Groundwater temperature as a tracer to estimate anthropogenic impacts

Past, present and future

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

We evaluated the potential variations of aquifer temperature attributed to anthropogenic effects in the past, present, and future in the Sendai Plain, Japan. To simulate the heat transport in the subsurface layers, the USGS numerical code (VS2DH) was used. For the climate predictions, HADCM3, MIROC and ECHAM5 models under the A2, A1B and Bl scenarios were used. The overall results from nine scenarios estimate 0.7-2.1°C subsurface temperature change in 2100 at 12 m depth which is notably higher than the past urbanization effect seen in Sendai. Moreover, groundwater temperature was considered as a proxy to develop a relationship between urbanization level and ground-surface temperature change. Results suggest that approximately 0.6°C ground surface temperature reduction can be achieved in the long-term by reducing the urban ratio by 10% in highly urbanized areas. These results imply the necessity of considering aquifer temperature variations attributed to climate change in habitat restoration programmes.

Original languageEnglish
Title of host publicationIAHS-AISH Publication
Pages10-16
Number of pages7
Volume345
Publication statusPublished - 2011
EventSymposium H01 on Conceptual and Modelling Studies of Integrated Groundwater, Surface Water, and Ecological Systems, Held During the 25th General Assembly of the International Union of Geodesy and Geophysics, IUGG 2011 - Melbourne, VIC, Australia
Duration: Jun 28 2011Jul 7 2011

Other

OtherSymposium H01 on Conceptual and Modelling Studies of Integrated Groundwater, Surface Water, and Ecological Systems, Held During the 25th General Assembly of the International Union of Geodesy and Geophysics, IUGG 2011
CountryAustralia
CityMelbourne, VIC
Period6/28/117/7/11

Fingerprint

tracer
groundwater
urbanization
surface temperature
temperature
aquifer
habitat restoration
climate prediction
anthropogenic effect
climate change

Keywords

  • Climate change
  • Groundwater temperature
  • Sendai Plain Japan
  • Urbanization
  • VS2DH

ASJC Scopus subject areas

  • Earth and Planetary Sciences(all)

Cite this

Groundwater temperature as a tracer to estimate anthropogenic impacts : Past, present and future. / Gunawardhana, Luminda; Kazama, So.

IAHS-AISH Publication. Vol. 345 2011. p. 10-16.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Gunawardhana, L & Kazama, S 2011, Groundwater temperature as a tracer to estimate anthropogenic impacts: Past, present and future. in IAHS-AISH Publication. vol. 345, pp. 10-16, Symposium H01 on Conceptual and Modelling Studies of Integrated Groundwater, Surface Water, and Ecological Systems, Held During the 25th General Assembly of the International Union of Geodesy and Geophysics, IUGG 2011, Melbourne, VIC, Australia, 6/28/11.
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