Dhongil Lim

Korea Institute of Ocean Science and Technology

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Zhaokai Xu

Institute of Oceanology

Tiegang Li

Chinese Academy of Geological Sciences

Hoi‐Soo Jung

Korea Institute of Ocean Science and Technology

Shiming Wan

Tsinghua University

Jinyong Choi

Kunsan National University

Jihun Kim

Korea Institute of Ocean Science and Technology

So-Young Kim

Astellas Pharma (China)

Peter D. Clift

University College London

Hongjin Chen

Xinjiang Agricultural University

Fengming Chang

Institute of Oceanology

Cooperative Institutions

Korea Institute of Ocean Science and Technology

112

Korea University of Science and Technology

Seoul National University

Korea Polar Research Institute

Chinese Academy of Sciences

Qingdao National Laboratory for Marine Science and Technology

Hanyang University

Institute of Oceanology

Sungkyunkwan University

University of Chinese Academy of Sciences

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Historical record of metal accumulation and lead source in the southeastern coastal region of Korea

Marine Pollution Bulletin (2013)

Dhongil Lim Seung Woon Jung Man‐Sik Choi Sun Mee Kang Hoi Soo Jung

Radiogenic nuclide

10.1016/j.marpolbul.2013.06.018

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Citations (17)

Significance of continental surface erosion and weathering in modulating the greenhouse gas CO₂ level during the Quaternary glacial periods: An integration of sedimentary records in tropical marginal seas

Goldschmidt Abstracts (2021)

Zhaokai Xu Shiming Wan Dhongil Lim Christophe Colin Peter D. Clift

10.7185/gold2021.4486

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Citations (0)

Magnetic Properties of Deep‐Sea Sediments From the North Pacific: A Proxy of Glacial Deep‐Water Ventilation

Geochemistry Geophysics Geosystems (2018)

Ji Young Shin Yongjae Yu Inah Seo Kiseong Hyeong Dhongil Lim

Abstract The magnetic properties of deep‐sea sediments in the North Pacific vary in sync with glacial‐interglacial climatic changes and have thus been considered as a paleoclimate indicator. However, the causes of these variations in magnetic properties, including the concentration, grain size, and mineralogy of magnetic minerals, remain poorly understood. Here we investigate the magnetic properties of deep‐sea sediments recovered from the Shatsky Rise in the North Pacific to investigate the cause of the variability associated with glacial‐interglacial cycles. Compared to the potential sediment provenances, the interglacial‐stage and more than half of the glacial‐stage sediments reveal magnetic mineralogical properties (S ratio and L ratio) of the Gobi and Taklimakan deserts, probably indicating dust from the both sources. During glacials, an abrupt decrease in the concentration of magnetic minerals is associated with increases in the average grain size and in the proportion of hematite relative to magnetite. The changes during glacials are mostly a result of dissolutions of magnetite by exposure to ambient ocean environments after deposition. Both magnetic and geochemical proxies validate that poor ventilation of the glacial deep waters in the North Pacific possibly induced iron‐reducing conditions. With comprehensive compilation with the S‐ratio data in the North Pacific sediments, our result indicates that the poorly ventilated deep waters reached up to water depths of ~2,500 m during glacials.

Magnetic mineralogy

10.1029/2018gc007735

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Citations (8)

Zoning of coastal environments based on sediment textural and geochemical characteristics and their major oceanographic constraints: A case study in South Korea

Journal of Asian Earth Sciences (2021)

Hoi‐Soo Jung Dhongil Lim Zhaokai Xu Jihun Kim Jun‐Ho Lee

10.1016/j.jseaes.2021.104883

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Long-term history of sediment inputs to the eastern Arabian Sea and its implications for the evolution of the Indian summer monsoon since 3.7 Ma

Geological Magazine (2018)

Mingjiang Cai Zhaokai Xu Peter D. Clift Boo‐Keun Khim Dhongil Lim

Abstract We present a new set of clay mineral and grain-size data for the siliciclastic sediment fraction from International Ocean Discovery Program (IODP) Site U1456 located in the eastern Arabian Sea to reconstruct the variabilities in the continental erosion and weathering intensity in the western Himalaya, elucidate the sediment source-to-sink processes and discuss the potential controls underlying these changes since 3.7 Ma. The clay minerals mainly consist of smectite (0–90%, average 44%) and illite (3–90%, average 44%), with chlorite (1–26%, average 7%) and kaolinite (0–19%, average 5%) as minor components. The compositional variations in the clay minerals at IODP Site U1456 suggest four phases of sediment provenance: the Indus River (phase 1, 3.7–3.2 Ma), the Indus River and Deccan Traps (phase 2, 3.2–2.6 Ma), the Indus River (phase 3, 2.6–1.2 Ma) and the Indus River and Deccan Traps (phase 4, 1.2–0 Ma). These provenance changes since 3.7 Ma can be correlated with variations in the Indian summer monsoon intensity. The siliciclastic sediments in the eastern Arabian Sea were mainly derived from the Indus River when the Indian summer monsoon was generally weak. In contrast, when the Indian summer monsoon intensified, the siliciclastic sediment supply from the Deccan Traps increased. In particular, this study shows that the smectite/(illite+chlorite) ratio is a sensitive tool for reconstructing the history of the variation in the Indian summer monsoon intensity over the continents surrounding the Arabian Sea since 3.7 Ma.

Siliciclastic

Illite

Indus

10.1017/s0016756818000857

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Citations (22)

Elemental and Sr–Nd isotopic compositional disparity of riverine sediments around the Yellow Sea: Constraints from grain-size and chemical partitioning

Applied Geochemistry (2015)

Dhongil Lim Hoi‐Soo Jung Zhaokai Xu Kap-Sik Jeong Tiegang Li

Radiogenic nuclide

Silicic

Silt