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Oxygen and hydrogen isotope analysis of summer and autumn precipitation, Bucheon, Korea

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Title
Oxygen and hydrogen isotope analysis of summer and autumn precipitation, Bucheon, Korea
Authors
Moon, Jangil
Han, Yeongcheol
Lee, Khanghyun
Hong, Sungmin
Hur, Soon Do
Issue Date
2015
Citation
Moon, Jang il., et al. 2015. Oxygen and hydrogen isotope analysis of summer and autumn precipitation, Bucheon, Korea. The Korean Society for Environmental Analysis, Spring meeting 2015. JeJu Convention Center, 2015.06.17.-18.
Abstract
Water stable isotope composition of precipitation has been used to understand the global and regional water cycles. To investgate the regional water cycle, previous studies have relied mostly on changes in daily- to monthly-averaged isotope composition of precipitation. Figure 1 displays an isotopic scheme during evaporation and precipitation. In the figure, however, the exact numbers can vary depending on meteorological factors such as temperature and precipitation rate, even within a single rainfall event. In this study, we monitored the changes in water isotope composition over the course of rainfall events. The results showed that the δD and δ18O values varied widely from -11.94‰ to -2.18?‰ and from -91.44‰ to -14.40?‰, respectively. The δD-δ18O slope for entire samples was 8.18, but those for single events were 6.51, 7.43 and 9.93. Our study stresses the need for high-resolution sampling of precipitation to better understand the regional water cycle.
Conference Name
The Korean Society for Environmental Analysis Spring meeting 2015
Conference Place
JeJu Convention Center
Conference Date
2015.06.17.-18.
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