High resolution environmental variability during the last glaciation using results from lake sediment core and marine sediment core.

利用湖泊沉积物岩心和海洋沉积物岩心的结果，研究末次冰期期间的高分辨率环境变化。

• 批准号: 19310012
• 负责人: NARITA Hisashi
• 金额: $ 13.31万
• 依托单位: Tokai University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2007
• 资助国家: 日本
• 起止时间: 2007 至 2009
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-19310012/
• 关键词: 気候変動; 湖底堆積物; 温暖化; 縄文海進; 海水準変動; 生物生産; C-14年代

The annually laminated sediment cores were collected from the bottom of a coastal brackish lake, Lake Ogawara, Japan. The 20-m cores represent a continuous archive of palaeoenviromental information covering approximately the last 16,000 years. The inflow of seawater into Lake Ogawara since the last glaciation started from at least 10,000yr BP. The lake was filled with warm seawater around about 6,000yr BP, which is called the Jomon Transgression of Japan, corresponding to the global sea-level rise. Although the lake water changed to fresh after 6,000yr BP, the lake became brackish from 100~200yr BP until the present. The warm seawater, which filled Lake Ogawara around 6,000y BP, originated with the Tsushima Warm Current, the northward migration of this current increased the formation of intermediate water in the western North Pacific, comparison with the results of the marine sediment core collected off Shimikita in the western North Pacific.

从日本小川原湖（Lake Ogawara）的一个滨海半咸水湖底部采集了每年一次的层状沉积物柱样。20米的岩心代表了大约16,000年来古环境信息的连续档案。末次冰期以来流入小川原湖的海水至少从距今10,000年开始。大约在距今6,000年左右，这个湖泊被温暖的海水充满，这被称为日本的绳纹海侵，与全球海平面上升相对应。6, 000 yr BP后湖水由淡水变为淡水，100~ 200 yr BP后湖水由微咸水变为咸水。6, 000 yBP左右注入小川原湖的暖海水来源于对马暖流，对马暖流的北移促进了西北太平洋中层水的形成，并与西北太平洋Shimikita近海的海洋沉积物柱芯结果进行了比较。

项目成果

Latitudinal and Downcore (0–750 ka) Changes in Nalkane Chain Lengths in the Eastern Equatorial Pacific

• DOI: 10.1016/j.yqres.2010.01.001
• 发表时间: 2010-05
• 期刊: Quaternary Research
• 影响因子: 2.3
• 作者: K. Horikawa;M. Murayama;M. Minagawa;Y. Kato;T. Sagawa

陸と海がつながる自然の循環系

连接陆地和海洋的自然循环系统

• 发表时间: 2007
• 期刊: 日本海学の新世紀総集編, 角川学芸出版
• 作者: K. Kurisaki;K. Yoshimura;張勤
• 通讯作者: 張勤

GEOTRACES in Asia-1 from regional to international networks: The studies of marinebiogeochemical cycles of trace elements and isotopes.

从区域到国际网络的 Asia-1 GEOTRACES：微量元素和同位素的海洋生物地球化学循环研究。

• 发表时间: 2008
• 期刊: Journal ofoceanography 64
• 作者: Zhang;J.;Gamo;T.;Dai;M.;Chen;C.-T.A.;Sohrin;Y.(eds.)
• 通讯作者: Y.(eds.)

Grain Size, La/Yb and Th/Sc of settling Particles in the Western North Pacific: Evidence for Lateral Transport of Small Asian Loess.

西北太平洋沉降颗粒的粒度、La/Yb 和 Th/Sc：小型亚洲黄土横向迁移的证据。

• 发表时间: 2007
• 期刊: Journal of Oceanography 63
• 作者: Takata;H.;K. Kuma;Y. Isoda;S. Otosaka;T. Senjyu;M. Minakawa;Ai Sakamoto;Shigeyoshi Otosaka;南秀樹;白石絵美;H. Takata;児玉真史;Nobuhiro Maeda
• 通讯作者: Nobuhiro Maeda

Time variations of・5N of organic nitrogen in deep western subarctic Pacific sediment over the last 145 ka.

近145ka以来西亚北极太平洋深部沉积物有机氮·5N的时间变化

• 发表时间: 2008
• 期刊: Geochemistry Geophysics Geosystems 9
• 作者: Shigemitsu;M.;Watanabe;Y.W.;Narita;H.
• 通讯作者: H.