[A-HW29] Water Environment and Geology in Urban Areas

[AHW29-04] Subsurface warming detected from long-term subsurface temperature observations at groundwater observation wells in the Tokyo Metropolitan Area: regional variability and controlling factors of increasing temperature trends

*Akinobu Miyakoshi¹, Takeshi Hayashi², Hideki Hamamoto³, Shoichi Hachinohe³, Kuniki Kokubun⁴ (1. Geological Survey of Japan, AIST, 2. Faculty of Education and Human Studies, Akita University, 3. Center for Environmental Science in Saitama, 4. Bureau of Construction, TMG)

Keywords:subsurface temperature, groundwater flow, subsurface warming, urbanization, underground infrastructure, Tokyo metropolitan area