An comparative coastal oceanography on the processes of material transportation through surface layr from Tokyo, Ise, and Osaka Bays to Pacific Ocean

在这项研究中，我们重点研究了物质通过表层从沿海地区向近海地区输送的过程。我们选择东京、伊势湾和大阪湾作为典型的沿海地区，这些地区与黑潮水域相连，同时也面临着工业区和人口密度高的地区，被认为是最富营养化的海岸带。物质从这些海湾通过表层运移到近岸可能是对黑潮主要路径的变化的响应，即海洋强迫从近岸到海岸。这项研究的目的是阐明物资运输的机制，并定量估计物资运输量。我们尝试了结合卫星遥感、数值模拟和现场天气观测的跨学科方法。这种将三个海湾进行比较的方法应被定义为比较沿海海洋学。主要研究结果如下：(1)伊势湾与其他海湾冬季悬浮物的外流过程不同。(2)利用高分辨率卫星遥感技术，确定了东京湾悬浮物外流的两种类型。(3)研究了悬浮物从表层和底层流出的比例。(4)建立了各海湾的海岸诊断数值模式。(5)利用1995-1994年日本沿岸黑潮主要路径的观测距离，研究了日本南部黑潮路径的变化特征。(6)对东京湾、伊势湾、大阪湾的淡水、盐分、DIP和DIN的收支进行了研究，了解了各海湾的物质循环特征。

In this sutdy, we focused on the processes of material transportation from coastal region to offshore region through surface layr. We selected Tokyo, Ise, and Osaka Bays as typical coastal regions which are connected to the Kuroshio water and are also facing to industrial area and high density of population region considered as most eutrophicated coastal zone. Material transportation from these bays to offshore through surface layr might be responded to variation of main Kuroshio Path as oceanic forcing from offshore to coast. The objective of this study is to clarify an mechanisms on material transportation and to estimate quantitatively the volume of material transportation. We attempted interdisciplinary approach using combination satellite remote sensing, numerical modeling, and in-situ synoptic observation. This approach with comparison of three bays should be defined as an comparative coastal oceanography. Summary of our results is as follows : (1) There is a difference outflow process of suspended matter between Ise Bay and other Bays in winter. (2) Outflow patterns of suspended matter from Tokyo Bay is defined two patterns by using high resolution satellite remote sensing. (3) We examined a ratio of outflow of suspended matter from surface layr and bottom layr. (4) We developed coastal diagnostic numerical model for each bays. (5) The characteristics of the variation in the Kuroshio path south of Japan is studied by use of the observational distance of the main Kuroshio path from Japanese Coast over period of 1995-1994. (6) Budgets of fresh water, salt, DIP and DIN in Tokyo, Ise, Osaka Bays are studied and we understand the characteristics of material cycling of each bay.