The Dynamics of Benthic Respiration at a Mid-Shelf Station Off Oregon
The Dynamics of Benthic Respiration at a Mid-Shelf Station Off Oregon
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俄勒冈州近海中架站的底栖呼吸动力学
DOI：
10.1007/s10498-016-9303-5
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发表时间：
2016
影响因子：
1.6
通讯作者：
Crowe, Sean A.
中科院分区：
文献类型：
--
作者：
Reimers, Clare E.;?zkan-Haller, H. Tuba;Sanders, Rhea D.;McCann-Grosvenor, Kristina;Chace, Peter J.;Crowe, Sean A.
俄勒冈海岸外的大陆架中部沉积物的特征是细砂，它能捕获植物碎屑并使其再矿化，从而消耗大量的溶解氧。沉积物耗氧量（SOC）可以从季节性有机质输入延迟，因为在静态物理过程期间，减少成分的短暂积累。在2009年至2013年期间，在一个80米的站点，使用无创涡流相关（EC）方法测量了五次底栖动物的氧交换率。辅助测量包括沉积物-水界面氧气的原位微剖面，孔隙水营养物质和微量金属的浓度剖面，以及岩心的固相有机C和硫化物矿物。沉积物岩心也被孵育以得到厌氧呼吸速率。EC测量是在春季、夏季和秋季条件下进行的，它们产生的平均底栖动物氧通量估计在−2和−15 mmol m−2d−1之间变化。EC氧通量与底部感应的显著波高（Hs）相关性最强。与hss的关系与深水涌浪高度的年度记录相结合，预测了上升流季节（5 - 9月）中部陆架的综合耗氧率为1.5 mol m−2,6.8 mol m−2y−1。年度预测要求，由于大浪下的沙子过滤和孔隙水平流，冬季SOC率会提高，这与假设有机物质从大陆架出口占主导地位的预算相反。精确的预算将需要对跨大陆架横断面进行多年的冬季通量测量和观测。
Mid-shelf sediments off the Oregon coast are characterized as fine sands that trap and remineralize phytodetritus leading to the consumption of significant quantities of dissolved oxygen. Sediment oxygen consumption (SOC) can be delayed from seasonal organic matter inputs because of a transient buildup of reduced constituents during periods of quiescent physical processes. Between 2009 and 2013, benthic oxygen exchange rates were measured using the noninvasive eddy covariance (EC) method five separate times at a single 80-m station. Ancillary measurements included in situ microprofiles of oxygen at the sediment–water interface, and concentration profiles of pore water nutrients and trace metals, and solid-phase organic C and sulfide minerals from cores. Sediment cores were also incubated to derive anaerobic respiration rates. The EC measurements were made during spring, summer, and fall conditions, and they produced average benthic oxygen flux estimates that varied between −2 and −15 mmol m−2d−1. The EC oxygen fluxes were most highly correlated with bottom-sensed, significant wave heights (Hs). The relationship withHswas used with an annual record of deepwater swell heights to predict an integrated oxygen consumption rate for the mid-shelf of 1.5 mol m−2for the upwelling season (May–September) and 6.8 mol m−2y−1. The annual prediction requires that SOC rates are enhanced in the winter because of sand filtering and pore water advection under large waves, and it counters budgets that assume a dominance of organic matter export from the shelf. Refined budgets will require winter flux measurements and observations from cross-shelf transects over multiple years.
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DOI：
10.1029/eo066i024p00490-06
发表时间：
1985-06
期刊：
Eos, Transactions American Geophysical Union
影响因子：
--
作者：
D. Basco
通讯作者：
D. Basco
波浪下的微电极速度效应和水生涡流协方差测量
DOI：
--
发表时间：
2016
期刊：
影响因子：
--
作者：
C. Reimers;H. Özkan‐Haller;A. Albright;P. Berg
通讯作者：
P. Berg
影响因子：
--
作者：
C. Reimers;H. Özkan‐Haller;P. Berg;A. Devol;Kristina McCann-Grosvenor;Rhea D. Sanders
通讯作者：
C. Reimers;H. Özkan‐Haller;P. Berg;A. Devol;Kristina McCann-Grosvenor;Rhea D. Sanders
底栖边界层和海底对俄勒冈内陆架氧气消耗的贡献的动力学
影响因子：
2.3
作者：
Kristina McCann;C. Reimers;Rhea D. Sanders
通讯作者：
Rhea D. Sanders
自然和人类对俄勒冈州乌姆普夸河边缘百年沉积物积累模式的影响
DOI：
--
发表时间：
2013
期刊：
影响因子：
--
作者：
R. Wheatcroft;M. Goñi;K.N.D. Richardson;Jeffry C. Borgeld
通讯作者：
Jeffry C. Borgeld