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首页> 美国政府科技报告 >Quantitative Chemical Mass Transfer in Coastal Sediments During Early Diagenesis.
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Quantitative Chemical Mass Transfer in Coastal Sediments During Early Diagenesis.

机译：早期成岩作用中沿海沉积物的定量化学传质。

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LONG-TERM GOALS. The objectives of this study are: to measure rates and depths over which macroinvertebrates in selected functional groups transport sediment and create sedimentary structure; and, to derive quantitative mechanistic models for these property distributions. These observations and models will be integrated into mass-transport modeling of dissolved and particulate materials in marine sediments developed under this program. This work is a collaborative effort among Dr. Samuel Bentley (Louisiana State University), Dr. Carla Koretsky (Western Michigan University) and Dr. Yoko Furukawa (Naval Research Laboratory), originally started in 1997 under ONR322GG funding. We will focus on the synthesis of results during this phase. OBJECTIVES. The specific objectives are: 1. Sub-millimeter characterization of the dynamics of redox fluctuation in the immediate vicinity of burrows in laboratory mesocosms and field test sites. 2. Millimeter-scale characterization of the response of sedimentary microbial community to the redox dynamics. 3. Fabric characterization of sediment constituents (pores, minerals, microorganisms and organic matter) and their interactions. 4. Model development to bridge the static and dynamic biogeochemical and fabric data to the net chemical mass transfer. 5. Millimeter- to centimeter-scale characterization of sedimentary particle dynamics in laboratory mesocosms and field test sites. 6. Model development to mathematically describe the macrofaunally-induced particle dynamics.

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