Grasping and Analyzing Mongolian-Expedition-Related Archaeological Sites and Remains on the Seabed of Takashima

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We practiced physical sonic prospecting toward the whole region of the seabed in Imari Bay and drew the detailed map of submarine topography and the geography. In doing so, we typed reactants into 9 types that were detected from surface of the seabed and its accumulation layer ; each of the typed-reactant was identified by the method of under-water archaeology. As a result, parts of the hull of Mongolian sunken ship and a lot of tiles were detected from one of the typed-reactants.From this research, we confirm that the method combining physical sonic prospecting and under-water archaeology is effective to grasp on and elucidate Mongolian-expedition?related archaeological sites and remains ; therefore, we verified this combined-method as a new effective method for investigating underwater ruins.