Paleoceanographic change during the last deglaciation, east Sea of Korea

Kim, Jung-Moo; Kennett, James P.; Park, Byong-Kwon; Kim, Dae Choul; Kim, Gil Young; Roark, E. Brendan

doi:10.1029/1999pa000393

Cited by 57 publications

(35 citation statements)

References 21 publications

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“…Recently, improved chronology based on accelerator mass spectrometry radiocarbon datings and tephrochronology makes it possible to discuss detailed paleoenvironmental changes during the last 30 kyr (e.g., Kim et al, 2000;Gorbarenko and Southon, 2000;Takei et al, 2002;Ikehara, 2003;Itaki et al, 2004). However, the study of planktic foraminifera has been limited to stable isotope analysis and measurement of the sinistral or dextral coiling ratio of Neogloboquadrina pachyderma.…”

Section: Introductionmentioning

confidence: 99%

Japan Sea planktic foraminifera in surface sediments: geographical distribution and relationships to surface water mass

Domitsu

Oda

2005

Paleontological Research

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Abstract. Modern planktic foraminifera in 51 surface sediments from the Japan Sea, a marginal sea of the western North Pacific, were studied to reveal the relationships between geographical distribution and surface water masses in the Japan Sea. Twenty-four species belonging to 10 genera were identified, of which nine species, namely Neogloboquadrina incompta, Neogloboquadrina pachyderma, Globigerina quinqueloba, Globigerina bulloides, Globigerinoides ruber, Neogloboquadrina dutertrei, Pulleniatina obliquiloculata, Globigerinoides tenellus, and Globigerinita glutinata are predominant. We recognized four geographical distribution patterns of these dominant species that are related to hydrographic conditions in the Japan Sea. The transitional water formed by the mixture between the warm Tsushima Current and cold waters in the Japan Sea is optimal for N. incompta, while the distribution of N. pachyderma is matched with cold water in the northern Japan Sea. Globigerina quinqueloba and G. bulloides appear to be associated with less saline, nutrient-rich river water from the Changjiang (Yangtze River), and G. ruber, N. dutertrei, P. obliquiloculata, G. tenellus, and G. glutinata can be regarded as indicators of Tsushima Current water.

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Section: Introductionmentioning

confidence: 99%

Japan Sea planktic foraminifera in surface sediments: geographical distribution and relationships to surface water mass

Domitsu

Oda

2005

Paleontological Research

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“…이 연구가 수행된 조사지역은 한 국해양과학기술원이 수행하는 기후변화와 해양생태계 변 화를 모니터링하기 위한 과제에서 고정정점을 설정하여 정기적인 시료채취가 이루어지는 지점이다 (Fig. 1) (Kim et al 2000). 따뜻한 해류에 의해 동해로 유입되는 종으로 알려진 N. dutertrei (Oba et al 1991 …”

Section: 서 론 유공충은 탄산염을 생성하는 원생동물로 골격질unclassified

Occurrence of Modern Planktonic Foraminiferal Species and their Seasonal Variations around Jeju Island, Korea

Hyun¹,

Kimoto²,

Cho³

2013

Ocean and Polar Research

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: To investigate the occurrence of modern living planktonic foraminiferal species and their seasonal variations around Jeju Island, we conducted planktonic foraminiferal sampling at KIOST's regular sampling sites during 16 months. In total seven genus and 16 modern planktonic foraminiferal species were identified with six dominant species. Dominant species were Gloigerinoides sacculifer, Globigerinoides ruber, Globigerina bulloides, Noegloboquadrina dutertrei, Pulleniatina obliquiloculata, and Globorotalia inflata. Most of the species were characterized as being typical subtropical species and showed seasonal variations and/or intermittent occurrence from season to season. The occurrence of living foraminifera revealed a strong relationship with water temperature, but not with salinity. Species succession seems to occur along with water temperature changes. Some patch distribution and water temperature dependences appear to be significant since there is a high degree of variation in the occurrence patterns of species and standing stock. More detailed quantitative study is necessary to confirm the species diversity and seasonal variations of planktonic foraminifera and related ocean environmental changes.

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“…However, the past SST estimate based on organic geochemical method (C 37 alkenone unsaturation index) indicates that the glacial SST in the East Sea was abnormally warmer than today (Ishiwatari et al, 2001;Lee and Kim, 2002;Fujine et al, 2006). Planktonic foraminiferal δ 18 O records from the East Sea show isotopically lighter values during the last glaciation (Oba et al, 1991;Gorbarenko and Southon, 2000;Kim et al, 2000), indicating glacial warming and/or lowered salinity. It is important to know the true nature of glacial SST because knowledge of SST is essential for understanding the mechanisms that drive climate change.…”

Section: Introductionmentioning

confidence: 98%

Glacial sea surface temperature of the East Sea (Japan Sea) inferred from planktonic foraminiferal assemblage

2010

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In order to reconstruct the last glacial sea surface temperature (SST) of the East Sea, we investigated planktonic foraminiferal assemblage in the marine sediments of a piston core recovered from the Ulleung Basin, East Sea. For core top, the most dominant species is right coiling Neogloboquadrina incompta, while left coiling Neogloboquadrina pachyderma and Globigerina bulloides clearly dominate the glacial assemblages. Based on fauna count, we reconstructed past SST using modern analog technique (MAT) with a global dataset. However, the application of the global dataset may hinder the reconstruction of regional SST. In order to validate this, we tested for the foraminiferal assemblages of 51 surface sediments in the East Sea with MAT and the global dataset. The results show that the estimated MAT temperatures were completely different from the real SST of core top sites, indicating that MAT with the global dataset may not be applicable for the East Sea SST reconstruction. Therefore, we developed new statistical calculation method using East Sea fauna dataset only. According to this method, the glacial SST was 2°C lower than today for August, and 6°C lower for February. This glacial−interglacial change of August temperature is relatively smaller than other results, while February temperature is comparable.

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Paleoceanographic change during the last deglaciation, east Sea of Korea

Cited by 57 publications

References 21 publications

Japan Sea planktic foraminifera in surface sediments: geographical distribution and relationships to surface water mass

Japan Sea planktic foraminifera in surface sediments: geographical distribution and relationships to surface water mass

Occurrence of Modern Planktonic Foraminiferal Species and their Seasonal Variations around Jeju Island, Korea

Glacial sea surface temperature of the East Sea (Japan Sea) inferred from planktonic foraminiferal assemblage

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