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The 6th Talk of GeoForum: Using Isotopes to Study Characteristics of Water Cycles

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Time: 19:30-21:00, 29th April 2014

Lecture Venue: Lecture Theatre D128 in the Geography and Environment Building

Speaker: Prof. Tang Changyuan

Successful holding of the Sixth Lecture of Geography and Earth Science Forum for Young Scholars


    On April 29, 2014, the sixth lecture of Geography and Earth Science Forum for Young Scholars-- “Using Isotopes to Study Characteristics of Water Cycles” delivered by Prof. Tang Changyuan, expert recruited through “One Thousand Talents Program”, was successfully held. About 30 people attended the lecture, with over 10 from the faculty. At present, the development of academic subjects demands inter-disciplinary knowledge and results and Prof. Tang possesses profound knowledge not only of physical geography but also of hydrology, geochemistry, ecology, and soil microbiology, which endows him the ability to conduct integrated research, allows him to constantly enrich his knowledge and keeps his work at the frontier of the discipline. During the lecture, Prof. Tang began by introducing the fundamentals of isotope detecting, the mechanism of the fractionation of hydrogen and oxygen isotopes and its characteristics in river basin water circulation. Moving on, he elaborated on three cases to apply the mechanism of the fractionation of hydrogen and oxygen isotopes in river basin water circulation: how to determine the supplementation effect of rainfall in Taihang Mountain for groundwater of the North China Plain, including its source, process, and the depth of soil water evaporation, how to determine the forming time of north China groundwater and its recharge process, and how to determine the age and replenishment mechanism of the deep groundwater hot spring in Okayama, Japan, all through analyzing the ratio variation of hydrogen and oxygen isotopes. In the end, Prof. Tang summarized the potential applications of the fractionation of hydrogen and oxygen isotopes in the field of river basin water cycle characteristics and mechanism study. After the lecture, faculty members Dong Yuxiang, Chen Jianyao, Ding Jian, and students including Huang Kangning discussed various applications of the fractionation of hydrogen and oxygen isotopes in the field of river basin water cycle studies with Prof. Tang.