Published papers

The purpose of this research is to analyze the land use change around the coastal zone at Fongafale island in Tuvalu by using map information, aerial photograph and satellite image. Now, it was reported that the Global warming is advanced by heat-trapping gas. And, it has misgivings about coastal erosion along with the sea-level rise. Then, to make the prior information used to settle on the adjustment plan, it advanced the analysis of the geographic information in this research.According to the examination, it has understood that the vegetation area on the Fongafale island decreases for the long term. And, it has understood that the vegetation of the lagoon coastal zone decreases by development in recent years.

Cities are the space where various individuals come across. What the people share, in spite of all the possible differences, is the place where they live, act or visit. If the people have frequent opportunities for dialogues with those who share the place, they will come to be interested in the 'personal histories' of others. The 'Open Museum' is a scheme of community development to generate dialogues, lacking in modern cities, by inventing a shared or 'public history' of its place through the entanglement of their personal histories. In order to encourage various inhabitants and visitors to be interested in specific places, the 'Open Museum' organizes heuristic tours through which the participants can discover and rediscover the past engraved on the spots. First, those tours should embody interesting themes built on specific topics and materials collected by fieldworks. The northwestern part of Ichikawa City, Chiba Prefecture of Japan, is presented here as a sample area, and we would like to provide a theme on its cultural landscape, which in itself is a historical product of the entanglements of activities, the human and natural. Secondly, in order to offer the proper information at the right spots to the participants in the tour, we would like to propose the usage of cellular phones accessible to the Internet and the recent-explored 'QR Code' as a device for receiving the prepared data associated with each spot - e.g. pictures taken there in the past.

八重山諸島の先史時代は、下田原期と無土器期に大別される。サンゴ礁資源は両先史文化期を通じて積極的に利用されてきたと想定されているが、サンゴ礁の形成史は一つの島嶼でさえ地域差がある。本稿では、現生サンゴ礁のバリエーションを形成史の代替指標と評価し、礁嶺等の形成年代を加味することによって、文化期ごとのサンゴ礁発達の地域差を推定した。その結果、サンゴ礁地形の発達が遺跡立地の前提条件ではかならずしもないことを確認できた。

Late Holocene relative sea level fall should be considered in the context of eustatic change, local isostatic adjustment and local tectonic movement. We present a case study of shoreline retreat and lowland formation for the Nagura region of Ishigaki Island in the southern RYukyus.

現在や近過去を扱う文化人類学ばかりでなく、長期的な時間軸を設定する考古学においてさえ、社会や文化の可変性は認識しつつも、地形や動植物相からなる物理環境と生物環境をあたかも「舞台の背景幕」のように変化しないものと想定しがちである。しかし、島嶼景観では、自然の営力や人間の営為による変化がドラスティックに生じる。本稿では、今みる景観が生み出されてきたプロセスを通史的に解明する枠組みとして「景観史」を提起したい。その発想は幅広い領域に認めることができる。そこで、オセアニア考古学にとどまらず、環境史、ジオアーケオロジー、歴史生態学、歴史人類学、景観プランニングの諸学を渉猟し、景観史の理論的枠組みを素描する。