Development of Ba-Si/N diagram in the ocean

海洋中 Ba-Si/N 图的发展

• 批准号: 15510010
• 负责人: KATO Yoshihisa
• 金额: $ 1.6万
• 依托单位: TOKAI UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2003
• 资助国家: 日本
• 起止时间: 2003 至 2005
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-15510010/
• 关键词: Barium; Ratio of Silicate to Nitrate; Chemical Composition of Seawater; Trace Element; Systematism of Distribution; Water Mass Analysis; Ocean Geochemical Cycle; Paleoceanographic Proxy; 古海洋プロキシー; ケイ素・窒素比; 生物生産

1. Horizontal distributions of barium (Ba) and silicate/nitrate ratio (Si/N) along the pathway of the deep-sea thermohaline circulation in the ocean were examined at the isopicnal horizon of sigma4=45.86. Comparing to the deep water in the northern North Atlantic, Ba concentration is ca.3.5 fold and the ratio of Si/N is ca.9 fold higher in the northern North Pacific.2. The relationship between the concentration of Ba and the ratio of Si/N was examined in the oceans which are the North Pacific (NP), Eastern Indian, Tasman Sea of the western South Pacific (TSM), East Equatorial Pacific (EEqP), Sub Antarctic Ocean (SAA) and Antarctic Ocean (AA), and also in the adjacent seas which are Okhotsk (OHT), Japan (JPN), South China (SC), Sulu (SL) and Andaman (ADM) Seas. In the basis on the analysis by the Ba-Si/N diagram, the linear relations between the two parameters were found in each basin. Those regression relations and correlation coefficients are as follows ;NP:Ba=2.1+32.4(Si/N) R^2=0.98 (1)EI:Ba=33.5+18.4(Si/N) R^2=0.97 (2)TSM:Ba=32.3+23.2(Si/N) R^2=0.97 (3)EEqP:Ba=15.6+32.4(Si/N) R^2=0.99 (4)SAA:Ba=52.1+12.8(Si/N) R^2=0.96 (5)AA:Ba=57.4+10.6(Si/N) R^2=0.92 (6)OHT:Ba=17.5+24.1(Si/N) R^2=0.97 (7)JPN:Ba=30.8+15.2(Si/N) R^2=0.85 (8)SC:Ba=3.5+28.3(Si/N) R^2=0.99 (9)SL:Ba=24.3+17.5(Si/N) R^2=0.98 (10)ADM:Ba=25.9+20.2(Si/N) R^2=0.99 (11)Consequently, the minimum slope of the relation was obtained in the Antarctic Ocean, oppositely the maximum in the North Pacific Ocean. These results demonstrate that the linear correlationship shown on the Ba-Si/N diagram in each oceanic basin is useful for reconstructing the past seawater composition, Ba vs Si/N, and serves as a pleoceanographic proxy

1.在σ 4 = 45.86的等深线层上，研究了钡（Ba）和硅酸盐/硝酸盐比值（Si/N）沿着深海温盐环流路径的水平分布。与北大西洋北方深水相比，北太平洋北方深水中Ba的浓度高约3.5倍，Si/N比高约9倍.本文研究了北太平洋、东印度洋、南太平洋西部的塔斯曼海、东赤道太平洋、亚南极洋和南极洋以及邻近的鄂霍次克海、日本海、华南海、苏禄海（SL）和安达曼海（ADM）。在Ba-Si/N图分析的基础上，发现在每个盆地中，这两个参数之间存在线性关系。回归关系式和相关系数为：NP：Ba = 2.1 + 32.4（Si/N）R^2 = 0.98（1）EI：Ba = 33.5 + 18.4（Si/N）R^2 = 0.97（2）TSM：Ba = 32.3 + 23.2（Si/N）R^2 = 0.97（3）EEqP：Ba = 15.6 + 32.4（Si/N）R^2 = 0.99（4）SAA：Ba = 52.1 + 12.8（Si/N）R^2 = 0.96（5）AA：Ba = 57.4 + 10.6（Si/N）R^2 = 0.92（6）OHT：Ba = 17.5 + 24.1（Si/N）R^2 = 0.97（7）日本：Ba = 30.8 + 15.2（Si/N）R^2 = 0.85（8）SC：Ba = 3.5 + 28.3（Si/N）R^2 = 0.99（9）SL：Ba = 24.3 + 17.5（Si/N）R^2 = 0.98（10）ADM：Ba = 25.9 + 20.2（Si/N）R^2 = 0.99（11）因此，该关系的斜率在南极洋最小，而在北太平洋最大。这些结果表明，各海盆的Ba-Si/N图上所显示的线性相关关系对重建过去的海水成分Ba/Si/N是有用的，并可作为多海洋学代用指标

项目成果

Development of Ba-Si/N diagram in the ocean.

海洋中 Ba-Si/N 图的发展。

• 发表时间: 2005
• 期刊: Kaiyo Monthly Extra 39
• 作者: Kato;Y.(include 4 authors)
• 通讯作者: Y.(include 4 authors)

Kato, Y.(他3名): "Correlation between Ba and Si/N in the oceans."Geochimica et Cosmochimica Acta(Special Supplement). 67. A205 (2003)

Kato, Y.（其他 3 人）：“海洋中 Ba 和 Si/N 之间的相关性”。Geochimica et Cosmochimica Acta（特别补充）67. A205 (2003)。

Chemical composition of marine suspended particles and benthic fluxes of elements through pore water.

海洋悬浮颗粒的化学成分和通过孔隙水的底栖元素通量。

• 发表时间: 2005
• 期刊: Kaiyo Monthly Extra 39
• 作者: Minami;H.(include 6 authors)
• 通讯作者: H.(include 6 authors)

加藤義久(他5名): "鉛210およびセシウム137から見た相模湾における沈降粒子の振る舞いと堆積フラックス"日本海水学会誌. 57. 103-112 (2003)

加藤佳久（和其他 5 人）：“从铅 210 和铯 137 的角度看相模湾沉积颗粒和沉积物通量的行为”日本海水学会杂志 57. 103-112 (2003)。

Kitazato, H.(他10名): "Long-term monitoring of the sedimentary process at the central part of Sagami Bay, Japan : Rationale, logistics and overview of results."Progress in Oceanography. 57. 3-16 (2003)

Kitazato, H.（和其他 10 人）：“日本相模湾中部沉积过程的长期监测：原理、逻辑和结果概述。”海洋学进展 57. 3-16 (2003)。