The Fundamental Study on the Methods of investigation, Study, and Conservation of the site at the Mongol Invasion in Takashima Seabed

高岛海底蒙古入侵遗址调查、研究和保护方法的基础研究

• 批准号: 01102041
• 负责人: NISHITANI Tadashi
• 金额: --
• 依托单位: Kyushu University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Co-operative Research (A).
• 财政年份: 1989
• 资助国家: 日本
• 起止时间: 1989 至 1991
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-01102041/
• 关键词: Underwater Archaelogy; Seabed Site; the Mongol Invasion; Ocean Floor Topography; Soner; Stratum Investigation; Desalination Conservation Treatment; 水中孝古学; 蒙古襲来(元冦); サイド・スキャンソナ-

The major work undertaken in this study was the conducting of a field study in the zone along the southern shore of Takashima. In addition to this methods of conservation treatment of recovered artifacts wave examined in a laboratory. For purpose of comparative research a field study of the Shitadaru offshore seabed site of Ishigaki City in Okinawa Prefecture was also carried out, with the ceramic waves recovered being drawn and catalogued.As the ground topography of Takashima and the seabed topography form a consecutive relationship, observations were made from the sea to the land, and recorded visually with a TV camera. This was carried out as part of the field survey. Simultaneously a seabed section, namely, the depth and ground stratum under a fixed measuring line were measured continuously while cruising along that line. Based on the results of surface sonar image photographs taken with a side scan sonar of the seabed topography throughout the whole extent of the well known site, dives were made in those areas in which it was thought highly possible that archaeological features and artifacts could be buried. These areas were examined in detail and recorded visually. Centering around Urashimoura, judged as the most likely area in which artifacts could still remain, the area was surveyed carefully, with additional side scan sonar, sub-bottom profiler, and electromagnetic surveys. Furthermore, boring was carried out at 3 of the points at which positive responses were observed, and samples of seabed sediment stratum taken. Substructure data and dating samples were also taken for sub-bottom profiler data analysis.

这项研究的主要工作是在高岛南岸一带进行实地研究。除此之外，在实验室中对回收的文物进行了保存处理。为了进行比较研究，还对冲绳县石垣市的下田丸近海海床场址进行了实地研究，并对回收的陶瓷波进行了绘制和编目。由于高岛的地面地形与海底地形呈连续关系，因此从海上到陆地进行观测，并通过电视摄像机进行目视记录。这是作为实地调查的一部分进行的。同时，沿着固定测量线连续测量海底剖面，即测量线下的深度和地层。根据用侧面扫描声呐对整个著名地点的海底地形拍摄的表面声呐图像照片的结果，在那些被认为极有可能埋藏考古特征和文物的地区进行了潜水。对这些区域进行了详细检查并进行了视觉记录。以浦村为中心，被认为是最有可能保留人工制品的区域，这一区域被仔细地调查了，使用了额外的侧扫声纳、海底剖面仪和电磁测量。此外，在观测到积极响应的3个点进行了钻孔，并采集了海底沉积物地层样本。下部结构数据和测年样本也用于下部剖面数据分析。