Pollen records of orbitally modulated variation in East Asian winter monsoon intensity and freshwater inflow to the Ulleung Basin of East Sea, South Korea, during the last glacial period

Jun, Chang-Pyo; Yi, Sangheon; Kim, Chang-Hwan; Park, Chan Hong; Lee, Seong-Joo

doi:10.1016/j.margeo.2020.106365

Cited by 6 publications

(2 citation statements)

References 77 publications

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“…They probably existed outside the cave, and were preserved in sediments after being transported into the cave by water. This assumption is supported by grass pollen in the coastal wetland (Yang et al, 2016;Song et al, 2017) and neritic to semi-pelagic ocean (Jun et al, 2020;Kim et al, 2020). The median (Φ) sand grain size and Ti/Al ratio (Fig.…”

Section: Occurrence Of Freshwater Algae and Grass Pollen: Possible Association With Precipitationmentioning

confidence: 76%

A preliminary study of natural environmental change and its impact on early Late Paleolithic people in the northeast central Korean Peninsula during Marine Istope Stage 3 (40–30k cal a bp)

Han

Oh³

et al. 2021

J Quaternary Science

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We comprehensively analyzed sediments obtained from an archeological excavation. A trench sediment profile of Maedun Cave (MC), South Korea, was analyzed geoarchaeologically. Multi-proxy analyses (palynomorphs, grain size, magnetic susceptibility, animal bones and artifacts) reflected the vegetation, hydroclimate and lives of prehistoric people at Marine Isotope Stage (MIS) 3 (ca. 40-30k cal a BP) in the early Late Paleolithic. The palynoflora consisted of pollen and non-pollen palynomorphs. Under the air-circulation system in the cave, anemophilous pollen flowed in during the day, whereas waterborne pollen and spores, and freshwater algae, were transported by flooding during the summer monsoon rainy season. Mixed conifer and deciduous broad-leaved forest with an understory of pteridophytes flourished around the north-east central Korean Peninsula during MIS 3. Freshwater algae and grass pollen records may reflect precipitation intensity. It is assumed that they had flowed in during flooding caused by high precipitation during the enhanced East Asian summer monsoon, corresponding to Dansgaard-Oeschger (D/O) events 5 and 8 of δ 18 O GISP2 and Hulu Cave. The prehistoric people hunted herbivorous animals in the area around MC and sheltered inside it seasonally. They also used the grains of oats growing near the dwelling as a source of food.

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Section: Occurrence Of Freshwater Algae and Grass Pollen: Possible Association With Precipitationmentioning

confidence: 76%

A preliminary study of natural environmental change and its impact on early Late Paleolithic people in the northeast central Korean Peninsula during Marine Istope Stage 3 (40–30k cal a bp)

Han

Oh³

et al. 2021

J Quaternary Science

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“…Many studies have used various proxies to reconstruct the Holocene paleoclimate of the Korean Peninsula (KP) (Bae et al, 2020; Jo et al, 2011; Lim et al, 2017b, 2019; Song et al, 2018; Yum et al, 2003). In particular, many qualitative studies have been conducted based on pollen records (Chung et al, 2010; Jun et al, 2020; Kim et al, 2020; Lee et al, 2020a; Yi and Saito, 2003; Yoon et al, 2012). However, pollen-based quantitative paleoclimate reconstruction studies of the KP remain rare.…”

Section: Introductionmentioning

confidence: 99%

Modern pollen–climate relationships and their application for pollen-based quantitative climate reconstruction of the mid-Holocene on the southern Korean Peninsula

Lee

Jun

et al. 2021

The Holocene

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A modern pollen dataset is a prerequisite for reconstructing quantitative paleoclimate and paleovegetation cover using fossil pollen records. Although multiple modern pollen–climate datasets have been established covering a wide range of climate conditions, such datasets are exceedingly rare for the Korean Peninsula (KP). In this study, we acquired a modern pollen dataset from 198 surface soil samples collected on 37 mountains on the southern KP. Redundancy analysis (RDA) and variation partitioning results identified mean annual temperature (Tann) as the most important climate variable shaping pollen assemblages on the southern KP. Using the pollen–climate relationships inferred from the RDA, we applied the Huisman–Olff–Fresco model and determined that arboreal pollen taxa responded sensitively to the climatic gradient, whereas non-arboreal pollen taxa did not. We applied weighted averaging–partial least squares (WA-PLS) and the modern analog technique (MAT) to the pollen dataset, and a comparison of the results showed that MAT performed better than WA-PLS. A transfer function was applied to fossil pollen records from the areas covered by our dataset; the results confirmed that annual precipitation (Pann) and Tann were modulated by different mechanisms, with Pann strongly affected by El Niño–Southern Oscillation-driven typhoons during the Holocene, whereas Tann was mainly influenced by the Tsushima Warm Current from 7500 to 5100 cal yr BP depending on Kuroshio Current inflow intensity, and subsequently followed by the East Asian winter monsoon during 5100–3400 cal yr BP.

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Branched GDGT in the Hupo Trough (Southwestern East Sea) as a Record of the Terrestrial Climate Change in East Asia Since the Last Glacial Maximum

Park

Khim

2023

Ocean Sci. J.

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Pollen records of orbitally modulated variation in East Asian winter monsoon intensity and freshwater inflow to the Ulleung Basin of East Sea, South Korea, during the last glacial period

Cited by 6 publications

References 77 publications

A preliminary study of natural environmental change and its impact on early Late Paleolithic people in the northeast central Korean Peninsula during Marine Istope Stage 3 (40–30k cal a bp)

A preliminary study of natural environmental change and its impact on early Late Paleolithic people in the northeast central Korean Peninsula during Marine Istope Stage 3 (40–30k cal a bp)

Modern pollen–climate relationships and their application for pollen-based quantitative climate reconstruction of the mid-Holocene on the southern Korean Peninsula

Branched GDGT in the Hupo Trough (Southwestern East Sea) as a Record of the Terrestrial Climate Change in East Asia Since the Last Glacial Maximum

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