Age Model and Oxygen Isotope Stratigraphy of Site ODP1202 in the Southern Okinaw a Trough, Northwestern Pacific

Wei, Kuo-Yen; Mii, Horng‐Sheng; Huang, Chen

doi:10.3319/tao.2005.16.1.1(ot)

Cited by 39 publications

(32 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…3b). This also suggests a relatively stable deposition environment at this site compared with core ODP 1202 (Wei et al 2005). We conclude that the sedimentation rates at the MD012404 site are relatively higher in major glacial stages than in interglacial stages.…”

Section: Md012404 Age Modelmentioning

confidence: 61%

“…The NBS-19 was used as the carbonate standard for calibrating the foraminifer shell samples to the Peedee belemnite (PDB). The oxygen isotope record of ODP 1202 is published in this volume and also is used here for the purpose of stratigraphy and for comparing these two records under a common chronostatigraphic framework (Wei et al 2005). …”

Section: Stable Isotope Analysismentioning

confidence: 99%

“…An age model of core ODP 1202 (Wei et al 2005) was established based on planktic foraminifer (N. dutertrei) oxygen isotope stratigraphy and AMS 14 C dating on foraminifer shells from selected intervals of a composite record of the core. The composite record of ODP 1202 was constructed using lithological and magnetic susceptibility data of cores from Site 1202 Hole B and D. Shipboard observations suggested the existence of a turbidite layer between 230 -280 mbsf at Site 1202D (Shipboard Scientific Party 2002), we therefore attempted to only compare core data of Site 1202B from the top to 140 mbsf with those of MD012404.…”

Section: Comparison Of Md012404 and Odp 1202 Oxygen Isotope Recordsmentioning

confidence: 99%

See 2 more Smart Citations

Foraminiferal Oxygen Isotope Stratigraphy and High-Resolution Organic Carbon, Ca rbonate Records from the Okinawa Trough (IMAGES MD012404 and ODP Site 1202)

Chang¹,

Wu²,

Wei³

et al. 2005

Terr. Atmos. Ocean. Sci.

Self Cite

View full text Add to dashboard Cite

show abstract

Section: Md012404 Age Modelmentioning

confidence: 61%

Section: Stable Isotope Analysismentioning

confidence: 99%

Section: Comparison Of Md012404 and Odp 1202 Oxygen Isotope Recordsmentioning

confidence: 99%

See 1 more Smart Citation

Foraminiferal Oxygen Isotope Stratigraphy and High-Resolution Organic Carbon, Ca rbonate Records from the Okinawa Trough (IMAGES MD012404 and ODP Site 1202)

Chang¹,

Wu²,

Wei³

et al. 2005

Terr. Atmos. Ocean. Sci.

Self Cite

View full text Add to dashboard Cite

show abstract

“…This study presents result from samples in the upper 60.50 m sediment interval of Hole 1202B, an interval of an age of 13.32 ka, according to the data of AMS 14 C dating obtained by Wei et al (2005). The bottom of the Holocene was placed at 10.0 ka and at the depth of 35.3 mbsf in Hole 1202B.…”

Section: Datesmentioning

confidence: 99%

“…Stable oxygen isotope stratigraphy for Site 1202 was established by analyzing planktonic foraminifer Neogloboquadrina dutertrei and AMS 14 C dating for Hole 1202B by Wei et al (2005). Both data of isotopes and AMS 14 C dating were used in this study for stratigraphic correlation and age model, for example, the AMS 14 C data were used for calibrating ages of samples.…”

Section: Datesmentioning

confidence: 99%

Calcareous Nannofossils and Variation of the Kuroshio Current in the Okinawa Tro ugh During the Last 14000 Years

Su¹,

Wei²

2005

Terr. Atmos. Ocean. Sci.

Self Cite

View full text Add to dashboard Cite

Two nannofossil ratio indices were designed and employed in this study: (1) ratio of Florisphaera profunda against F. profunda, Emiliania huxleyi and Gephyrocapsa oceanica (F-EG ratio) as a nannofossil proxy of the Kuroshio Current, (2) ratio of G. oceanica against F. profunda and E. huxleyi and G. oceanica (G-FE ratio) as a proxy of near-coast environment. Results from the 14 surface nannofossil samples demonstrate that the F-EG ratio is > 15% in the assemblage lying directly under the main route of the Kuroshio Current, whereas it is very low (< 10%) in sediments off the current. High ratios G-FE (> 30%) were seen from all samples on the East China Sea continental shelf or from near-coast cores. Down hole nannofossil record from the top 60 mbsf sediment interval at ODP Hole 1202B reflects the change of the Kuroshio Current in the last glacial and postglacial period since 14 ka. Extreme low F-EG ratio together with very high G-FE ratio at Hole 1202B during the time of the latest Pleistocene and the earliest Holocene suggest the absence of the Kuroshio Current in the area studied. The event of intrusion of the Kuroshio Current was clearly recorded by a dramatically increase of F-EG ratio and notably a reduction in the G-FE ratio around 9 ka. Furthermore, based on the variation of the F-EG ratio and δ 18 O of planktonic foraminifera Neogloboquadrina dutertrei, variation of the Kuroshio Current in the Holocene shows three long-term cycles (with a periodicity of ~3000 yr). TAO, Vol. 16, No. 1, March 2005 96

show abstract

East Asian Winter Monsoon Variations and Their Links to Arctic Sea Ice During the Last Millennium, Inferred From Sea Surface Temperatures in the Okinawa Trough

Jiang

et al. 2018

Paleoceanog and Paleoclimatol

View full text Add to dashboard Cite

The East Asian winter monsoon (EAWM) significantly impacts living conditions in a large part of Asia, and therefore, it is important to understand its major driving mechanisms. Winter sea surface temperature (SSTW) and circulation in the southern Okinawa Trough are today both primarily controlled by the EAWM. Here we present a new SSTW reconstruction for the last millennium based on a diatom record from sediment core MD05‐2908, from the continental slope of the southern Okinawa Trough off northeastern Taiwan. Our reconstruction indicates that SSTW varied between 14.1 and 19.6°C over the past 1,000 years. Changes in SSTW in the southern Okinawa Trough correspond closely to the index of warm winters based on historical documents from the East Asian monsoon domain. This implies that our SSTW record can be used to reconstruct EAWM variability during the last millennium. Comparisons with the reconstructed winter Arctic Oscillation (AO, developed from historical snow anomaly events in Eastern Asia) and Arctic sea ice cover reveal a significant positive correlation between the EAWM and AO during the time interval from 1000–1400 Common Era (C.E.), coinciding with reduced sea ice cover. However, there is no significant correlation with increased sea ice cover during the interval from 1400 to 1700 C.E. This suggests that the reduction in Arctic sea ice may periodically have played a role in strengthening the relationship between the EAWM and the AO during the last millennium and that the current and future reduction in Arctic sea ice may have significant consequences for the EAWM.

show abstract

Age Model and Oxygen Isotope Stratigraphy of Site ODP1202 in the Southern Okinaw a Trough, Northwestern Pacific

Abstract: ABSTRACT1 Department of Geosciences, National Taiwan University, Taipei, Taiwan, ROC 2 Department of Earth Sciences, National Taiwan Normal University, Taipei, Taiwan, ROC

Cited by 39 publications

References 14 publications

Foraminiferal Oxygen Isotope Stratigraphy and High-Resolution Organic Carbon, Ca rbonate Records from the Okinawa Trough (IMAGES MD012404 and ODP Site 1202)

Foraminiferal Oxygen Isotope Stratigraphy and High-Resolution Organic Carbon, Ca rbonate Records from the Okinawa Trough (IMAGES MD012404 and ODP Site 1202)

Calcareous Nannofossils and Variation of the Kuroshio Current in the Okinawa Tro ugh During the Last 14000 Years

East Asian Winter Monsoon Variations and Their Links to Arctic Sea Ice During the Last Millennium, Inferred From Sea Surface Temperatures in the Okinawa Trough

Contact Info

Product

Resources

About