Radiocarbon Studies of Dissolved and Particulate Organic Carbon in the Eastern North Pacific and Amazon Plume Regions

北太平洋东部和亚马逊羽流区域溶解和颗粒有机碳的放射性碳研究

基本信息

  • 批准号:
    9101540
  • 负责人:
  • 金额:
    $ 23.93万
  • 依托单位:
  • 依托单位国家:
    美国
  • 项目类别:
    Continuing Grant
  • 财政年份:
    1991
  • 资助国家:
    美国
  • 起止时间:
    1991-05-15 至 1995-04-30
  • 项目状态:
    已结题

项目摘要

The organic carbon cycle will be studied at two open ocean sites which reflect potential differences in carbon derived from marine and terrestrial sources. Studies of carbon isotopes and dissolved and particulate organic carbon will be conducted at Station "M" in the Northeast Pacific Ocean and in the Amazon River plume region of the Atlantic Ocean. The control of DOC concentrations and . 14C values by natural microbial assemblages will also be evaluated. Relationships between the different carbon pools, including sedimentary organic carbon (SOC), will be assessed at Station "M" during periods of high and low primary productivity and in a transect of Amazon River plume/Atlantic Ocean waters. The following questions will be addressed: (1) Are carbon species and . 14C gradients a function of seasonal carbon flux rates in the open ocean? (2) What is the contribution of terrestrially derived carbon species to the open ocean? (3) Are isotopes activities fractionated with respect to particle size and/or organic composition? (4) What fraction of the total DOC pool is potentially labile and truly refractory, and what are the . 14C signatures of each fraction?
有机碳循环将在两个开阔的海洋地点进行研究,这反映了来自海洋和陆地来源的碳的潜在差异。碳同位素、溶解有机碳和颗粒有机碳的研究将在东北太平洋的“M”站和大西洋的亚马逊河羽流区域进行。DOC浓度的控制和。还将评估天然微生物组合的14C值。不同碳库之间的关系,包括沉积有机碳(SOC),将在“M”站的高和低初级生产力时期以及亚马逊河羽流/大西洋水域的样带中进行评估。以下问题将被解决:(1)碳的种类和。14C梯度是开放海洋中季节性碳通量率的函数?(2)陆源碳物种对开放海洋的贡献是什么?(3)同位素活度是否根据颗粒大小和/或有机组成进行分馏?(4)总DOC池中潜在不稳定和真正难熔的比例是多少?每个分数的14C签名?

项目成果

期刊论文数量(0)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)

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James Bauer其他文献

A deeper look at the colors of the saturnian irregular satellites
  • DOI:
    10.1016/j.icarus.2007.04.020
  • 发表时间:
    2007-11-01
  • 期刊:
  • 影响因子:
  • 作者:
    Tommy Grav;James Bauer
  • 通讯作者:
    James Bauer
Hyperactivity of Ventral Hippocampal Mossy Cells Degrades Dorsal Hippocampal Mnemonic Function via Longitudinal Projections
  • DOI:
    10.1016/j.biopsych.2021.02.532
  • 发表时间:
    2021-05-01
  • 期刊:
  • 影响因子:
  • 作者:
    James Bauer;Sarah Rader;Max Joffe;Wooseok Kwon;Juliana Quay;Chengwen Zhou;P. Jeffrey Conn;Alan Lewis
  • 通讯作者:
    Alan Lewis

James Bauer的其他文献

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{{ truncateString('James Bauer', 18)}}的其他基金

Collaborative Research: Constraining the sources, ages and alteration of dissolved and particulate lipids in estuarine and coastal organic matter
合作研究:限制河口和沿海有机质中溶解和颗粒脂质的来源、年龄和变化
  • 批准号:
    0961860
  • 财政年份:
    2010
  • 资助金额:
    $ 23.93万
  • 项目类别:
    Standard Grant
Collaborative Research: Assessing the Variability and Modification of Age, Character and Reactivity of Organic Carbon Delivered by Rivers and Estuaries to an Ocean Margin
合作研究:评估河流和河口输送到海洋边缘的有机碳的年龄、特征和反应性的变化和变化
  • 批准号:
    0403949
  • 财政年份:
    2004
  • 资助金额:
    $ 23.93万
  • 项目类别:
    Standard Grant
COLLABORATIVE RESEARCH: IMPACT OF DOM SOURCE AND PHOTOOXIDATION ON CARBON CYCLING IN ESTUARIES
合作研究:DOM 源和光氧化对河口碳循环的影响
  • 批准号:
    0327423
  • 财政年份:
    2004
  • 资助金额:
    $ 23.93万
  • 项目类别:
    Standard Grant
Collaborative Research: Delivery and Fate of Old Terrestrial Organic Carbon in a Riverine Ecosystem
合作研究:河流生态系统中古老陆地有机碳的传递和归宿
  • 批准号:
    0234533
  • 财政年份:
    2003
  • 资助金额:
    $ 23.93万
  • 项目类别:
    Continuing Grant
Collaborative Research: Penetration of the Bomb C-14 Transient in the Dissolved and Particulate Organic Carbon Pools in the Two Mid-Ocean Gyres
合作研究:C-14 炸弹瞬态对两个大洋中环流溶解和颗粒有机碳库的穿透
  • 批准号:
    9810669
  • 财政年份:
    1998
  • 资助金额:
    $ 23.93万
  • 项目类别:
    Continuing Grant
SGER: Carbon Isotopes in Particulate and Dissolved Organic Carbon in the NE Pacific during the ENSO Event of 1997-98
SGER:1997-98 年 ENSO 事件期间东北太平洋颗粒物和溶解有机碳中的碳同位素
  • 批准号:
    9808538
  • 财政年份:
    1998
  • 资助金额:
    $ 23.93万
  • 项目类别:
    Standard Grant
Radiocarbon Studies of Dissolved and Particulate Organic Carbon Cycling in the North Pacific and Antarctic Oceans
北太平洋和南极海洋溶解和颗粒有机碳循环的放射性碳研究
  • 批准号:
    9501531
  • 财政年份:
    1994
  • 资助金额:
    $ 23.93万
  • 项目类别:
    Continuing Grant

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Dissolved Organic Carbon and Nitrogen Analysis for Coastal and Aquatic Studies.
用于沿海和水生研究的溶解有机碳和氮分析。
  • 批准号:
    RTI-2023-00593
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  • 批准号:
    461146-2013
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    $ 23.93万
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Field studies in dissolved gases and total dissolved gas pressure in groundwater
地下水溶解气体和总溶解气体压力的现场研究
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Parametric Studies of Dissolved Gases and Marine Biomarkers by Underwater MIMS
通过水下 MIMS 对溶解气体和海洋生物标志物进行参数研究
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Collaborative research: Hydrogen isotopic studies of marine dissolved and particulate organic matter
合作研究:海洋溶解和颗粒有机物的氢同位素研究
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  • 财政年份:
    2006
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    $ 23.93万
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