48ka以来日本海Ulleung海盆南部的海洋沉积环境演化

被引：8

作者：

刘焱光 ^{[1
]}

石学法 ^{[1
]}

SUK BongChool ^{[2
]}

李朝新 ^{[1
]}

王昆山 ^{[1
]}

李小艳 ^{[1
]}

机构：

[1] 国家海洋局第一海洋研究所海洋沉积与环境地质国家海洋局重点实验室

[2] 韩国海洋研究院南海研究所

来源：

海洋学报(中文版) | 2010年 / 32卷 / 01期

关键词：

日本海; 沉积环境; 东亚季风; 对马暖流;

D O I：

暂无

中图分类号：

Q178 [水生生物生态学和地理学];

学科分类号：

071004 ;

摘要：

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。

引用

页码：94 / 106

页数：13

共 19 条

[1]

Evolution and variation of the Tsushima warm current during the late Quaternary: Evidence from planktonic foraminifera, oxygen and carbon isotopes[J]. LI TieGang1, SUN RongTao1,2,3, ZHANG DeYu4, LIU ZhenXia4, LI Qing1,2 ＆ JIANG Bo1,2 1 Key Laboratory of Marine Geology and Environment, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China;2 Graduate School of Chinese Academy of Sciences, Beijing 100039, China;3 School of Resources ＆ Environment Engineering, Shandong Universi

[2]

Holocene tephra deposits in the northern Okinawa Trough[J]. OLE Bjφrslev Nielsen,JAN Heinemeier.Acta Oceanologica Sinica. 2006(01)

[3]

Alkenone temperature estimates for the East Sea during the last 190,000 years[J] . Kyung Eun Lee,Jang Jun Bahk,Jiyoung Choi.Organic Geochemistry . 2008 (6)

[4]

Age of the SKP-I and SKP-II tephras from the southern East Sea/Japan Sea: Implications for interstadial events recorded in sediment from marine isotope stages 3 and 4[J] . Jong-Hwa Chun,Daekyo Cheong,Ken Ikehara,Sang-Joon Han.Palaeogeography, Palaeoclimatology, Palaeoecology . 2007 (1)

[5]

Millennial-scale fluctuations in seasonal sea-ice and deep-water formation in the Japan Sea during the late Quaternary[J] . Ken Ikehara,Takuya Itaki.Palaeogeography, Palaeoclimatology, Palaeoecology . 2007 (1)

[6]

Japan Sea oxygen isotope stratigraphy and global sea-level changes for the last 50,000 years recorded in sediment cores from the Oki Ridge[J] . Yusuke Yokoyama,Yoshiki Kido,Ryuji Tada,Ikue Minami,Robert C Finkel,Hiroyuki Matsuzaki.Palaeogeography, Palaeoclimatology, Palaeoecology . 2007 (1)

[7]

Sediment fabrics, oxygenation history, and circulation modes of Japan Sea during the Late Quaternary[J] . Satoko Watanabe,Ryuji Tada,Ken Ikehara,Kazuho Fujine,Yoshiki Kido.Palaeogeography, Palaeoclimatology, Palaeoecology . 2007 (1)

[8]

Orbital-scale stratigraphy and high-resolution analysis of biogenic components and deep-water oxygenation conditions in the Japan Sea during the last 640 kyr[J] . Yoshiki Kido,Ikue Minami,Ryuji Tada,Kazuho Fujine,Tomohisa Irino,Ken Ikehara,Jong-Hwa Chun.Palaeogeography, Palaeoclimatology, Palaeoecology . 2007 (1)

[9]

Late Pleistocene dark laminated mud layers from the Korea Plateau, western East Sea/Japan Sea, and their paleoceanographic implications[J] . B.K. Khim,J.J. Bahk,S. Hyun,G.H. Lee.Palaeogeography, Palaeoclimatology, Palaeoecology . 2007 (1)

[10]

Diagenetic modification of magnetic properties observed in a piston core （MD01–2407） from the Oki Ridge, Japan Sea[J] . Akira Hayashida,So Hattori,Hirokuni Oda.Palaeogeography, Palaeoclimatology, Palaeoecology . 2007 (1)

← 1 2 →