特征,主峰出现在秋汛9月份邻近时段,次峰则出现在6月份左右;3个测站相同月份累年月极值出现分别为同一系统影响所致,且相关性较好,这对于在江厦站潮位资料获取受限的情况下,做好乐清湾顶风暴潮预警报发布工作具有重大意义。Variability of the tidal characteristic value, the mean sea level and the high tidal level were studied based on the long-term observed data from the three tidal stations in the Yueqing Bay. The results indicate that the tide in the studied area has significant temporal and spatial variations. From the mouth to the head of the bay, the shallow water effect gradually strengthens, and the mean sea level decreases firstly and then increases, while the high tidal level value increases with closing to the head of bay. The mean sea level has double peaks in one year,with the main peak in September and the second peak in June. The monthly extreme values at the three tidal stations were caused by the same weather systems in different months. Moreover, the monthly extreme values also have high correlations among the three tidal stations, which has important significance in studying the tide storm in the head of the Yueqing Bay, because of the limited observation data at the Jiangxia tidal station.

关 键 词：乐清湾 潮汐特征值 平均海平面 高潮位 时空分布特征 

分 类 号：P731.23[天文地球—海洋科学]