Effects of Groundwater Flow and Surface Temperature Warming on Subsurface Temperature Field in the Nobi Plain, Central Japan. 

作成者 Uchida, Youhei, Sakura, Yasuo
日本十進分類法 (NDC) 452.95
内容 研究概要:In the Nobi Plain, temperature profiles were measured in 41 observation wells in 1993 and 1994. There are many temperature inversions in the vertical temperature profiles of recharge area. In the Nobi Plain, annual mean surface temperature increases about 2℃ during last 100 years, and it is assumed that this surface warming causes subsurface temperature inversions. A three-dimensional numerical model of heat transfer in the Nobi Plain is used to investigate the influence of surface temperature warming outside the discharge area, where inversions are evident in the measured temperature profiles. Simulated results show that subsurface temperature inversions are formed in recharge area at depth between 50m-130m below sea level, because subsurface temperature has been cooled with the advective heat transfer by the downward groundwater flow from the surface. On the other hand, shallow subsurface temperatures in the center part of the plain have been heated more by upward regional groundwater flow than by the effect of surface warming, so that temperature inversions are not observed.
コンテンツの種類 研究報告書 Research Paper
DCMI資源タイプ text
掲載誌情報 Proceedings of the international symposium on hydro-environment in Asia page.201-206 (1997)
言語 英語

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