南海トラフ
Research within the Nankai Trough is expected to give helpful insights into the formation and occurrence of natural gas hydrates off the Japanese coast, for although the Nankai Trough exploration wells revealed the existence of pore-filling gas hydrates in turbiditic sand units, it is still unclear how much hydrate potential the area has to offer with respect to exact volumes and economic viability of the occurrences and their relationship to BSR distribution.