Analysis of Hydrothermal Systems Beneath Tayukeng through Long-Term Geochemical Signals of Hydrothermal Fluids in Tatun Volcano Group, Taiwan

Hsin-Fu Yeh and Hung-Hsiang Hsu
Additional contact information
Hsin-Fu Yeh: Department of Resources Engineering, National Cheng Kung University, Tainan 701, Taiwan
Hung-Hsiang Hsu: Department of Resources Engineering, National Cheng Kung University, Tainan 701, Taiwan

IJERPH, 2021, vol. 18, issue 14, 1-12

Abstract: The Tatun Volcano Group (TVG) is located in northern Taiwan and consists of many springs and fumaroles. The Tayukeng (TYK) area is the most active fumarole site in the TVG. In this study, we analyzed the long-term geochemical variations of hydrothermal fluids and proposed a mechanism responsible for the variation in TYK. There are two different aquifers beneath the TYK area: a shallow SO 4 2 ? -rich aquifer and a deeper aquifer rich in Cl ? . TYK thermal water was mainly supplied by the shallow SO 4 2? -rich aquifer; therefore, the thermal water showed high SO 4 2 ? concentrations. After 2015, the inflow of deep thermal water increased, causing the Cl ? concentrations of the TYK to increase. Notably, the inferred reservoir temperatures based on quartz geothermometry increased; however, the surface temperature of the spring decreased. We inferred that the enthalpy was lost during transportation to the surface. Therefore, the surface temperature of the spring does not increase with an increased inflow of deep hydrothermal fluid. The results can serve as a reference for understanding the complex evolution of the magma-hydrothermal system in the TVG.

Keywords: thermal water; hydrochemistry; Tayukeng; Tatun volcano group (search for similar items in EconPapers)
JEL-codes: I I1 I3 Q Q5 (search for similar items in EconPapers)
Date: 2021
References: View complete reference list from CitEc
Citations:

Downloads: (external link)
https://www.mdpi.com/1660-4601/18/14/7411/pdf (application/pdf)
https://www.mdpi.com/1660-4601/18/14/7411/ (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:gam:jijerp:v:18:y:2021:i:14:p:7411-:d:592338

Access Statistics for this article

IJERPH is currently edited by Ms. Jenna Liu

More articles in IJERPH from MDPI
Bibliographic data for series maintained by MDPI Indexing Manager ().