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Chinese Journal of Oceanology and Limnology 2014年第1期32卷 187-200页

作者：仇晓华李铁刚常凤鸣南青云熊志方孙晗杰 Key Laboratory of Marine Geology and Environment Institute of Oceanology Chinese Academy of Sciences University of Chinese Academy of Sciences

Changes in sea surface temperature （SST）, seawater oxygen isotope （δ18Osw）, and local salinity proxy （δ18Osw-ss ） in the past 155 ka were studied using a sediment core （MD06-3052） from the northern edge of the western Pacific Warm Pool （WPWP）, within the flow path of the bifurcation of the North Equatorial Current. Our records reveal a lead-lag relationship between paired Mg/Ca-SST and δ18O during Termination II and the last interglacial period. Similarity in SST between our site and the Antarctic temperature proxy and in CO2 profile showed a close connection between the WPWP and the Antarctic. Values of 818Osw exhibited very similar variations to those of mean ocean δ18Osw, owing to the past sea-level changes on glacial-interglacial timescale. Calculated values of δ18O reflect a more saline condition during high local summer insolation （SI） periods. Such correspondence between δ18O and local SI in the WPWP may reflect complex interaction between ENSO and monsoon, which was stimulated by changes in solar irradiance and their influence on the local hydrologic cycle. This then caused a striking reorganization of atmospheric circulation over the WPWP.

关键词： Mg/Ca sea surface temperature (SST) western Pacific Warm Pool (WPWP) ENSO monsoon

Response of the northwestern Pacific upper water δ^(13)C to the last deglacial ventilation of the deep Southern Ocean

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Chinese Science Bulletin 2011年第24期56卷 2628-2634页

作者： CHEN ShuangXi LI TieGang TANG Zheng QIU XiaoHua XIONG ZhiFang NAN QingYun XU ZhaoKai CHANG FengMing Key Laboratory of Marine Geology and Environment Institute of Oceanology Chinese Academy of Sciences Qingdao 266071 China Key Laboratory of Marine Hydrocarbon Resources and Environmental Geology Qingdao Institute of Marine Geology Ministry of Land and Resources of China Qingdao 266071 China Graduate University of Chinese Academy of Sciences Beijing 100049 China

The deglacial δ~13C minimum events that originated from the ventilation of the deep Southern Ocean around Antarctica, have been recorded in a range of marine sediments from the southern to tropical oceans in late Pleistocene. However, the broad δ~13C minimum event was also reported as far as to the northern middle latitudes, in northwestern Pacific marginal sea areas, during the last deglaciation. In the northwestern Pacific, forcing from the northern high latitudes is strongly expressed, while the records of in- fluence from the southern high latitudes are few. The Kuroshio Source Region (KSR) forms a boundary between the northwestern Pacific and the southern, tropical Pacific. So, high-resolution planktonic foraminiferal records in core MD06-3054 from the KSR are well positioned to identify signals from the southern hemisphere in the northwestern Pacific. Planktonic foraminiferal tests from the upper 1030 cm of the core were subject to AMS14C, carbon and oxygen isotopic measurements. A negative excursion was found to occur from about 20.0-6.0 ka BP in δ~13C records of both surface (Globigerinoides ruber) and subsurface (Pulleni- atina obliquiloculata) dwellers, but the overall trends of the two curves have reversed since 26.5 ka BP. Moreover, the δ~13C rec- ord of G. ruber (the surface dweller) shows a robust link to the record of atmospheric CO2, and its changes precede the records of P. obliquiloculata (the subsurface dweller). According to the hydrologic conditions, the broad δ~13C minimum event recorded in the KSR is also a response to the increasing ventilation of the deep Southern Ocean around Antarctica during the last deglaciation. The inconsistency between the records of the surface and subsurface dwellers was possibly caused by the ways that the low δ~13C signal was transmitted. Subsurface water primarily received the low δ~13C signal from the Antarctic Intermediate Water (AAIW), whereas the surface water was probably mainly impacted by atmospheric CO2 i

关键词：西北太平洋边缘水文条件南大洋通风信号传输方式末次冰消期高纬度地区中纬度地区

Calcareous nannofossil bioevents and microtektite stratigraphy in the Western Philippine Sea during the Quaternary

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Chinese Science Bulletin 2011年第25期56卷 2732-2738页

作者： SUN HanJie LI TieGang SUN RongTao YU XinKe CHANG FengMing TANG Zheng Key Laboratory of Marine Geology and Environment Institute of Oceanology Chinese Academy of Sciences Qingdao 266071 China Graduate University of the Chinese Academy of Sciences Beijing 100049 China School of Resource & Environment Engineering Shandong University of Technology Zibo 255049 China China Geological Survey Qingdao Institute of Marine Geology Qingdao 266007 China

Two sediment cores, MD06-3050 and MD06-3047, were analyzed to study the Quaternary calcareous nannofossil and microtektite records. We dated bioevents and the microtektite impact event by calibrating with oxygen isotope stratigraphy. Seven calcareous nannofossil bioevents were identified over the past 2.36 Ma including the last appearance of data for Discoaster brouweri, Calcidiscus macintyrei, large Gephyrocapsa and Pseudoemiliania lacunosa, the first appearance of data for large Gephyrocapsa and Emiliania huxleyi, and the abrupt increase in the abundance of Gephyrocapsa caribbeanica. In addition, we fortunately observed that Australasian microtektites were distributed in core MD06-3050 from 1340 to 1374 cm.

关键词：钙质超微化石同位素地层学第四纪菲律宾海西方沉积物岩心撞击事件

Paleoenvironmental Changes in the Northern Okinawa Trough since 25 ka BP:REE and Organic Carbon Evidence

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Journal of Earth Science 2012年第3期23卷 297-310页

作者：徐兆凯李铁刚南青云于心科李安春 Jinyong Choi Key Laboratory of Marine Geology and Environment Institute of OceanologyChinese Academy of Sciences Department of Oceanography Kunsan National UniversityKunsan 573-701Korea

Paleoenvironmental changes in the northern Okinawa trough covering the last 25 ka were synthetically reconstructed using REE and organic carbon indices of core *** of these parameters revealed three distinct intervals of major sediment provenance changes that can be related to sea-level fluctuation and Tsushima Warm Current *** 1（16-24.7 ka BP） is characterized by dominantly fluvial discharge from the Changjiang（Yangtze River） and Huanghe（Yellow River） as well as high primary *** Interval 2（7.3-16 ka BP）,the Changjiang and Huanghe mouths regressed with sea-level *** newly formed Tsushima Warm Current could carry some sediment loads of Taiwan to the study core,especially during its late phase（7.3-8.2 ka BP）.Modern oceanographic conditions were finally established since the beginning of Interval 3,leading to more terrigenous contribution from Taiwan,whereas low sea-surface productivity in the study area.

关键词： paleoenvironmental change the northern Okinawa trough Tsushima Warm Current,REE discriminant function.

Paleoproductivity evolution in the West Philippine Sea during the last 700 ka

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Chinese Journal of Oceanology and Limnology 2013年第2期31卷 435-444页

作者：唐正李铁刚常凤鸣南青云李青 Key Laboratory of Marine Geology and Environment Institute of OceanologyChinese Academy of Sciences Key Laboratory of Marine Hydrocarbon Resources and Environmental Geology Qingdao Institute of Marine GeologyMinistry of Land and Resources of China Graduate University of Chinese Academy of Sciences Shandong Provincial Analysis and Test Center

In order to reconstruct the paleoproductivity evolution history of the West Philippine Sea during the last 700 ka, the vertical gradient of Δδ13C in dissolved inorganic carbon Δδ13C between those of foraminifera Pulleniatina obliquiloculata and Cibicidoides wuellerstorfi） and planktonic foraminiferal assemblages were analysed in piston Core MD06-3047 retrieved from the Benham Rise （east of the Luzon Island）. Paleoproductivity evolution in the West Philippine Sea during the last 700 ka is closely related to glacial-interglacial cycles and precession-controlled insolation. Controlling factors ofpaleoproductivity could have been both thermocline fluctuations related with ENSO-Iike processes and eolian input associated with East Asian winter monsoon, and the former could have been the primary factor. A higher productivity and a shallower thermocline coeval with the occurrence of low CO2 concentrations in the EPICA Dome C ice core might indicate that biological export production in the low-latitude could act as a significant sink in the global carbon cycle, and modify atmospheric CO2 concentrations. Spectral analysis further reveals that the paleoproductivity is mainly controlled by thermocline fluctuations subjected to ENSO processes responding to processional variability of insolation. High coherences in eccentricity, obliquity and precession periods fiuther revealing the close link between thermocline fluctuations, paleoproductivity and atmospheric CO2 levels.

关键词： paleoproductivity thermocline depth paleo-ENSO west Philippine Sea

Redox conditions in sediments and during sedimentation in the Ontong Java Plateau,west equatorial Pacific

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Chinese Journal of Oceanology and Limnology 2011年第6期29卷 1309-1324页

作者：路波李铁刚于心科常凤鸣南青云 Key Laboratory of Marine Geology and Environment Institute of Oceanology Chinese Academy of Sciences Graduate University of Chinese Academy of Sciences National Marine Environmental Monitoring Center

Redox-sensitive elements in sediments, such as manganese （Mn）, vanadium （V）, molybdenum （Mo）, and uranium （U）, are promising indicators of past redox conditions during sedimentation and early diagenesis. However, in the Ontong Java Plateau, west equatorial Pacific, there are sparse datasets of redox-sensitive elements in sediment cores. Here, we present a 250 ka record of redox sensitive elements from a 460 cm gravity core at site WP7 （3~56＇S, 156^.E, water depth 1 800 m）, which was recovered from the southwest Ontong Java Plateau during the 1993 cruise of R/V Science I of the Institute of Oceanology, Chinese Academy of Sciences （IOCAS）. Relative to the Post-Archean Australian Shale （PAAS）, authigenic Mn, cobalt （Co）, nickel （Ni）, Mo, V, U, and cadmium （Cd） were found at constantly low levels except when peaks occurred at several depth intervals. Manganese, Co, Ni, and Mo concentrations were elevated at 25-35 cm due to Mn redox cycling. The core was divided into three distinct sections, the top 0-25 cm being oxic, a suboxic section at 25-35 cm and from 35-460 cm which was anoxic. Differential authigenic enrichments of Co, Ni, Mo, V, U, and Cd at the same depth intervals were observed indicating that the enrichments happened during sedimentation or diagenesis and suffered no post settlement redox changes. Therefore, no significant changes in redox conditions during sedimentation must have happened. The water at depth on the Ontong Java Plateau during past 250 ka must have been well oxygenated, possibly resulted from the more or less continuous presence of oxygen-rich deep water like the modem Antarctic Intermediate Water （AAIW） and Antarctic Circumpolar Water （ACW）; while it＇s slightly less oxygenated in glacial intervals, possibly due to ventilation weakening and/or the surface productivity increase.

关键词： west equatorial Pacific Ontong Java Plateau sediment redox-sensitive elements

西太平洋暖池北部15万年以来的碳同位素低值事件

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海洋科学 2014年第11期38卷 116-121页

作者：仇晓华李铁刚南青云宫海明中国科学院海洋研究所山东青岛266071 中国科学院海洋地质与环境重点实验室山东青岛266071 中国科学院研究生院北京100049 山东省第一地质矿产勘查院山东济南250014

对取自西太平洋暖池北部的MD06-3052孔的浮游有孔虫表层种Globigerinoides ruber进行了稳定氧碳同位素测试与分析,在所建立的年龄模式基础上,揭示了该孔150 ka以来氧碳同位素的变化特征及其碳同位素低值事件的时间。结果表明,150 ka以... 详细信息

对取自西太平洋暖池北部的MD06-3052孔的浮游有孔虫表层种Globigerinoides ruber进行了稳定氧碳同位素测试与分析,在所建立的年龄模式基础上,揭示了该孔150 ka以来氧碳同位素的变化特征及其碳同位素低值事件的时间。结果表明,150 ka以来碳同位素总体上显示出逐渐变重的趋势,其变化不同于氧同位素,并未表现出冰期-间冰期尺度的变化特征,且全新世和末次间冰期碳同位素差异较大。在所识别出的6次碳同位素的低值事件中,除倒数第二次冰消期与岁差低值有相位差以外,其余均与岁差低值都有很好的对应。幅度较大的3次发生于冷期/暖期的过渡期,其中末次冰消期的碳同位素记录受到浊流的侵蚀作用,有部分缺失;该孔与其他海区记录的相似性进一步证实了3次冰消期的δ13C低值事件的普遍性。

关键词：西太平洋暖池碳同位素低值事件岁差

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西菲律宾海15万年以来的浊流沉积及其成因

海洋地质与第四纪地质 2012年第4期32卷 157-163页

作者：仇晓华李铁刚常凤鸣徐兆凯宫海明杨再宝中国科学院海洋研究所海洋地质与环境重点实验室青岛266071 中国科学院研究生院北京100049

MD06-3052孔取自西菲律宾海吕宋岛岸外上陆坡,通过AMS14 C测年、沉积物粒度和浮游有孔虫氧同位素记录,揭示了15万年以来5个浊流沉积层的特征和浊积事件的发生时间。浊流沉积物粒度明显较上下层的粗,主要组分为砂质和粉砂质沉积。通过AMS... 详细信息

MD06-3052孔取自西菲律宾海吕宋岛岸外上陆坡,通过AMS14 C测年、沉积物粒度和浮游有孔虫氧同位素记录,揭示了15万年以来5个浊流沉积层的特征和浊积事件的发生时间。浊流沉积物粒度明显较上下层的粗,主要组分为砂质和粉砂质沉积。通过AMS14 C测年和氧同位素年代标尺,计算了5个浊流沉积层发生的时间分别为13.3、20.4、34.3、41.7和121.8kaBP,其中上部4次浊积事件发生于末次冰期,特别是MIS 3晚期和MIS 2期的低海平面时期,仅底部一次出现于末次间冰期MIS 5e中期相对低海平面时期,因而推测研究区浊流沉积事件的主要诱因是低海平面时期的海平面波动造成临近陆架上的沉积物不稳定,同时较陡的陆坡为浊流沉积提供了有利地形,因而造成了向陆坡方向的浊流搬运。

关键词：粒度浊流沉积氧同位素年代西菲律宾海

色谱分析条件对低纬度痕量长链烯酮温度指标应用可靠性的影响

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海洋地质与第四纪地质 2012年第4期32卷 91-96页

作者：南青云李铁刚陈金霞孙晗杰中国科学院海洋地质与环境重点实验室青岛266071 国家海洋局第一海洋研究所青岛266061

通过对气相色谱仪分析低纬陆架痕量长链烯酮过程中的升温速率和载气流速两个主要条件进行了探讨,对比了不同的程序升温速率和不同载气流量条件下烯酮的分离效果和检测精确度及重现性。研究发现色谱分析条件对低纬度痕量长链烯酮的分析... 详细信息

通过对气相色谱仪分析低纬陆架痕量长链烯酮过程中的升温速率和载气流速两个主要条件进行了探讨,对比了不同的程序升温速率和不同载气流量条件下烯酮的分离效果和检测精确度及重现性。研究发现色谱分析条件对低纬度痕量长链烯酮的分析有显著的影响。当前广泛适用于中低纬度开放大洋沉积物样品的较高的程序升温方法难以对低纬度高陆源物质冲淡作用影响下的陆架海沉积物样品进行有效的分离分析。在接近U3K7′指标适用温度上限且C37∶3烯酮含量极低的情况下(1ng/g干样,计算温度接近27℃),采用较低的程序升温速率分离C37∶3和C37∶2及后续化合物有利于获得良好的分离效果,且分析的精确度和重现性较之高的升温速率好。在对痕量且接近温度适用极限的烯酮样品进行分析时,应采用相对较小的载气流量以便获得理想的分离度和更加精确的分析结果。

关键词：长链烯酮痕量升温速率载气流量低纬度陆架海

西菲律宾海第四纪钙质超微化石及微玻陨石地层学

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科学通报 2011年第21期56卷 1749-1755页

作者：孙晗杰李铁刚孙荣涛于心科常凤鸣唐正中国科学院海洋研究所海洋地质与环境重点实验室青岛266071 中国科学院研究生院北京100049 山东理工大学资源与环境学院淄博255049 中国地质调查局青岛海洋地质研究所青岛266007

对西菲律宾海MD06-3047和MD06-3050两个柱状样第四纪沉积物进行了钙质超微化石和微玻陨石分析．经过鉴定统计，识别出自2．36Ma以来的7个钙质超微化石地层学事件，分别是Discoaster brouweri的末现、Calcidiscus macintyrei的末现、Larg... 详细信息

对西菲律宾海MD06-3047和MD06-3050两个柱状样第四纪沉积物进行了钙质超微化石和微玻陨石分析．经过鉴定统计，识别出自2．36Ma以来的7个钙质超微化石地层学事件，分别是Discoaster brouweri的末现、Calcidiscus macintyrei的末现、Large Gephyrocapsa的初现、Large Gephyrocapsa的末现、Pseudoemiliania lacunosa的末现、Gephyrocapsa caribbeanica的快速增长、以及Emiliania huxleyi的初现．同时，在MD06-3050柱状样岩芯1340～1374cm层位发现大量微玻陨石．通过氧同位素年代曲线对比，得出这些钙质超微化石生物学事件和微玻陨石事件的年龄．

关键词：西菲律宾海第四纪钙质超微化石地层学氧同位素地层学微玻陨石