Formation process and prediction of urban subsurface warming beneath the Tokyo metropolitan area

• Project/Area Number: 25871190
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Design and evaluation of sustainable and environmental conscious system; Environmental impact assessment
• Research Institution: National Institute of Advanced Industrial Science and Technology
• Principal Investigator: Miyakoshi Akinobu 国立研究開発法人産業技術総合研究所, 活断層・火山研究部門, 主任研究員 (30392666)
• Project Period (FY): 2013-04-01 – 2016-03-31
• Project Status: Completed (Fiscal Year 2015)
• Budget Amount: ¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000); Fiscal Year 2015: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000); Fiscal Year 2014: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000); Fiscal Year 2013: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
• Keywords: 都市地下熱環境 / 地下温暖化 / 都市排熱 / 地下開発 / 地下水流動 / 人間活動 / 都市化 / 東京首都圏 / 地下温度 / 首都圏 / 排熱 / 地下構造物 / 地下環境

Outline of Final Research Achievements

Subsurface temperature monitoring was conducted by use of high-precision thermometers to evaluate the formation process of urban subsurface warming in the Tokyo metropolitan area. Continuous subsurface warming was observed, and it was made clear that subsurface warming become advanced. The warming ratios of subsurface temperature in the city center were higher than the warming ratios in the rural area. The formation of subsurface warming was considered to be affected by not only the surface warming but also waste heat from subsurface structures and groundwater flow changes.

Research Products

• [Presentation] 宮越昭暢，林武司，川合将文，川島眞一，國分邦紀，濱元栄起，八戸昭一 (2016)
  • Author(s): 首都圏における地下温度の経年的な上昇とその要因－地下温度の長期モニタリングによる検証と評価－
  • Organizer: 地球惑星科学連合2016年連合大会
  • Place of Presentation: 幕張メッセ（千葉県）
  • Year and Date: 2016-05-25
• [Presentation] Evaluation of subsurface warming due to urbanization for sustainable management of urban groundwater resource in the Tokyo metropolitan area, Japan (2015)
  • Author(s): Akinobu Miyakoshi, Takeshi Hayashi, Masafumi Kawai, Shinichi Kawashima, Kuniki Kokubun, Hideki Hamamoto, Shoichi Hachinohe
  • Organizer: 42nd International Association of Hydrogeologist Congress
  • Place of Presentation: Sapienza University（イタリア・ローマ）
  • Year and Date: 2015-09-15
• [Presentation] 首都圏における地下温度の経年的な上昇とその要因 (2015)
  • Author(s): 宮越昭暢，林武司，川合将文，川島眞一，國分邦紀，濱元栄起，八戸昭一
  • Organizer: 地球惑星科学連合2015年連合大会
  • Place of Presentation: 幕張メッセ（千葉県）
  • Year and Date: 2015-05-27
• [Presentation] Impacts of Urbanization and Global Warming on Groundwater Flow and Subsurface Temperature in the Tokyo Metropolitan Area, Japan (2014)
  • Author(s): 宮越昭暢，林武司，濱元栄起，川合将文，川島眞一
  • Organizer: International Association of Hydrogeologists 41st International Congress
  • Place of Presentation: Ryad Mogador Congress Palace（マラケシュ，モロッコ）
  • Year and Date: 2014-09-16
• [Presentation] Combined Evaluation of Regional Groundwater Flow and Groundwater Temperature Suggests Subsurface Warming in the Tokyo Metropolitan Area (2014)
  • Author(s): 宮越昭暢，林武司，濱元栄起，川合将文，川島眞一
  • Organizer: Asia Oceania Geosciences Society 11th Annual Meeting
  • Place of Presentation: ロイトン札幌（北海道）
  • Year and Date: 2014-07-29