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

关于从东京湾、伊势湾和大阪湾到太平洋的物质通过表层输送过程的比较沿海海洋学

基本信息

批准号：
07308040
负责人：
SAITOH Sei-ichi
金额：
$ 5.25万
依托单位：
HOKKAIDO UNIVERSITY
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (A)
财政年份：
1995
资助国家：
日本
起止时间：
1995 至 1996
项目状态：
已结题

项目摘要

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.

本研究主要研究物质通过表层从沿海向近海输送的过程。选择东京湾、伊势湾和大坂湾作为典型的近海区域，它们与黑潮水域相连，同时也面临着工业区和人口密集区，被认为是最富营养化的海岸带。黑潮主要路径的变化可能是由近海向沿岸的海洋强迫作用的结果。本研究的目的是阐明物质运输的机制，并定量地估计物质运输量。我们尝试跨学科的方法，结合卫星遥感，数值模拟，并在现场天气观测。这种比较三个海湾的方法应被定义为比较海岸海洋学。结果表明：（1）伊势湾冬季悬浮物外流过程与其它海湾不同。(2)利用高分辨率卫星遥感资料，将东京湾悬浮物外流模式分为两种模式。(3)我们研究了悬浮物从表层和底层流出的比率。(4)建立了各海湾的海岸诊断数值模式。(5)利用1995 ~ 1994年黑潮主要路径距日本海岸的观测距离，研究了日本以南黑潮路径的变化特征。(6)通过对东京湾、伊势湾和大坂湾的淡水、盐、DIP和DIN收支的研究，了解了各海湾的物质循环特征。