A fundamental study on the change of climatic environment caused by a large-scale human activity

这是对大规模人类活动引起的气候环境变化的基础性研究。本研究同时考虑了方法论和实地研究。这里大规模的人类活动被定义为冬奥会导致的城市化程度。城市化程度考虑了人口、DID人口、天空景观等指标。研究区域为长野县长野盆地，选取长野县为例，因1996年冬季奥运会主办国而受到大规模人类活动的影响。此外，选定的热岛现象特别实地研究的城市是长野，Susaka，中野，Shinonoi，松城，Obuse, Toyono。热岛观测采用HC-40手持计算机移动观测系统。令人惊讶的是，奥布塞小镇的热岛强度达到了4.2摄氏度，几乎与欧洲和北美城市的观测值相似。此外，在中野的一个小城市，观测到的热岛强度与城市规模相当大。这可以用土地覆盖材料的变化和高层建筑的增加来解释。在该地区最大的城市长野，与位于长野盆地外山区的新树-新田和杉田进行比较，得到了热岛强度的频率分布。Landsat数据也被证明是有效的。

This is a fundamental study on the cange of climatic environment a largescale human activity. In this study both the methodology and the field study are considered. Here a large-scale human activity is defined the degree of urbanization caused due to the Winter Olimpic Game. The indices such as population, DID population, sky view and so on is taken up into consideration as the degree of urbanization. The study area is the Nagano basin, Nagano Prefecture which is chosen as a example which has been effected by a large scale human activity due to a host country for the 1996 Winter Olimpic Game. Also the cities selected for the special field study of heat island phenomena are Nagano, Susaka, Nakano, Shinonoi, Matsushiro, Obuse, Toyono. heat island is observed by the moving observation system using the HC-40 handheld computer. Surprisingly heat island intensity in the small town of Obuse amounted to 4.2 C which was almost similar to the value observed in European and North American cities. Also in a small city of Nakano considerably large heat island intensity was observed for city size. This is explained with the change of land cover materials and increasing high buildings. In the largest city of Nagano in this area frequency distribution of heat island intensity is also obtained compared with Shinshu-shinmati and Sugadaira which are located in the mountainous area outside the Nagano basin. Landsat data is also proved to be effective for this study.