2003 年 68 巻 2-3 号 p. 149-155
A share of natural gas in the primary energy supply in Japan is about 13% in FY 2000. The figure is lower than the average of OECD by 10 points. The stable supply of gas and expansion of gas uses are essential to Japan. The government issued methane hydrate exploration program in July 2001 as one of measures to secure domestic gas resources. The brief outlines of the program are presented with previous efforts on methane hydrate study in Japan.