A5051134373- Geology and Paleoclimatology Research
- Methane Hydrates and Related Phenomena
- Geological formations and processes
- Geological and Geophysical Studies
- Hydrocarbon exploration and reservoir analysis
- Isotope Analysis in Ecology
- Karst Systems and Hydrogeology
- Paleontology and Stratigraphy of Fossils
- Maritime and Coastal Archaeology
- Geological Modeling and Analysis
- Building materials and conservation
- Environmental Engineering and Cultural Studies
- Geotourism and Geoheritage Conservation
- Ecology and Conservation Studies
- Landslides and related hazards
- earthquake and tectonic studies
- Marine and Coastal Research
- Tree-ring climate responses
- Geomagnetism and Paleomagnetism Studies
- Pleistocene-Era Hominins and Archaeology
- Cryospheric studies and observations
- Geochemistry and Elemental Analysis
- Transportation Safety and Impact Analysis
- Coastal wetland ecosystem dynamics
- Marine Sponges and Natural Products
Kangwon National University
2010-2025
Institute for Basic Science
2023
Pusan National University
2023
Korea Institute of Geoscience and Mineral Resources
2014-2015
Korea Polar Research Institute
2010
Cave microorganisms associated with calcareous speleothems have been reported to facilitate calcium carbonate precipitation through crystal nucleation and mineral growth. In this study, we used carbonate-forming enriched from cave water droplets stalactite biofilm samples induce of Mg2+ or Sr2+-coprecipitated minerals explored their mineralogical properties. The for these analyses were collected Yongcheon Cave, a lime-decorated lava tube located on Jeju Island in South Korea. They included...
The Holocene variability in the East Asian summer monsoon (EASM) based on speleothem δ18O records has inconsistencies timing, duration, and expression of millennial-scale events among nearby regions, even within same cave. Here, we present another stalagmite record with multi-decadal time resolution from temperate Korean Peninsula (KP) for last 5500 years order to compare EASM Southeast Asia. Based our new record, since mid-Holocene were successfully identified KP, representing a noticeable...
ABSTRACT The Jeongok‐ri Paleolithic site in the central Korean peninsula is known as first findspot of Acheulean‐type hand axes East Asia. Although many previous studies have investigated depositional environments sediments across occupation, they remain controversial. In this study, we collected an 11‐m‐long core to obtain evidence from systematic surface microtextures quartz grains (SMQs) concerning archeological site. SMQs are characterized by dominant angular subangular outlines and...
The manganese content of aragonitic bivalve shells is a potential archival indicator temporal Mn bioavailability in aquatic environments. speciation mechanism biogenic aragonite minerals remains elusive because the analog challenging to synthesize, and metastable phase has yet be fully resolved experimentally. In this study, we performed density functional theory (DFT) computations hypothetical Mn-doped examine its local coordination structure thermodynamic electronic properties. Our DFT...
Abstract East Asian summer monsoon (EASM)-driven rapid hydroclimatic variation is a crucial factor with major socioeconomic impacts. Nevertheless, decadal- to centennial-scale EASM variability over the last two millennia still poorly understood. Pollen-based quantitative annual precipitation (PqPann) and reconstructed by artificial neural networks (ANNs) for period 650–1940 CE were from paleo-reservoir in South Korea. ANNs reconstruction was performed compensate hiatus section. On decadal...
Abstract Textural and stable isotopic records of a composite-type speleothem from Gwaneum Cave in the eastern part Korean peninsula show prominent paleoenvironmental changes since MIS (marine oxygen isotope stage) 5a. Based on 230 Th/ 234 U dating, experienced growth 90.9 ± 6.5 ka to 1.2 0.5 with several hiatuses. Four phases (A, B, C D) are recognized based type texture. Very irregular laterally discontinuous laminae Phases B indicate that cave coralloids grew over stalagmite (Phase A) when...
Understanding paleoenvironmental changes and corresponding driving forces can provide valuable information for predicting preparing future climate change. However, under the complex system, mechanisms behind hydroclimatic variability in terms of timescales magnitude are still unclear, various ecological responses not clear. Here, we reconstruct history swamp evolution southern part Korean Peninsula during Holocene based on multi-proxy data (palynomorphs, microscopic charcoal, diatoms, grain...