Oxygen and hydrogen isotope studies of surface water and groundwaters in the Tatun Volcano Group

• Main Authors: Tsai, Cheng-Han, 蔡政翰
• Other Authors: Kuo, Ching-Huei
• Format: Others
• Language: zh-TW
• Published: 2013
• Online Access: http://ndltd.ncl.edu.tw/handle/91664218050177709376

碩士 === 中國文化大學 === 地學研究所地質組 === 102 === Over 200 water samples including rain water, surface water and groundwater from August 2012 to June 2013 in the Tatun volcano group were collected and analyzed. The groundwater levels and temperature were integrated with oxygen and hydrogen isotope data to construct the local groundwater flow path and to delineate groundwater watersheds of the region. Two distinct groundwater watersheds were classified, the Northern and Southern Sulfur creek, accordingly. The results show that the isotope composition of surface water are enriched in winter and depleted in summer, indicating that the source of water vapor in summer and winter are different. The seasonal variations of hydrogen and oxygen isotope composition of groundwaters are significant different from surface water. This indicates that it takes much longer to have the rain water become groundwater. The main recharge season of groundwater in northern Sulfur creek watershed is winter while summer is the main recharge season of groundwater in the southern Sulfur creek watershed. Therefore the isotope composition of groundwater in northern Sulfur creek watershed are generally enriched than in southern Sulfur creek watershed.