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1末次冰消期以来东黄海暖流系统的演化显示文摘以黑潮为主干的东黄海暖流系统,所携带的高温高盐水对我国近海的海洋环境和大气环流格局产生了重大影响。为系统重建由黑潮暖流、对马暖流和黄海暖流组成的东黄海暖流系统在末次冰消期以来的演化过程,建立末次冰消期以来东黄海暖流系统的演化模式,对取自黑潮主流轴附近的DGKS9603孔、现代对马暖流边缘的CSH1孔和与黄海暖流相伴生的冷水体下面的泥质沉积区YSDP102孔的古海洋记录进行综合分析研究。结果表明,现代东黄海暖流系统是伴随着末次冰消期以来黑潮的演化和海平面的脉冲式上升而形成与演化的,地理边界条件是非常重要的控制因素。16kaB.P.黑潮对冲绳海槽的影响开始加强,之后随着海平面的上升,对马暖流开始发育,到8.5kaB.P.左右,现代对马暖流正式形成,期间黑潮暖流经历了Heinrich 1和Younger Dryas事件的两次减弱过程。7—6kaB.P.是黑潮暖流和对马暖流末次冰消期以来最强盛的时期;约6.4kaB.P.左右黄海暖流开始出现,至此东黄海暖流系统的基本格局已完全形成;在5.3—2.8kaB.P.期间,冲绳海槽发生了以“Pulleniatina低值事件”为标志的黑潮变弱过程,导致对马暖流主流轴在3kaB.P.左右发生了一次向太平洋方向的偏转事件,低温、高营养物质含量的陆架冷水团对冲绳海槽北部影响加强,期间在黄海暖流附近冷水体下面堆积了巨厚的泥质沉积体系。此后,由黑潮暖流、对马暖流和黄海暖流组成的东黄海暖流系统显著加强,直至达到现代的态势。李铁刚 江波 孙荣涛 张德玉 刘振夏 李青 2007第四纪研究2007,27,6:40
2末次冰期以来日本海陆源沉积的地球化学记录及其对海平面和气候变化的响应显示文摘通过对日本海Ulleung盆地KCES-1岩心中的主微量元素、稀土元素及粒度的综合分析,探讨了沉积物来源及其控制因素。结合地层年代模型,恢复了研究区48ka以来的古环境记录。结果显示,日本海Ulleung盆地沉积物以陆源碎屑为主,沉积物中主微量元素(Al、K、Fe、Mg、Na、Ti、Th、Sc、Rb、Sr、Cr、Co、Hf、Zr)含量普遍低于平均页岩。稀土元素丰度(ΣREE)为80~213μg/g,与长江、黄河及中国黄土接近,高于日本上地壳。球粒陨石标准化显示,沉积物中轻稀土显著富集,有显著的Eu负异常(0.6~0.8),Ce异常不显著。元素比值(La/Th、Th/Sc)及La/Th-Hf物源性质判别分析显示,研究区沉积物主要来源于上地壳,母岩落入长英质源岩区。在11~18ka,主微量元素的分布特征与11~0ka及48~18ka有显著差异。海平面和全球气候变化是控制主微量元素时空分布的重要因素。化学蚀变指数CIA(45~61)显示沉积物源区化学风化程度较弱,18ka以前风化程度低于18ka以后风化程度,暗示气候由干冷向暖湿转移。这与全球气候变化和东亚夏季风强度变化趋势一致。邹建军 石学法 刘焱光 刘季花 2010海洋地质与第四纪地质2010,30,2:13
3Formation and evolution of the modern warm current system in the East China Sea and the Yellow Sea since the last deglaciation显示文摘To reconstruct the formation and evolution process of the warm current system within the East China Sea (ECS) and the Yellow Sea (YS) since the last deglaciation, the paleoceangraphic records in core DGKS9603, core CSH1 and core YSDP102, which were retrieved from the mainstream of the Kuroshio Current (KC), the edge of the modern Tsushima Warm Current (TWC) and muddy region under cold waters accreted with the Yellow Sea Warm Current (YSWC) respectively, were synthetically analyzed. The results indicate that the formation and evolution of the modern warm current system in the ECS and the YS has been accompanied by the development of the KC and impulse rising of the sea level since the last deglaciation. The influence of the KC on the Okinawa Trough had enhanced since 16 cal kyr BP, and synchronously the modern TWC began to develop with the rising of sea level and finally formed at about 8.5 cal kyr BP. The KC had experienced two weakening process during the Heinrich event 1 and the Younger Drays event from 16 to 8.5 cal kyr BP. The period of 7-6 cal kyr BP was the strongest stage of the KC and the TWC since the last deglaciation. The YSWC has appeared at about 6.4 cal kyr BP. Thus, the warm current system of the ECS and the YS has ultimately formed. The weakness of the KC, indicated by the occurrence of Pulleniatina minimum event (PME) during the period from 5.3 to 2.8 cal kyr BP, caused the main stream of the TWC to shift eastward to the Pacific Ocean around about 3 cal kyr BP. The process resulted in the intruding of continent shelf cold water mass with rich nutrients. Synchronously, the strength of the YSWC was relatively weak and the related cold water body was active at the early-mid stage of its appearance against the PME background, which resulted in the quick formation of muddy deposit system in the southeastern YS. The strength of the warm current system in the ECS and the YS has enhanced evidently, and approached to the modern condition gradually since 3 cal kyr BP.李铁刚 南青云 江波 孙荣涛 张德玉 李青 2009Chinese Journal of Oceanology and Limnology2009,27,2:11
4Palaeoenvironmental changes from pollen record in deep sea core PC-1 from northern Okinawa Trough,East China Sea during the past 24 ka显示文摘A pollen record of core PC-1 from the northern Okinawa Trough,East China Sea(ECS),provides information on vegetation and climate changes since 24 cal.kaBP.A total of 103 samples were palynologically analyzed at 8 cm intervals with a time resolution of 230 a.Four pollen zones are recognized:zone I(812―715 cm,24.2―21.1 cal.kaBP),zone II(715―451 cm,21.1―15.2 cal.kaBP),zone III(451―251 cm,15.2―10.8 cal.kaBP),zone IV(251―0 cm,10.8―0.3 cal.kaBP),corresponding to Late MIS 3,Last Glacial Maximum(LGM),deglaciation and Holocene,respectively.The LGM is characterized by the dominance of herbs,mainly Artemisia,and high pollen influx,implying an open vegetation on the exposed continental shelf and a cool and dry climate.The deglaciation is a climate warming stage with Pinus percentage increased and Artemisia percentage decreased and a rapid sealevel rise.The Holo-cene is characterized by predominance of tree pollen with rapid increase in Castanea-Castanopsis in-dicating the development of mixed evergreen and deciduous broad-leaved forest and a warm,humid climate.Low pollen influx during the Holocene probably implies submergence of the continental shelf and retreat of the pollen source area.The vegetation indicated by pollen assemblage found in this upper zone is consistent with the present vegetation found in Kyushu,Japan.Originating from the humid mountain area of North Luzon of the Philippines,Tasmania and New Zealand,Phyllocladus with sporadic occurrence throughout PC-1 core probably suggests the influence of Palaeo-Kuroshio Current or intense summer monsoon.The observed changes in Pinus and Herbs percentage indicate fluctuations of the sea level,and high Pinus percentage corresponds to high sea level.Spectrum analysis of the pollen percentage record reveals many millennial-scale periodicities,such as periodicities of 6.8,3.8,2.2,1.6 ka.XU HongYan CHANG FengMing LUO YunLi SUN XiangJun 2009Chinese Science Bulletin2009,54,20:9
5全新世冲绳海槽北部表层海水温度和初级生产力对黑潮变迁的响应显示文摘在冲绳海槽北部B-3GC孔高分辨率地层年代框架的基础上,利用多种分子生物标志物和生源组分指标,重建了该地区全新世以来表层海水温度和生产力的变化历史。研究发现,UK3′7—表层海水温度和生产力的变化指示了全新世黑潮及对马暖流分支的变迁。10.6~7.3 ka BP期间,冲绳海槽北部主要受东海陆架冷水团影响,陆源物质输入量增加,初级生产力比较高,表层海水温度较低。7.3~4.6 ka BP期间,黑潮暖流对该区的影响迅速增强,表层海水快速增温,陆源物质输入减少,但是各种生产力指标显示出上升趋势,与该区上升流的出现和迅速发育有关。4.6~2.7 ka BP期间,即全新世普林虫低值事件(PME)期间,表层海水温度明显降低了0.8~1.4℃,陆源物质输入增加,初级生产力和各种生源组分的含量也达到较高水平,说明此时黑潮强度减弱,或者黑潮主流轴向太平洋方向发生偏移,该区再次受到陆架冲淡水的影响。2.7 ka BP以来,虽然黑潮暖流再次影响到该海区,但初级生产力和生源物质输出量继续大幅增高,可能与该地区上升流的持续发育有关。黄小慧 王汝建 翦知湣 王吉良 2009地球科学进展2009,24,6:8
648ka以来日本海Ulleung海盆南部的海洋沉积环境演化显示文摘晚第四纪以来伴随底层水含氧量的剧烈变化,浅色和深色沉积层的交替出现是日本海半远洋沉积物的主要特征。沉积特征分析表明,日本海Ulleung海盆南部KCES1孔的沉积物具有四种不同的沉积构造:均质、纹层、纹层状和混杂构造。深色沉积层一般具有纹层和纹层状构造,并且与我国内陆的千年尺度东亚夏季风强弱变化记录有很好的对应关系,表明纹层沉积物也具有千年尺度的变化规律,从而进一步说明了冰川性海平面变化和东亚夏季风波动应该是Ulleung海盆南部底层水溶解氧含量变化的主要原因。在暖期,在东亚夏季风降水相对增强的影响下,低温、低盐的东海沿岸水对日本海表层水体的贡献要大于对马暖流的贡献,日本海水体间的交换减弱,最终造成缺氧的海底沉积环境。在冷期,夏季风强度的减弱(冬季风增强)加快了日本海西北部深层水的生成,Ulleung海盆南部的底层水含氧量高,相应地沉积了具均质构造的浅色沉积物;在末次盛冰期最低海平面时,日本海成为一个封闭的海盆,降雨量高于蒸发量,水体出现分层,底层水处于停滞缺氧状态。自距今17.5 ka(日历年,下同)以来底层水含氧量较高,对马暖流逐渐成为影响日本海海洋沉积环境的主要因素。Ulleung海盆南部底层水的含氧量在YD期间有一定程度的降低,东海沿岸水的短暂强盛制约了深层水的流通。自距今10.5 ka以来对马暖流强盛,日本海海底处于富氧的沉积环境。刘焱光 石学法 SUK Bong-Chool 李朝新 王昆山 李小艳 2010海洋学报2010,32,1:6
788 ka 以来冲绳海槽北部古环境演化:来自元素地球化学的证据显示文摘对CSH1岩心全样沉积物样品进行元素地球化学分析,揭示了过去88ka冲绳海槽北部沉积物成分、水动力条件及陆源碎屑物质源区风化历史。冲绳海槽北部碎屑沉积物母岩主要以长英质为主,在MIS 1期沉积物存在大量火山源物质。过去88ka,沉积物源区风化程度较弱,但是自冰消期以来有逐渐增强的趋势。沉积物Zr/Nb比值表明在MIS 1期和MIS 5.1期水动力较为强烈,这与黑潮增强的时间一致,可能是指示黑潮强度的一个指标。冲绳海槽北部陆坡沉积物陆源碎屑贡献在低海平面时期显著增加,而在MIS 1和MIS 5.1期生源贡献显著增加。冲绳海槽北部沉积物成分变化明显受到黑潮和入海径流的调节,实际上受海平面和东亚季风的制约。朱爱美 石学法 邹建军 张辉 吴永华 刘焱光 刘焱光 2015海洋学报2015,37,6:5
8Depositional environment in the southern Ulleung Basin,East Sea(Sea of Japan),during the last 48000 years显示文摘The present study is based on the sedimentological data from a piston core KCES1 off the southern Ulleung Basin margin,the East Sea(Sea of Japan).The data include sediment color(L*),X-ray radiographs,grain size distribution and AMS14C date.Four kinds of sediments(homogeneous,laminated,crudely laminated and hybrid sediments) are identified according to the characters of the sedimentary structures that were considered to reflect changes in bottom-water oxygenation.Alternations of dark laminated/crudely laminated sediments and light homogeneous sediments represent millennial-scale variations that are possibly associated with the high-resolution changes in the East Asian monsoon(EAM).The relative contributions of the East China Sea Coastal Water(ECSCW) and the Tsushima Warm Current(TWC) were likely the main reasons for the repetition of the anoxic and oxic depositional conditions in the East Sea since the last 48 ka BP.During the interstadial,the strengthen summer EAM was attributed to the expansion of the ECSCW because of more humid climate in central Asia,and then more strongly low-salinity,nutrient-enriched water was introduced into the East Sea.The ventilation of deep water was restricted and therefore the dark laminated layer deposited under the anoxic bottom water condition.During the lowest stand of sea level in the last glacial maximum(LGM),the isolated East Sea dominated by stratified water masses and the euxinic depositional environment formed.The homogenous sediments have been predominating since 17.5 ka BP indicating that the TWC has intruded into the East Sea gradually with the stepwise rise of sea level and the bottom water oxygen level was high.During the late Younger Dryas(YD) period,the last dark laminated layer deposited because the ventilation of bottom water was restricted by stronger summer EAM.The TWC strengthened and the bottom water became oxic again from 10.5 ka BP.LIU Yanguang SHA Longbin SHI Xuefa SUK Bong-Chool LI Chaoxin WANG Kunshan LI Xiaoyan 2010Acta Oceanologica Sinica2010,29,5:4
9日本海末次冰期以来沉积作用和环境演化及其控制要素显示文摘基于对日本海南部、中部和西部3个沉积岩芯的综合研究,探讨了末次冰期以来日本海不同区域的沉积作用、环境演化特征及其控制因素。结果发现:在距今8ka以前,日本海南部、中部和西部陆源碎屑物质分别由河流物质、西风携带的风尘物质和海冰输运的物质组成;8ka以来日本海西部沉积物中存在连续分布的火山物质,推测与利曼寒流形成有关,标志着现代日本海表层环流格局的形成。在末次冰期,日本海中部和南部因为水体层化较强,导致底层水通风较弱,而日本海西部则由于盐析作用,通风较强。在冰消期早期,随着海平面上升,东海北部高盐水团再次入侵日本海,改善了日本海深层水体通风条件,但在日本海西部因受到常年海冰覆盖的影响,沉积物氧含量显著减小;在冰消期晚期和早全新世,日本海南部深层水体通风减弱,而在日本海中部和西部通风较好;但8ka以来日本海通风普遍增强。日本海的沉积作用和环境演化受海平面、东亚季风(西风环流)和对马暖流控制,但不同海域对上述3个因子的响应程度存在差异。海平面变化是控制日本海环境变化的首要因子,它直接制约着日本海与周围水体的交换程度;东亚夏季风影响日本海表层水体层化,而东亚冬季风则控制着日本海西部海冰的形成和深层水体垂向对流;8ka以来对马暖流成为控制日本海环境演化的重要因子,它的入侵增强了表层和底层水体交换,提高了日本海深层水体和沉积物溶解氧的更新速率。石学法 邹建军 姚政权 豆汝席 Gorbarenko Sergey 2019海洋地质与第四纪地质2019,39,3:4
10Paleoenvironmental Changes in the Northern Okinawa Trough since 25 ka BP:REE and Organic Carbon Evidence显示文摘Paleoenvironmental changes in the northern Okinawa trough covering the last 25 ka were synthetically reconstructed using REE and organic carbon indices of core CSH1.Variations of these parameters revealed three distinct intervals of major sediment provenance changes that can be related to sea-level fluctuation and Tsushima Warm Current evolution.Interval 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 productivity.In Interval 2(7.3-16 ka BP),the Changjiang and Huanghe mouths regressed with sea-level rising.The 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.徐兆凯 李铁刚 南青云 于心科 李安春 Jinyong Choi 2012Journal of Earth Science2012,23,3:3
11A quantitative reconstruction of the paleoenviornmental variations of the South Yellow Sea inner shelf based on benthic foraminiferal transfer functions显示文摘Transfer functions between the benthic foraminiferal fauna of seventy-one sediment surface-samples retrieved from the South Yellow Sea inner shelf and the environmental factors, including the summer bottom-water salinity(Ss), the summer bottom-water temperature(Ts) and the winter bottom-water temperature(Tw) have been developed utilizing weighted averaging partial least square regression(WA-PLS). Subsequently, the transfer functions have been applied to a late Holocene piston core SY01 from the South Yellow Sea inner shelf, established the variation curves of the Ss, Ts, and Tw during the last 3.9 cal. ka. The Ss and Ts showed a nearly synchronous trend to the published stalagmite δ18O curve from the Jiuxian Cave, meaning they could be used as reliable indicators for the summer monsoon. Similarly, the Tw could be used as an indicator for the winter monsoon for its synchronous change to the insensitive grain size variation of the core ZY-2 retrieved from the Central Yellow Sea mud area. These results suggest that transfer functions based on benthic foraminiferal fauna can be a potentially useful tool in palaeoceanographic and palaeoenvironmental research along the Chinese seaboard.SUN RongTao LI TieGang CHANG FengMing NAN QingYun LIU Xiao 2015Science China Earth Sciences2015,58,9:2
1288ka以来冲绳海槽北部物源及沉积通量演化显示文摘通过对CSH1岩心131个沉积物样品中的稀土元素进行分析,恢复了冲绳海槽北部88ka以来碎屑物质来源及古环境的演化历史。结果显示,88ka以来稀土元素含量发生了剧烈的波动,范围为111~171.3μg/g(均值为130.9μg/g),高值出现在MIS2期,低值主要出现在MIS1期。在MIS4期存在显著的Ce负异常,这与底层水体通风减弱相关。物源分析表明,8ka以来冲绳海槽北部沉积物存在火山碎屑的贡献,MIS2—MIS5a期以陆源碎屑为主。在MIS2期与MIS4期及末次冰消期早期和晚期沉积物来源存在显著的差异。海平面与东亚夏季风是控制冲绳海槽北部陆源碎屑物质累积的主要因子。朱爱美 石学法 邹建军 吴永华 张辉 白亚之 2015海洋地质与第四纪地质2015,35,5:2
13日本海西南陆坡全新世对马暖流演化的沉积学和地球化学记录显示文摘对日本海西南陆坡对马暖流主流轴下方高沉积速率沉积物柱状样,进行了沉积学和地球化学系统研究,以探讨全新世以来对马暖流在研究区的形成与演化,并得出了与附近地区古海洋学方法非常相近的结果,从而为今后研究区的对马暖流演化研究提供了沉积学和地球化学指标。据此,该柱状样中所记录的对马暖流演化可划分为5个主要阶段。全新世初期(9.6kaBP),对马暖流开始进入日本海,其强度较弱,同时,伴随着富营养东海沿岸水的影响,海底环境由还原性向氧化性转变;6.5kaBP时,对马暖流控制下的日本海南部现代对流模式最终建立起来,东海沿岸水的影响基本消失,随后,对马暖流明显减弱;3.0kaBP时,对马暖流再次增强并基本达到现在水平,且在随后的3ka里保持总体稳定,期间在2.0~0.7kaBP存在一次较弱的减弱过程。徐兆凯 崔镇勇 林东日 李铁刚 李安春 2010海洋地质与第四纪地质2010,30,1:1
14基于长链烯酮及其氢同位素重建过去1.42万年来东海海表温度和盐度高分辨率记录显示文摘东海古海洋环境条件(如海表温度(SST)和盐度(SSS))研究显示其与低纬热带大洋和东亚季风(EAM)的水文气候变化存在不同步的特征。然而末次冰消期以来,东海表层水温和表层盐度如何对东亚季风和低纬热带大洋的协同作用作出响应,目前尚不清楚。本文基于近1.4万年来东海的高分辨率岩芯中长链烯酮及其氢同位素(δDalkenone)的表层温盐记录,以了解不同时间尺度上的驱动机制。结果表明,东海表层水温、盐度具有不同时间尺度的变化,为约1 500 a的千年尺度以及约750、350和120 a的百年尺度的周期波动。在末次冰消期和全新世早期,由于黑潮增强将高温、高盐海水带入东海,导致表层水温度、盐度均较高。在全新世早中期(9.0~5.0 kaBP),由于东海水动力环流形成,并受高纬大气变化和低纬热带大洋环流的双重影响,从而引起显著的海洋层化现象,导致海表出现高而稳定的表层水温和相对较低的表层盐度。5.0~2.7 kaBP,东亚冬季风似乎有所增强,而东亚夏季风减弱,从而导致东海的上升流增强。这可能是由于黑潮势力减弱,随后导致东海的低SST和高SSS现象。全新世晚期,东海表层水温和表层盐度呈下降趋势,这与黑潮变化几乎同步。裴文龙 袁润 王益鹏 吴佳园 罗红仙 张瑞 李铁刚 王桂臣 张帆 2023海洋地质与第四纪地质2023,43,4:0
15日本海西南陆坡对马暖流影响下的全新世沉积物物源演化显示文摘对日本海西南陆坡对马暖流主流轴下方高沉积速率沉积物柱状样,进行了典型元素比值和物源判别函数方面的系统研究,以探讨全新世以来研究区沉积物的物质来源变化。结果表明,韩国的洛东江和中国的长江为所研究沉积物的主要来源。它们对研究区的物质贡献变化可划分为5个阶段,并主要受对马暖流演化和海平面上升的影响。全新世早期(9.6~6.5kaBP),特别是在两次冰融水事件MWP-1C(9.4~8.7kaBP)和MWP-1D(7.8~7.4kaBP)发生时,洛东江和长江对研究区沉积物组成的影响较大。随后,6.5~3.0和2.0~0.7kaBP,它们对研究区的影响减小,对应着此时东海北部及日本海西南部相对较弱的对马暖流强度。而在3.0~2.0和0.7kaBP以来,较强的对马暖流则将较多的洛东江和长江来源物质携带至研究区并沉降下来。徐兆凯 崔镇勇 林东日 李铁刚 李安春 2011海洋地质与第四纪地质2011,31,4:0
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