In this paper, numerical analysis method of the three-dimensional flow simulator of Ise Bay newly developed is described. The simulator is based on the finite difference method with general curvilinear coordinate system. The computational grids conform with the shape of water surface as well as landform. The grid system is a quasi-regular type for which three velocity components are defined on a same grid point and water elevation is defined in a cell center point. To avoid the splitting of solution which inevitably occurs on the quasi-regular grid system, the numerical scheme developed for two-dimensional model is utilized again. In numerical flow simulations of ocean, numerical stability related to the phase velocity of gravity wave restricts the length of time interval of discrete time step. To relax this restriction, a new time split method was devised and equipped in the simulator. The test run for 100 tidal peridos were performed and stability and robustness of the model were confirmed. CPU time required for the run was within the practical range. Conservation properties of volume and salinity were fairly well. It is seen that the obtained solution has reproduced features of the flow field in Ise Bay. The detail analysis of Ise Bay is the future problem.

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Velocity vectors estimation of water eddy or ocean stream from sequential remote-sensed data is reported. Thermal images of ADEOS (Advanced Earth Observation Satellite) for two succesive days are adopted for this estimation. Optical flow estimation method based on gradient method is utilized for the estimation. Qaulitative estimation of velocity vectors for water eddy or ocean stream have been extracted.

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Finite spectral method which was drought forward by Wang Jian-ping is a spectral method which has both high precision and agility. In this paper, Finite spectral method with Quick method is used to calculate the incompressible viscous flow past a circle.

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Daphnia schφdleri SARS was found in Lake Biwa in early April, 1999. Daphnia schφdleri SARS is a species belonging to P-Daphnids (Hyalodaphnia SCHOEDLER) which has true combs on its abdominal claws. This species is newly recorded in Japan.

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Daito Islands, locating about 360km east of Okinawa, are raised atoll reefs consisted of marginal hills and central lowland. The islands would be more raised in the last ice-age (Hypsithermal) than at present, and many ponds in the lagoon are considered to be originated from dolines or uvalas formed in that age. A limnological investigation was made in the latter part of February, 1998,on the 11 uvalas ponds and 2 doline ponds. 124 species of Phytoplankton and 51 species of Zooplankton were found. In regard to the feature of plankton faund and flora as well as the water analysis, it may be inferable that Hosaku-ike, Kamo-ike, Tukimi-ike, Mizukumi-ike, Shiomizu-ike, Miharasi-ike, Tansui-ike, Kasumi-ike, Asahi-ike, Hyoutan-ike, Oo-ike, Shinobu-ike, and Obi-ike are Eutrophic lake Type.

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Nature as revealed by microscopic scientific research in this century has forced us to change our reductionistic view of science and technology, developed in one straight line since the seventeenth century. In today's scientific knowledge, the macroscopic and microscopic worlds are deeply premised upon each other. Although our world is constituted by microscopic entitles, we cannot actually observe a microscopic object without the state function Ψ, which reflects our limitation of knowledge in principle.

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Thought is that man think and the others do not. It includes three levels based on an idea. Idea yeilds a system of ideas which ultimately results into philosophy. Thought or idea appears through man's thinking about something. Environmental thought is a philosopy concerning environment and man. Environmental thought first appeared during the former half of the 18th to 19th century in Europe. This is the natural protection idea. Since the 1970's, environmental thought has been studied widely under environmental ethics. This study is chiefly is related to deep ecology and social ecology. The studies of environmental thought in Janpan now consists of environmental ethics and naturalistic thinking.

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The purpose of this study is to find and investigate the urban planning in the past, which led to the formation of Yokkaichi City. I think the following three plans are important. The first is a city-planning map 1941. The second is a master plan of the war rehabilitation land readjustment project. The third is a conception picture of the Yokkaichi general development plan 1960. I investigate into the city-planning map 1941 in this paper. This map was made by Mie Local City Planning Commission. According this plan, the southern part of Yokkaichi central urban district was developed as industrial district, and Yokkaichi station of Kansai Express Railway was transferred to where present Kintetsu Yokkaichi Station is located. This map played an important part to develop Yokkaichi City as an industrial-city, just like a master plan of those days. That was the first time Yokkaichi City had something like a master plan for the development of the city.

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Flow simulation Java component architecture is proposed, which presents rectangular flow domain object, named flow-Component, The flow-Component is not only flow solver but also flow visualization monitor, and grid generator, which can be added dynamically in the container flow-Component object, and application can be built with no program coding.

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