Reconstruction of iron technology and diffusion in Tohoku and Hokkaido

报告共分五章。各章的内容总结如下。第1章讨论了该项目的目的和开展调查的方式。在东北和北海道进行了包括自然环境研究在内的地区考察。为了调查这两个地区的文化联系，该项目集中使用了铁器技术。寻找需要挖掘的遗址是研究过程中一个困难的过程。萨摩文化中的居住坑群位于北海道的海岸线上。因此，调查的重点是北海道德胜地区沿太平洋一侧的海岸线。经过一些调查，如测量，滨台木2号遗址附近的Horokayanto选择挖掘为本研究。战壕是在一个居住坑挖出来的。在东北地区，位于Tsugaru地区九山湖附近岩崎河口的Karakawajoato遗址的铁生产炉膛已经被挖掘出来。在这个地区，特别是岩城山麓附近，发现了许多铁炉，这表明该地区可能是铁生产的中心。这是研究铁生产技术及其分布的一个重要领域。第二章讨论滨台ki 2遗址的发掘。虽然挖掘工作还没有完全完成，但结果表明，该遗址表明了一些更北的文化接触，比如千岛群岛和东北的文化。它需要进一步调查。第三章讨论了卡拉卡瓦约托遗址的挖掘结果。由于炉膛的结构，这个地方的炉膛可以被解释为精炼炉膛而不是生产炉膛。可以认为，空气脱碳过程发生在炉内。第四章描述了基于考古冶金学分析（对于识别铁技术中使用的过程至关重要）的现场材料分析结果。第五章描述了木炭分析的分析结果。少

The report consists of 5 chapters. The contents of the chapters are summarized below.Chapter 1 discusses the aim of the project and the way in which the investigation carried out. Examination of area, including the research of natural environment took place both Tohoku and Hokkaido. The iron technology has been centralized in the project in order to investigate cultural contact with in both areas. Finding sites, which need to be excavated was difficult process during the research. The group of dwelling pits in Satsumon culture is located along the coastal line of Hokkaido. So investigations focus on the coastline along the Pacific Ocean side of Tokachi district in Hokkaido. After some investigations such as surveying, Hamataiki 2 site near Lake Horokayanto is chosen to excavate for this study. The trenches have been dug at one dwelling pit. In Tohoku district, the hearth of iron production at Karakawajoato site located on the mouth of River Iwaki near Lake Jiusanko in Tsugaru district … More has been excavated. In this area, particularly around the foothills of Mount Iwaki, many iron hearths have been found suggesting that the area can be a center of iron production. It is an important area in order to investigate the iron production technique and its distributions. Chapter 2 discusses the excavation of Hamataiki 2 site. Although the excavation has not completely finished, results show that the site indicates some cultural contact further north such as culture in the Kuril Islands as well as in Tohoku. It need to investigate further more. Chapter 3 discusses the results of excavation at Karakawajoato site. The hearth at this site can be interpreted as refining hearth rather than production hearth due to the structure of the hearth. It is possible to consider that the decarburisation process by air had taken place inside of the hearth. Chapter 4 describes that the analytical results of material from the site, based on archaeometallurgical analyses (essential to the recognition of the process used in iron technology) are discussed. Chapter 5 describes the analytical results of charcoal analysis. Less