9” of State Oceanic Administration (SOA) in a 200 km long area of Okinawa Trough Miyoko Section recent years, we show the topography and distribution of central graben in great detail for the first time.

Computation of Thickness of Hydrate Stability Zone in Okinawa Trough;

Development and distribution of natural gas hydrate in the Okinawa trough;

The physico-chemical features and their geological implications of magma in the Okinawa Trough;

Magnetic Properties of Sediments from the Okinawa Trough and Their Relationships to Sedimentary Environment;

Estimation of the Provenance and Flux of the Sediments in the Okinawa Trough Using Quantitative Analysis Since Late 40 Ka;

On the Evolutional Model of the Tectonic Geomorphology of the Okinawa Trough;

Study on the Diversity of Denitrifying Bacteria of Changjiang Estuary Sediments and Extracellular Enzyme Producing Bacteria Isolated from Southern Okinawa Trough Deep-sea Sediments;

Physiochemical and phylogenetic analysis of moderately halophilic bacteria halomonadaceae in deep-sea sediments of the Southern Okinawa Trough

Preliminary Study on the Radiolaria from the Surface Sediments in Southern Okinawa Trough;

Benthic foraminiferal distribution in surface sediment along the con- tinental slope of the southern Okinawa Trough : dependance on water masses and food supply;