碩士 / 嘉南藥理科技大學 / 溫泉產業研究所 / 100 / Located at Northeastern Taiwan, the Jiaosi Hot Spring is one of the
most favorite recreational destinations in Taiwan. Although the water
chemistry of the Jiaosi hot spring had been determined as early in 1975,
there are only few researches on its distribution and origins. The typical
composition for the Jiaosi hot spring water is mainly by sodium
bicarbonate with 50-60 °C of temperature and 900-1200 μS/cm for
electric conductivity (EC). I suggest that there are five types of waters
representing four end members of origins--rainwater, stream water, cold
groundwater, deep hot water and one type of mixing water of those end
members. In a total of 20 investigated wells, 5 wells are classified as deep
hot water, 2 wells are cold groundwater and 13 wells for mixing water.
Because hot spring water had been over-withdrawing in recent years,
the water table is continuously declining. The declining water table
caused the unsaturated zone expanding and be filled with more
infiltrating rainwater that mixing and decreasing the EC values of hot
spring waters. A construction site pumped groundwater water for 4
months from July to October 2010 that significantly declined water table
to about 2 m lower than the same months of last year. In the period of the
pumping, we detected a lower EC values for the hot spring waters.
I suggest that is important for the sustainable use to set a total yield
limit of thermal water in the Jiaosi Hot Spring. More researches should be
conducted to study the permeability of soil and streambed on top of the
unconfined aquifer.
| Identifer | oai:union.ndltd.org:TW/100CNUP5517010 |
| Date | January 2012 |
| Creators | Tian-Hua Lian, 連天華 |
| Contributors | Wen-Fu Chen, 陳文福 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 123 |
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