A broad deglacial delta C-13 minimum event in planktonic foraminiferal records in the Okinawa Trough | |
Li, TG; Liu, ZX; Hall, MA; Saito, Y; Berne, S; Cang, SX; Cheng, ZB | |
刊名 | CHINESE SCIENCE BULLETIN |
2002-04-01 | |
卷号 | 47期号:7页码:599-603 |
关键词 | Planktonic Foraminiferal Delta C-13 Minimum Event Okinawa Trough Last Deglaciation |
ISSN号 | 1001-6538 |
文献子类 | Article |
英文摘要 | The equatorial Pacific upwelling zone has been suspected of playing an important role in the global atmospheric CO2 changes associated with glacial-interglacial cycles. In order to assess the influencing scope of the surface water deglacial delta(13)C minimum in the tropical low-latitude Pacific, the core DGKS9603, collected from the middle Okinawa Trough, was examined for 4513 C records of planktonic foraminifera N. dutertrei and G. ruber. The planktonic foraminiferal delta(13)C records show a clear decreasing event from 20 to 6 cal. kaBP., which is characterized by long duration of about 14 ka and amplitude shift of 0.4 x 10(-3). Its minimum value occurred at 15.7 cal kaBP. The event shows fairly synchrony with the surface water deglacial delta(13)C minimum identified in the tropical Pacific and its marginal seas. Because there is no evidence in planktonic foraminiferal fauna and 45180 records for upwelling and river runoff enhancement, the broad deglacial delta(13)C minimum event in planktonic foraminiferal records revealed in core DGKS9603 might have been the direct influencing result of the deglacial surface water of the tropical Pacific. The identification for the event in the Okinawa Trough provides new evidence that the water evolution in the tropical low-latitude Pacific plays a key role in large regional, even global carbon cycle.; The equatorial Pacific upwelling zone has been suspected of playing an important role in the global atmospheric CO2 changes associated with glacial-interglacial cycles. In order to assess the influencing scope of the surface water deglacial delta(13)C minimum in the tropical low-latitude Pacific, the core DGKS9603, collected from the middle Okinawa Trough, was examined for 4513 C records of planktonic foraminifera N. dutertrei and G. ruber. The planktonic foraminiferal delta(13)C records show a clear decreasing event from 20 to 6 cal. kaBP., which is characterized by long duration of about 14 ka and amplitude shift of 0.4 x 10(-3). Its minimum value occurred at 15.7 cal kaBP. The event shows fairly synchrony with the surface water deglacial delta(13)C minimum identified in the tropical Pacific and its marginal seas. Because there is no evidence in planktonic foraminiferal fauna and 45180 records for upwelling and river runoff enhancement, the broad deglacial delta(13)C minimum event in planktonic foraminiferal records revealed in core DGKS9603 might have been the direct influencing result of the deglacial surface water of the tropical Pacific. The identification for the event in the Okinawa Trough provides new evidence that the water evolution in the tropical low-latitude Pacific plays a key role in large regional, even global carbon cycle. |
学科主题 | Multidisciplinary Sciences |
语种 | 英语 |
WOS记录号 | WOS:000175219200018 |
公开日期 | 2010-12-22 |
内容类型 | 期刊论文 |
源URL | [http://ir.qdio.ac.cn/handle/337002/3803] |
专题 | 海洋研究所_海洋地质与环境重点实验室 |
作者单位 | 1.Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Peoples R China 2.State Ocean Adm, Inst Oceanog 1, Qingdao 266003, Peoples R China 3.Univ Cambridge, Godwin Inst Quaternary Res, Cambridge CB2 3RS, England 4.IFREMER, French Oceanog Inst, F-29280 Plouzane, France |
推荐引用方式 GB/T 7714 | Li, TG,Liu, ZX,Hall, MA,et al. A broad deglacial delta C-13 minimum event in planktonic foraminiferal records in the Okinawa Trough[J]. CHINESE SCIENCE BULLETIN,2002,47(7):599-603. |
APA | Li, TG.,Liu, ZX.,Hall, MA.,Saito, Y.,Berne, S.,...&Cheng, ZB.(2002).A broad deglacial delta C-13 minimum event in planktonic foraminiferal records in the Okinawa Trough.CHINESE SCIENCE BULLETIN,47(7),599-603. |
MLA | Li, TG,et al."A broad deglacial delta C-13 minimum event in planktonic foraminiferal records in the Okinawa Trough".CHINESE SCIENCE BULLETIN 47.7(2002):599-603. |
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