Japan Geoscience Union Meeting 2018

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[EE] Poster

A (Atmospheric and Hydrospheric Sciences) » A-HW Hydrology & Water Environment

[A-HW22] Hydrological Cycle and Water Environment

Thu. May 24, 2018 1:45 PM - 3:15 PM Poster Hall (International Exhibition Hall7, Makuhari Messe)

convener:Seiya Nagao(Institute of Nature and Environmental Technology, Kanazawa University), Isao Machida(Geological Survey of Japan), Shin'ichi Iida(国立研究開発法人森林研究・整備機構森林総合研究所森林研究部門森林防災研究領域水保全研究室, 共同), Takeshi Hayashi(Faculty of Education and Human Studies, Akita University)

[AHW22-P01] Radiocarbon ages of the hot springs, the source of Inubohsaki Onsen

*Satoko Tezuka1, Yuji Yamashita1, Tetsuji Hirao1 (1.Chiba Institute of science)

Keywords: Radiocarbon age, Hot spring

In this study, tritium (3H) and radiocarbon (14C) ages were carried out for sources of three hot springs, Inubohsaki Hotel "Kuroshio-no-yu", Inubohsaki Kanko Hotel "Shio-no-yu", and Taiyo-no-sato "Byobugaura Onsen", in order to elucidate their groundwater ages. From the 3H concentration, three sources of Inubohsaki Onsen were old groundwater with a residence time of over 60 years. Furthermore, the 14C concentration measurement indicated that the net 14C ages were from 10,000 to 22,000 yrs BP.