琵琶湖の水環境の時間に基づく情報解析 : 時間解析ツールHuTime の有効性の検証

Abstract

Like analysis using GIS, information analysis based on temporal data has the potential to analyze relationships between various types of data. HuTime has been developed to realize such information analysis based on temporal data and has a function to display various types of information (text and numeric data) along the same temporal axis. In the present study, an experimental analysis was conducted on a sample issue to examine the usefulness of information analysis based on temporal data using HuTime. The sample issue examined was an environmental problem in Lake Biwa, Japan, which has lately experienced a problem with waterlevel fluctuation, especially extreme declines in water level. An environmental problem usually has many related aspects and is therefore a good case for information analysis using various types of data. In this experimental analysis, meteorological and hydrological data, local government documents related to water level control and water quality data related to the problem were used.The results suggest that information analysis based on temporal data was useful for studies that utilize various types of data, such as environmental science and area studies.