碩士 / 嘉南藥理科技大學 / 溫泉產業研究所 / 98 / The Jiaosi hot spring is one of the most important hot spring destinations in Taiwan. The hot spring water resource meet great challenge for an increasing development of hot spring resorts in decades. Studies showed that hot water had been extracted in excess of its recharge to the aquifer and the overpumping had caused the hot water front retreated and temperature declined. However, there is no long-term monitoring data to prove the time and magnitude of those overpumping events. Therefore, to understand the current situation and the future of sustainable development of Jiaosi hot spring,we need to build long-term of this area database.
For understanding the occurrence and movement of hot spring waters, we compile a hydrogeological conceptual model from driller’s logs and by measuring the temperature profile in wells. We also install probes in four wells to monitor the water levels and temperatures.
The quartzite in the west hillside is the source of hot spring waters which flow upward along fractures and enter the horizontally unconsolidated sedimentary aquifer, then flow mainly to the southeastern. There are three layers in the aquifer, upper and lower gravels layers and middle sand layer. Thickness of the aquifer is about 20-100m in the northwestern upflow area and over 200m in the downflow area. The hot waters distribute over the aquifer with a surface area of about 1.5×1.0 km2.
There is a significant correlation between water levels rise and rainfall intensity. In September of 2008, the water levels in hot spring wells raised for several meters while the rainfalls were over 1000mm. The temperature of the middle layer is higher than the upper and lower layers and indicate the middle layer has been pumped intensely. According to our data, we suggest that there is no hot water front retreated or temperature declined during the monitoring period of two and half year.
| Identifer | oai:union.ndltd.org:TW/098CNUP5517003 |
| Date | January 2010 |
| Creators | Chi-ta Lin, 林琪達 |
| Contributors | none, 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 | 92 |
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