A5039957122- Cryospheric studies and observations
- Arctic and Antarctic ice dynamics
- Winter Sports Injuries and Performance
- Seismic Waves and Analysis
- Polar Research and Ecology
- GaN-based semiconductor devices and materials
- Geology and Paleoclimatology Research
- Landslides and related hazards
- earthquake and tectonic studies
- Underwater Acoustics Research
- Methane Hydrates and Related Phenomena
- Climate change and permafrost
- Semiconductor materials and devices
- Ear Surgery and Otitis Media
- High-pressure geophysics and materials
- Seismic Imaging and Inversion Techniques
- Hearing, Cochlea, Tinnitus, Genetics
- Marine animal studies overview
- Seismology and Earthquake Studies
- Vestibular and auditory disorders
- Oceanographic and Atmospheric Processes
- Geophysics and Gravity Measurements
- Facial Nerve Paralysis Treatment and Research
- Adventure Sports and Sensation Seeking
- Ga2O3 and related materials
Korea Polar Research Institute
2016-2025
Gangneung–Wonju National University
2024
Polar (Finland)
2023
Columbia University
2022
Lamont-Doherty Earth Observatory
2022
Kyungpook National University
2022
University of Auckland
2022
Seoul National University of Education
2020
Korea University of Science and Technology
2016-2018
Korea Institute of Ocean Science and Technology
2017
Ice shelves control sea-level rise through frictional resistance, which slows the seaward flow of grounded glacial ice. Evidence from around Antarctica indicates that ice are thinning and weakening, primarily driven by warm ocean water entering into shelf cavities. We have identified a mechanism for destabilization where basal channels underneath cause drives fracture perpendicular to flow. These also result in surface deformation, diverts supraglacial rivers transverse fractures. report...
Benign paroxysmal positional vertigo (BPPV) is characterized by episodic and nystagmus provoked head motions. To study the characteristics of BPPV in a large group patients Korea, we retrospectively analyzed clinical features 1,692 (women: 1,146, 67.7%; men: 54.6, 32.3%; mean age: 54.8+/-14.0 yr), who had been diagnosed as trained neuro-otologists Dizziness Clinics. The diagnosis was based on typical elicited positioning maneuvers. Posterior semicircular canal involved 60.9% patients,...
Abstract. Antarctica's Getz Ice Shelf has been rapidly thinning in recent years, producing more meltwater than any other ice shelf the world. The influx of fresh water is known to substantially influence ocean circulation and biological productivity, but relatively little about factors controlling basal melt rate or how spatially distributed beneath shelf. Also unknown relative importance subglacial discharge from grounded sheet contributing export cavity. Here we compare observed spatial...
Abstract Gravity waves impacting ice shelves illicit a suite of responses that can affect shelf integrity. Broadband seismometers deployed on the Ross Ice Shelf, complemented by near‐icefront seafloor hydrophone, establish association strong icequake activity with ocean gravity wave amplitudes ( A G ) below 0.04 Hz. The Shelf‐front seismic vertical displacement S V are well correlated , allowing estimating frequency‐dependent transfer function from amplitude to icefront T f )). is 0.6–0.7 at...
Dense, cold waters formed on Antarctic continental shelves descend along the margin, where they mix with other Southern Ocean to form Bottom Water (AABW). AABW then spreads into deepest parts of all major ocean basins, isolating heat and carbon from atmosphere for centuries. Despite AABW’s key role in regulating Earth’s climate long time scales recording conditions, remains poorly observed. This lack observational data is mostly due two factors. First, originates shelf slope situ...
Abstract High Salinity Shelf Water (HSSW) formed in the Ross Sea of Antarctica is a precursor to Antarctic Bottom (AABW), water mass that constitutes bottom limb global overturning circulation. HSSW production rates are poorly constrained, as in-situ observations scarce. Here, we present high-vertical-and-temporal-resolution salinity time series collected austral winter 2017 from mooring Terra Nova Bay (TNB), one two major sites Sea. We calculate an annual-average rate ~0.4 Sv (10 6 m 3 s −1...
The Korea Polar Seismic Network (KPSN) was installed with 4 broadband seismometers in 2011 around Mt. Melbourne, located Northern Victoria Land, Antarctica, ~30 km North of the Jang Bogo station (JBG). KPSN extended to David Glacier 7 South. Currently, consists 21 seismic stations, including at JBG, and covers from South Rittmann Coulman Island North.The Extreme Geoscience Group (EGG) Research Institute (KOPRI) has been developing a local earthquake catalog utilizing continuous data KPSN,...
Outlet glaciers play a crucial role in transporting ice from the interior of Antarctic Ice Sheet to coast, where they transition into floating shelves at grounding line. Shear margins, which separate these fast-moving relatively stationary ice, are regions intense lateral shearing that generate side drag—a resistive force counteracts glacier driving stress and mitigates sea-level rise. The nature this drag depends largely on bulk stiffness, property is poorly understood due...
Deploying long-term, passive acoustic sensors in the polar ocean allows us to record a wide variety of sounds related air-sea interactions, including icequakes from sea-ice, icebergs, and ice shelves, as well vocalizations marine mammals noise human activities. The combination these specific location time period is often referred “soundscape,” characteristics serve tool monitor changes local environment.The Korea Polar Research Institute NOAA/Pacific Marine Environmental...
Extensive surface melting has been observed during the austral summer, particularly in Antarctic Peninsula and peripheral regions. A warming climate change is expected to further increase both precipitation due rising air temperatures. The precipitation, including liquid solid phases, contributes maintaining ice mass, whereas reduces thickness promotes hydrofracturing of shelves, resulting acceleration mass loss. Surface Energy Mass balance model Intermediate Complexity (SEMIC) a...
Some of the most dramatic effects climate change have been observed in Earth's polar regions. In Greenland, ice loss from Greenland sheet has accelerated recent years [ Shepherd et al ., 2012]. Outlet glaciers are changing their behavior rapidly, with many thinning, retreating, and accelerating Joughin 2004]. The weighing on crust mantle below allowed both to rebound, resulting high rock uplift rates Bevis Changes cover meltwater production influence sea level feedbacks; they expected...
Abstract Antarctica’s ice shelves buttress the continent’s terrestrial ice, helping slow loss of grounded into ocean and limiting sea level rise. Ice-ocean interaction plays a critical role in shelf stability by driving basal melt rates. Consequently, improved prediction future state lies understanding coastal mechanics that deliver heat to their cavities. Here, we present autonomous glider-based observations coherent structure at calving front cold-water cavity (Nansen Ice Shelf, East...
© 2024 American Meteorological Society. This published article is licensed under the terms of default AMS reuse license. For information regarding this content and general copyright information, consult Copyright Policy (www.ametsoc.org/PUBSReuseLicenses). Corresponding author: Clare Eayrs, clare.eayrs@kopri.re.kr
Abstract. Continuous moored time series of temperature, salinity, pressure and current speed direction are great importance for understanding the continental shelf under-ice-shelf dynamics thermodynamics that govern water mass transformations ice melting in around Antarctic marginal seas. In these regions, icebergs sea make ship-based mooring deployment recovery challenging. Nevertheless, over decades, expeditions fringe Antarctica sporadically deployed recovered hundreds instruments,...
The importance and volume of digital evidence has already surpassed that analog evidence. However, the normative framework for is still not clearly established in law. objects are vessels evidence, such as computers, cell phones, information storage media, may be subject to existing regulations. rules seizing searching on them sufficient. norms only partially stipulated Criminal Procedure Act Code Investigation, most formed through Supreme Court precedents, specific contents orders,...
Monitoring changes in the marine environment is important for both oceanography and ecology study as it helps us understand process by which oceanic conditions influence entire ecosystem. In Antarctica, mammals encounter substantial due to seasonal variation of water mass composition complicated submarine topography. However, unbroken observations on ocean are highly restricted summer season only when research vessels available. this study, we explored how variations affect foraging...
The Getz Glaciers, situated near the Amundsen Sea in West Antarctica, represent third-largest source of freshwater discharge from Antarctic Ice Sheet. Understanding physical mechanisms driving ice loss this region is essential for refining projections future and its contributions to global sea-level rise. Subglacial hydrology has recently been recognized as a critical factor influencing long-term glacial mass balance. However, inland regions Glaciers remain relatively understudied compared...
Wintering periods are vital for the survival and reproductive success of Antarctic animals, yet their winter behaviors remain poorly understood. This study investigates movements foraging behavior Weddell seals (Leptonychotes weddellii), an indicator species Commission Conservation Marine Living Resources, at Terra Nova Bay in Ross Sea. Using CTD-Satellite Relay Data Loggers, which record head movement oceanographic data (temperature salinity), we tracked 48 individuals three consecutive...
In the cold south part of our world, there is a very large area ice called Getz where nine big rivers flow toward sea. These are moving faster than before, which bad news for people living near water everywhere. When this moves into warm sea water, it turns to and makes world's seas rise higher. Over last twenty-five years, these have started almost one-fourth some nearly half again as fast. This has caused enough turn make by one in thousand meter - might seem small, but affects millions...
Gram-stain-negative, aerobic, rod-shaped bacterial strains, designated HL-TH1 T and HL-TH5, were isolated from deep seawater (1127 m depth) of the Amundsen Sea, Antarctica. Phylogenetic analyses based on 16S rRNA gene sequence revealed that strains HL-TH5 members genus Qipengyuania with close relatives aerophila GH25 (99.3%), pacifica NZ-96 profundimaris G39 (99.1%) citrea RE35F/1 (98.8%). The complete genome sequences comprised a chromosome 3.2 Mbp plasmid 0.1 Mbp, DNA G+C content 64.1%....
Abstract. Terra Nova Bay in Antarctica is a formation region for high-salinity shelf water (HSSW), which major source of Antarctic Bottom Water. Here, we analyze spatiotemporal salinity variability with implications the local HSSW production. The variations Drygalski Basin and eastern near Crary Bank Ross Sea were investigated by analyzing hydrographic data from instrumented moorings, vessel-based profiles, available wind sea-ice products. Near-bed (∼660 m) (∼1200 increases each year...
Since 2001, hundreds of thousands hours underwater acoustic recordings have been made throughout the Southern Ocean south 60° S. Detailed analysis occurrence marine mammal sounds in these circumpolar could provide novel insights into their ecology, but manual inspection entirety all would be prohibitively time consuming and expensive. Automated signal processing methods now developed to point that they can applied data a cost-effective manner. However training evaluating efficacy automated...