Department of Civil and Environmental Engineering and Geodetic Science The Ohio State University Columbus, Ohio, USA

ma.106@osu.edu

　

Shorelines are recognized as some of the most unique features on earth. They have valuable properties for a diverse user community. At present, photogrammetry is the most popular technique used to capture a shoreline. With the improved resolution and accuracy, commercial high-resolution satellite imagery is demonstrating a great potential in the photogrammetry application domain. One example is the utilization of IKONOS imagery in shoreline extraction. IKONOS panchromatic imagery has a resolution of approximately 1 m as well as the capability of stereo imaging.

　

This paper presents the results of an experiment in which we attempted to improve IKONOS Rational functions (RF) for a better ground accuracy and to apply the improved RF for 3-D shoreline extraction using 4 m multi-spectral and 1 m panchromatic images in a Lake Erie coastal area. Two approaches were investigated. One was to rectify the final images using ground control points (GCPs). The other was to refine the RF coefficients using the GCPs. We compared the results from these two approaches. An assessment of the shoreline extracted from IKONOS images compared with existing shorelines is also conducted to demonstrate the potential of IKONOS imagery for shoreline mapping.

　

　

Graduate School of Science and Technology, Nihon University Chiba, JAPAN

miyamoto@aquarius.ocean.cst.nihon-u.ac.jp

　

The objective of present research is to clarify the water quality condition in blue tide by using marine geographic information system (MGIS) and by noticing that the stratification and the extension, the transfer, the rising of oxygen-depleted water in Tokyo Bay.

　

In the present research, GRASS (Geographic Resources Analysis Support System) has been applied and the interpolation and the viewing transformation of water quality data of Tokyo Bay have been done and its data have been combined with the data of water depth with 50 meter meshes so that the process from the construction of oxygen-depleted water mass to the generation of blue tide have been analyzed qualitatively.

　

The conclusions of present research have been given as follows:

　

¹Systems Engineering Associates, Inc. Tokyo, JAPAN

kfd02033@nify.ne.jp

　

²System Intech Co., Ltd., Tokyo, JAPAN

³Japan Ocean Industries Association, Tokyo, JAPAN

⁴Nihon University, Tokyo, JAPAN

　

This paper summarizes the present state of marine data accumulation in Japan and presents a proposal for new methods of marine data collection and processing for the purpose of forming the foundation of a marine information technology industry.

　

The importance of ocean-related information has become increasing apparent during this last decade for both human-scale economic activities and global environmental problems as well. Oceanic geophysical information, such as water temperature changes and distribution, currents and tide level changes as well as other factors such as geographical features of ocean floors, is indispensable not only for the marine products industry but also for marine resource development and ship navigation. Because the primary purpose of present-day marine data collection is scientific research and geophysical analyses, coupled with the difficulties of oceanic data processing and interpretation, the result is marine data being unavailable for commercialization through practical applications in economic activities.

　

The authors have been studying the present state of marine data accumulation in Japan and, in conjunction, developing a proposal for the commercialization of marine information technology (MIT). In order to promote a marine information technology industry, data now stored in several institutions should be unified and made more easily accessible at modest cost. Accessibility not only involves the actual dispensing of the data but also its display in an easily understood format. The availability of processed marine data to commercial markets such as the marine products, transportation and leisure industries in conjunction with related aspects of the tourist industry would form the foundation of a marine information technology industry.

　

　

Department of Oceanic Architecture and Engineering, Nihon University Funabashi, Chiba, JAPAN

okamoto@ocean.cst.nihon-u.ac.jp

　

Recently, when a big structure will be built in a bay, it is needed that environmental prediction must be carried out. In the prediction of a water quality or an ecosystem for the purpose in environmental assessment, simulation models must be built. At first, tidal currents simulation is taking sufficient part in these simulation models for prediction. Next, the water-qualify simulation, treated such as unified currents and substance circulation is needed.

　

On the other hand, Geographic Information System (GIS) has been applied by understanding the convenience for use. So, we had already presented the tidal current simulation system applied GIS.

　

Here, currents on calculation of the substance circulation in a bay must be considered the components of density currents, wind driven currents etc. To treat such currents requires the numerical data, which are geographical features of the target area and time-series of water-temperature and salinity. It is so enormous that we have to take a lot of time.

　

In this paper, our object is to develop new simulation system which is applied GIS to a simulation program of substance circulation. Our major points of this developed system are to be able to execute a substance circulation simulation extremely simply and efficiency.