抄録
The authors tried to construct a thermal water flow model of the Futsukaichi Hot Springs area, one of some
non-volcanic and low-enthalpy geothermal systems in Fukuoka Prefecture, Kyushu, Japan, by using numerical simulation to explain the conceptual model of this area, which is based on the previous research results. The conceptual model explains that the origin of Futsukaichi hot spring water is the rain water at the high-elevation areas, and the water permeates and reaches to the depth of about -3 to -4 km asl with heating by the ground, and finally it ascends to the ground surface through the fracture zone of an active fault. And the most suitable numerical model also shows the same water flow. In addition, there is no special water source and no special heat source to create the Futsukaichi hot springs in this numerical model. Namely, this numerical model is a comprehensive explanation of the non-volcanic, low-enthalpy geothermal system in the Futsukaichi Hot Springs area.
