TY - GEN
T1 - Groundwater temperature as a tracer to estimate anthropogenic impacts
T2 - 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
AU - Gunawardhana, Luminda
AU - Kazama, So
PY - 2011
Y1 - 2011
N2 - 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.
AB - 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.
KW - Climate change
KW - Groundwater temperature
KW - Sendai Plain Japan
KW - Urbanization
KW - VS2DH
UR - http://www.scopus.com/inward/record.url?scp=84860573825&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84860573825&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:84860573825
SN - 9781907161209
T3 - IAHS-AISH Publication
SP - 10
EP - 16
BT - Conceptual and Modelling Studies of Integrated Groundwater, Surface Water, and Ecological Systems
Y2 - 28 June 2011 through 7 July 2011
ER -
