Zobrazeno 1 - 10 of 285 pro vyhledávání: '"Seong Taek Yun"'
1
Akademický článek
Using isometric log-ratio in compositional data analysis for developing a groundwater pollution index
Autor: Junseop Oh, Kyoung-Ho Kim, Ho-Rim Kim, Sunhwa Park, Seong-Taek Yun
Publikováno v: Scientific Reports, Vol 14, Iss 1, Pp 1-13 (2024)
Abstract This study introduces a novel groundwater pollution index (GPI) formulated through compositional data analysis (CoDa) and robust principal component analysis (RPCA) to enhance groundwater quality assessment. Using groundwater quality monitor
Externí odkaz: https://doaj.org/article/8f480c858ca84f589829a6598ae20553
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2
Akademický článek
Development of an integrated hydrochemical index for delineating livestock manure-derived groundwater plumes in agro-livestock farming areas
Autor: Jeong-Ho Lee, Seong-Taek Yun, Soonyoung Yu, Chang-Hoon Yoo, Yong-Seok Jeong, Kyoung-Ho Kim, Ho-Rim Kim, Hyunkoo Kim
Publikováno v: Ecological Indicators, Vol 138, Iss , Pp 108838- (2022)
To delineate a livestock manure-derived groundwater plume (LDGP) in agro-livestock farming areas with the extensive use of chemical fertilizers, multilevel monitoring wells (MLWs) were installed for depth-specific sampling of groundwater, and then hy
Externí odkaz: https://doaj.org/article/e48a5a9eb34c4d0888e3c812b6201528
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3
Akademický článek
Hydrochemical and Isotopic Difference of Spring Water Depending on Flow Type in a Stratigraphically Complex Karst Area of South Korea
Autor: Soonyoung Yu, Gitak Chae, Junseop Oh, Se-Hoon Kim, Dong-Il Kim, Seong-Taek Yun
Publikováno v: Frontiers in Earth Science, Vol 9 (2021)
Characterizing the subsurface flow in karstic areas is challenging due to distinct flow paths coexisting, and lithologic heterogeneity makes it more difficult. A combined use of hydrochemical, environmental isotopic, and hydrograph separation study w
Externí odkaz: https://doaj.org/article/1ac10bb5960c40159c0770ce54a971ce
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4
Akademický článek
Short-Term Monitoring of Geogenic Soil CO2 Flux in a Non-Volcanic and Seismically Inactive Emission Site, South Korea
Autor: Chan Yeong Kim, Soonyoung Yu, Yun-Yeong Oh, Gitak Chae, Seong-Taek Yun, Young Jae Shinn
Publikováno v: Frontiers in Earth Science, Vol 8 (2021)
Temporal changes of soil CO2 flux (FCO2) and soil CO2 concentration ([CO2]v) were surveyed in a natural CO2 emission site to characterize the factors controlling the short-term temporal variation of geogenic FCO2 in a non-volcanic and seismically ina
Externí odkaz: https://doaj.org/article/229a66b07ac44a53bb1ed66d20a07665
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5
Akademický článek
Hydrogeochemical Characteristics of Bottled Waters Sourced from Bedrock Aquifers in South Korea: Evaluation of Water Type and Natural Background Levels
Autor: Kyung-Jin Lee, Soonyoung Yu, Kyoung-Ho Kim, Kyoung-Gu Kang, Su-Hyung Moon, Moon-Su Kim, Seong-Taek Yun
Publikováno v: Water, Vol 14, Iss 9, p 1457 (2022)
The hydrogeochemical properties of bottled waters (n = 37) were examined to evaluate the factors governing their quality and to suggest the natural background levels (NBLs) of groundwater. The bottled waters were sourced from bedrock aquifers of vari
Externí odkaz: https://doaj.org/article/2cf772b5804948dc911dcf409b178eea
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7
Akademický článek
Real‐time monitoring of carbon dioxide emissions from a shallow carbon dioxide release experiment
Autor: Hyun‐Jun Kim, Seung Hyun Han, Seongjun Kim, Daegeun Ko, Seong‐Taek Yun, Yowhan Son
Publikováno v: Vadose Zone Journal, Vol 19, Iss 1, Pp n/a-n/a (2020)
Abstract This study was conducted to analyze CO2 migration from a shallow CO2 release experiment using a continuous soil CO2 flux measurement system. Approximately 1.8 t CO2 was injected from 1 to 30 June 2016 through the point sources with perforate
Externí odkaz: https://doaj.org/article/85405b0920e24cc2a59eb5036fa08cfe
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9
A combined analysis of hydrochemical, isotopic, microbiological and geophysical characteristics for assessment of nitrogen loading to a deep crystalline bedrock aquifer
Autor: Soonyoung Yu, Han-Suk Kim, Jehyun Shin, Seong-Taek Yun
A combined analysis was conducted to understand nitrogen loading to a deep (~ 80 m below ground level (bgl)) bedrock aquifer, including hydrochemical, isotopic, microbiological, hydrogeological, and geophysical investigation. The studied site, locate
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::8f709bf8d989dc7bd2982d41136f7fb5
https://doi.org/10.5194/egusphere-egu23-17347
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10
Akademický článek
Assessment of Soil Contamination by Gas Cloud Generated from Chemical Fire Using Metabolic Profiling and Associated Bacterial Communities
Autor: Jungman Jo, Yongtae Ahn, Kalimuthu Pandi, Heesoo Pyo, Naeun Kim, Seong-Taek Yun, Minseok Kim, Jeongae Lee, Jaeyoung Choi
Publikováno v: Minerals, Vol 11, Iss 4, p 372 (2021)
Chemical accidents have frequently occurred in South Korea as a result of the huge amount of chemicals being used in various industries. Even though fire accidents accounted for 71.9% of chemical accidents during 2008–2018 in South Korea, most ecol
Externí odkaz: https://doaj.org/article/c13afdd2cd3f42e2b335412f24de205f
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