摘要
结合１９９８年２～３月台湾海峡的ＳｅａＷｉＦＳ水色数据与现场观测Ｃｈｌａ数据，对遥测与实测数据进行了初步的对照分析，同时比较了遥测与实测叶绿素的分布状况，以期利用丰富的水色遥感信息掌握海域叶绿素的时空变动，进而进行海域初级生产力的研究。分析结果表明，ＳｅａＷｉＦＳ水色数据与现场实测数据的相关性良好（ｒ２＝０．８１，ｎ＝７），初步说明， ＳｅａＷｉＦＳ水色数据能够在相当程度上反映海域的实际Ｃｈｌａ含量；另一方面，遥测叶绿素在海峡西侧的含量高于东侧，东侧叶绿素在澎湖以北含量较高，综合历史资料可以推测，闽浙沿岸水对营养盐的输送、贫瘠的黑潮水自海峡南部的入侵是造成这一分布状况的主要原因。黑潮水经由澎湖水道进入海峡的现象在ＳｅａｗｉＦＳ图像上得到佐证。
Four pieces of SeaWiFS images were collected to see the distribution feature of suface Chl a in the Taiwan Straits in winter, 1998. As preliminary effort of validation, SeaWiFS Chl a data along the ship track on March 27 are compared with sea-truth data collected during the period from Februry 20 to March 7. They are found well correlated with each other (r2 = 0.81, n = 7 ). This hints that the standard Chl a products of SeaWiFS could be usable in this coastal region. SeaWiFS Cul aappears lower in the eastern part of the Straits than in the western area, which is likely to be resulted from the strong intrusion of Kuroshio water into the eastern Straits. That Kuroshio water of very low Chl a contents flows northward along the Penghu Channel is clearly shown on the image, of March 27. For the eastern Straits, Chl a is relatively higher generally in the area north of Penghu Island. It is suggested that the main reason for to this feature is the contribution of nutrients to this area from Min-Zhe Coastal Water extending southward.
出处
《海洋通报》
CAS
CSCD
北大核心
2001年第2期25-29,共5页
Marine Science Bulletin
基金
国家自然科学基金重点资助项目!(49636220)
福建省科委资助项目!(98-Z-179)
