Holocene and Eemian climatic optima in the Korean Peninsula based on textural and carbon isotopic records from the stalagmite of the Daeya Cave, South Korea

Jo, Kyoung Nam; Woo, Kyung Sik; Lim, Hyoun Soo; Cheng, Hai; Edwards, R. Lawrence; Wang, Yongjin; Jiang, Xiuyang; Kim, Ryeon; Lee, Jae Il; Yoon, Ho Il; Yoo, Kyu Cheul

doi:10.1016/j.quascirev.2011.02.012

Cited by 30 publications

(21 citation statements)

References 78 publications

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“…Oxygen isotope compositions ranged from −7.68‰ to −6.57‰, with an average of −7.03‰ and a standard deviation of ±0.20‰. These are similar to the values reported previously for recent and fossil speleothems from the KP 13 – 15 . In addition, the isotopic data did not show any direct relationships with two distinct visible laminae and the lower part of the BN-1 with high levels of detrital components.…”

Section: Resultssupporting

confidence: 85%

“…Previous studies on the temperate KP have not been able to use speleothem δ 18 O records as paleoclimatic evidence mainly because the speleothem samples have shown relatively small δ 18 O changes over time, and the records have been discontinuous and of low resolution 15 , 17 . However, because the BN-1 δ 18 O record used in this study is continuous for the last 5500 years and has a multi-decadal time resolution (Fig.…”

Section: Discussionmentioning

confidence: 99%

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1000-Year Quasi-Periodicity of Weak Monsoon Events in Temperate Northeast Asia since the Mid-Holocene

Lee

et al. 2017

Sci Rep

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The Holocene variability in the East Asian summer monsoon (EASM) based on speleothem δ18O records has inconsistencies in timing, duration, and expression of millennial-scale events among nearby regions, and even within the same cave. Here, we present another stalagmite δ18O record with multi-decadal time resolution from the temperate Korean Peninsula (KP) for the last 5500 years in order to compare with Holocene millennial-scale EASM events from Southeast Asia. Based on our new stalagmite δ18O record, millennial-scale events since the mid-Holocene were successfully identified in the KP, representing a noticeable cyclic pattern with a periodicity of around 1000 years. We propose that the Holocene millennial-scale events are common hydroclimatic phenomena at least in the East Asian monsoon system. Meanwhile, the shorter periodicity of millennial-scale events than that of the North Atlantic region is likely to decouple the EASM system from the North Atlantic climate system. This observation suggests that weak EASM and North Atlantic Bond events may have been induced independently by direct solar activity (and then possible feedback) and ocean–ice sheet dynamics, respectively, rather than simple propagation from the North Atlantic to the EASM regions.

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Section: Resultssupporting

confidence: 85%

Section: Discussionmentioning

confidence: 99%

1000-Year Quasi-Periodicity of Weak Monsoon Events in Temperate Northeast Asia since the Mid-Holocene

Lee

et al. 2017

Sci Rep

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“…Two other Pooideae phytolith pulses were observed, centered at ca 7.7 and 7.3 ka BP ( Figure 5), suggesting that Pooideae probably increased at these times-although these peaks were shorter and weaker than those of the 8.2 ka event. These two weak Pooideae peaks matched two weak Asian Monsoon intervals identified in Chinese stalagmites (Dykoski et al, 2005;Wang et al, 2005;Feng et al, 2020), which suggested that Pooideae were capable of responding to these weaker cold events, which have also been documented in many palaeo-climate reconstructions for both Europe (Constantin et al, 2007), and for areas influenced by the East Asian Monsoon (Liew et al, 2006;Tao et al, 2006;Jo et al, 2011;Selvaraj et al, 2011;Li et al, 2015).…”

Section: Discussionmentioning

confidence: 56%

Phytolith records of flourishing early Holocene Pooideae linked to an 8.2 ka cold event in subtropical China

Zuo

Lü

et al. 2020

Elem Sci Anth

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The grass subfamily Pooideae originated in a temperate niche during the late Cretaceous; it is the largest Poaceae subfamily, consisting of almost 4,000 species, which are distributed worldwide. Pooideae responses to climate changes at different time scales, and different ecological zones are thus important in understanding Poaceae evolutionary processes and their relationship with climate change. In the study described in this article, we reconstructed Pooideae variability during the early Holocene, as inferred by a phytolith sequence from the Lower Yangtze in subtropical China. The phytolith assemblage was marked by three increases in Pooideae phytoliths, dated to ca 8.4–8.0, 7.8–7.6, and 7.4–7.2 ka BP (before present, 1950 AD), with each representing pronounced increases in Pooideae extent and distribution. All these increases were within age ranges that agreed well with the timing of weak Asian Monsoon events, at 8.2, 7.7, and 7.3 ka BP. The first Pooideae flourishing period in subtropical China was the most significant, lasting for approximately four centuries and being characterized by a double peak, which equated with an event at 8.2 ka. This suggested that cold and/or dry conditions—which occurred over a period of several hundred years and were linked to weakening of the Asian monsoon—probably caused Pooideae to flourish in the Lower Yangtze region. Comparison of two diagnostic trapezoid phytolith types—namely wavy and wavy narrow—which showed different changes between ca 8.4 and 8.0 ka BP, suggested that they responded differently to the climate change represented by the 8.2 ka event. Our phytolith records have provided not only new data clarifying the detailed Pooideae response to the 8.2 ka event but also a reliable index for past cold climates in subtropical China.

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“…Heavy rainfall in East Asia including Korea and China is controlled by the East Asian monsoon system consisting of summer and winter monsoons (An, 2000; Ho et al, 2003; Wang and Zhou, 2005; Cosford et al, 2008; Jo et al, 2011, 2014). During the summer season, northward advances of the rain belt (“Jangma” in Korean), may result in heavy rainfall and resultant flooding events.…”

Section: Discussionmentioning

confidence: 99%

Holocene changes in flooding frequency in South Korea and their linkage to centennial-to-millennial-scale El Niño–Southern Oscillation activity

et al. 2017

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To trace past changes in flooding frequency, we investigated fluvial sediments in the middle reach of the Nakdong River, South Korea. Sediments with larger grain size, lower total organic carbon percentage, and depleted δ13C values in the recovered sediment cores were interpreted as periods of more frequent flooding. Patterns of decreased long-term flooding frequency and vegetation changes during the early to late Holocene were similar to the decreasing regional summer monsoon intensity. Multicentennial frequent flooding periods in the study area (2900–3400 cal yr BP, 3600–3900 cal yr BP, 4600–5300 cal yr BP, and 5800–6400 cal yr BP) corresponded to stronger El Niño–Southern Oscillation (ENSO) activity periods. Based on previous studies showing that high-frequency tropical typhoon-driven coastal inundation along the western coast of Japan during the middle to late Holocene was coupled with stronger ENSO activity, it is likely that the observed centennial-to-millennial-scale flood frequency change in South Korea was influenced mainly by changes in the genesis and tracks of tropical typhoons at centennial-to-millennial time scales. This suggests that the centennial-to-millennial-scale hydrologic changes in East Asia were linked to the remote atmospheric-oceanic circulation changes represented by an ENSO-like pattern.

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Holocene and Eemian climatic optima in the Korean Peninsula based on textural and carbon isotopic records from the stalagmite of the Daeya Cave, South Korea

Cited by 30 publications

References 78 publications

1000-Year Quasi-Periodicity of Weak Monsoon Events in Temperate Northeast Asia since the Mid-Holocene

1000-Year Quasi-Periodicity of Weak Monsoon Events in Temperate Northeast Asia since the Mid-Holocene

Phytolith records of flourishing early Holocene Pooideae linked to an 8.2 ka cold event in subtropical China

Holocene changes in flooding frequency in South Korea and their linkage to centennial-to-millennial-scale El Niño–Southern Oscillation activity

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