How O2 depletion affects to chemical-biologigal interactions at sediment surface?

氧气消耗如何影响沉积物表面的化学-生物相互作用？

• 批准号: 23510022
• 负责人: OGURI Kazumasa
• 金额: $ 3.16万
• 依托单位: Japan Agency for Marine-Earth Science and Technology
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2011
• 资助国家: 日本
• 起止时间: 2011 至 2013
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-23510022/
• 关键词: 堆積物－水境界; 酸素濃度; 酸素フラックス; 酸素極小域; 海洋無酸素化; 酸素極小層; 八戸沖

High precision O2 controller was developed to measure diffusive O2 uptake on board. O2 profiles at sediment surface taken from off Hachinohe (water depth of 500m, 112uM in bottom watear), 1000m (36uM) and 2000m (70uM) were measured with the O2 controller and O2 microelectrodes. O2 uptake in each core was calculated applying diffusion model, and the rates were 2.7-4.2, 0.6-0.7 and 1.4-1.6mm m-2 d-1, respectively. Carbon dioxide production rates were estimated to 2.1-3.1, 0.5 and 1.1-1.2 mmolC m-2 d-1, respectively to apply Redfield ratio.

开发了高精度氧气控制器，用于测量船上扩散的氧气摄取量。用氧气控制器和氧气微电极测量了哈奇诺河外(底水水深500m，112um)、1000m(36um)和2000m(70um)沉积物表面的O2分布。应用扩散模型计算出各岩芯的吸氧速率分别为2.7-4.2、0.6-0.7和1.4-1.6 mm m-2d-1。应用Redfield比估算的二氧化碳产生速率分别为2.1-3.1、0.5和1.1-1.2mmolCm-2d-1。

项目成果

Deep-sea limestone block as source of 14C-depleted dissolved inorganic carbon at the Palau Trench

深海石灰石块是帕劳海沟贫 14C 溶解无机碳的来源

• 发表时间: 2014
• 期刊: Chemical Geology
• 影响因子: 3.9
• 作者: Tsuboi;T.;Wada;H.;Nakamura;T.;Hang;T.T;Matsuzaki;H.;Otsuji;N.;Fujioka;K.;Oguri;K.;Kitazato;H.
• 通讯作者: H.

Genetic diversity and environmental preferences of monithalamous foraminifers revealed through clone analysis of environmental small-subunit ribosomal DNA sequences

通过环境小亚基核糖体 DNA 序列的克隆分析揭示环丘有孔虫的遗传多样性和环境偏好

• 发表时间: 2013
• 期刊: Journal of Foraminiferal Research
• 影响因子: 1.1
• 作者: Tsuchiya;M.;Gooday;A.J.;Nomaki;H.;Oguri;K.;Kitazato;H.
• 通讯作者: H.

Recent sediment dynamics in hadal trenches: evidence for the influence of higher frequency (tidal, near-inertial) fluid dynamics

• DOI: 10.1016/j.dsr.2014.05.005
• 发表时间: 2014-08
• 作者: Robert Turnewitsch;Saeed Falahat;Jiřina Stehlíková;K. Oguri;R. Glud;M. Middelboe;H. Kitazato;F. Wenzhöf

観測装置

观测设备

• 发表时间: 2013

堆積物-水境界における現場測定技術の最前線

最前沿的沉积物-水界面原位测量技术

• 发表时间: 2013
• 期刊: 地球化学
• 作者: 白熊理沙;林宏恵;久留主泰朗;野坂裕一・鈴木光次・伊佐田智規・齊藤宏明・津田敦・服部寛・山下洋・高橋一生;田中義幸;小栗一将
• 通讯作者: 小栗一将