Estimations of climate and precipitation changes from subsurface environment data

在日本大阪、奈良、Noubi、Ishikari和Nagaoka测量了钻孔温度，并进行了分析，得出了本研究的结论。在许多钻孔中发现了全球变暖和城市化引起的地表变暖的影响。地表变暖的影响在地下水回灌区较深，在地下水排放区较浅。为了准确地估计地表变暖，对钻孔温度进行了重复测量。研究结果分别在2000年5月召开的国际水力学协会特别会议和2000年6月由美国地球物理联合会组织的西太平洋地球物理会议上发表。

Borehole temperatures were measured in Osaka, Nara, Noubi, Ishikari and Nagaoka, Japan, and the analyses have been done to make conclusions of this study. The effects of surface warming due to global warming and urbanization were found in many boreholes. The effects of surface warming reach deeper in the groundwater recharge area and remain in shallow in the groundwater discharge area. Measurements of borehole temperature were repeated in order to obtain the accurate estimations of surface warming. The results were presented in a special session of International Association of Hydraulics, which was held in May, 2000, and Western Pacific Geophysical Meeting organized by American Geophysical Union in June, 2000.