| Title | Statistic analysis of non-volcanic geothermal resources of northeast Japan - based on geothermal resources maps |
|---|---|
| Authors | K. Sakaguchi and S. Tamanyu |
| Year | 2003 |
| Conference | European Geothermal Conference |
| Keywords | non-volcanic geothermal resource, deep-seated hot water resource, hot spring, statistics, northern Japan |
| Abstract | A series of geothermal resources maps were compiled at a 1:500,000 scale in northeast Japan to allow better understanding of characteristics of the geothermal resources and geologic control factors. Geothermal resources are classified into following three types: geothermal resources closely related to young volcanism, deep-seated hot water resources in sedimentary basins, and other resources. Hot springs that belong to the latter two resource types were statistically analyzed based on various parameters. The hot springs with the largest production rate or the highest temperature are selected from each geothermal area as the representative hot springs, and compared each other in terms of chemical characteristics, temperatures, dissolved chemical concentrations and production rates of hot springs. Most hot springs are classified into three types: diluted hot springs, chemically mixed hot springs, and chloride-rich concentrated hot springs. Amount of total dissolved matters increases from diluted hot springs to concentrated hot springs, but temperature and production rate do not show clear correlation with the hot spring types. |