Accession Number : ADA605196


Title :   Transport of Gas and Solutes in Permeable Estuarine Sediments


Descriptive Note : Annual rept.


Corporate Author : FLORIDA STATE UNIV TALLAHASSEE DEPT OF OCEANOGRAPHY


Personal Author(s) : Huettel, Markus


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a605196.pdf


Report Date : 30 Sep 2013


Pagination or Media Count : 10


Abstract : The long-term goals of this research are to do the following: (1) to assess the role of small gas bubbles in shallow sandy coastal sediment for sediment geotechnical properties, the transport of solutes across the sediment-water interface and the biogeochemical processes in the sediment surface layer; and (2) to develop and apply an acoustic technique for the detection and quantification of small gas bubbles in sandy sediment at a high spatial resolution. The specific objectives of this research are to do the following: (1) Quantification of small gas bubbles in the surface layer of coastal sand sediment and assessment of their temporal and spatial distribution, (2) Quantification of the volumes and composition of the gas bubbles in the sediment and the overlying water and the changes of volume and composition over time, (3) Measure the dispersion and transport of solutes caused by bubble volume change and migration under different pressure conditions, and (4) Develop and apply an acoustic technique with high spatial and temporal resolution for the detection and quantification of embedded gas bubbles.


Descriptors :   *BUBBLES , *COASTAL REGIONS , *SEDIMENTS , ESTUARIES , GASES , HIGH RESOLUTION , MIGRATION


Subject Categories : Physical and Dynamic Oceanography
      Soil Mechanics


Distribution Statement : APPROVED FOR PUBLIC RELEASE