Dispersivity and distribution coefficients in marine sediments using3Hand226Ra

Distribution of actinomycetes in near-shore tropical marine sediments.

Actinomycetes were isolated from near-shore marine sediments collected at 15 island locations throughout the Bahamas. A total of 289 actinomycete colonies were observed, and all but 6 could be assigned to the suprageneric groups actinoplanetes and streptomycetes. A bimodal distribution in the actinomycete population in relation to depth was recorded, with the maximum numbers occurring in the sh...

Marine Sediments and Climate History

Discrete Scattering in Marine Sediments

Testing various models and mechanisms of high frequency seabed scattering was one of primary goals of recent major experiments in sediment acoustics, SAX99 and SAX04, conducted near Ft. Walton Beach, Florida [1-4]. The models to test were based on various assumptions about dominance of certain scattering mechanisms and corresponding theories of scattering. Such models, confirmed by experiments,...

Erosion Mechanisms in Marine Sediments

Erosion of intertidal sediments may be influenced by several factors. In this study, the influence on sediment erosion of some physical mechanisms such as the sediment bed roughness, suspended particles and surface waves was investigated. Because of the complexity of the phenomena involved, careful experiments have been planed in order to make each mechanism dominant and to assess its contribut...

Charcoal analysis in marine sediments

ecosystems. Rapp. P-V. Reun. Cons. Int. Explor. Mer 173: 6065. PRAIRIE, Y. T., R. H. PETERS, AND D. E BIRD. 1995. Natural variability and the estimation of empirical relationships: A re-assessment of regression methods. Can. J. Fish. Aquat. Sci. 52: 788-798. PRICE, D. DE SOLLA. 1967. Science since Babylon. Yale. RICHTER, C. E 1958. Elementary seismology. Freeman. RODRIGUEZ, J., E JIMI~NEZ, B. B...