This paper discusses several rapid site characterization (RSC) technologies that can be used at marine sediment sites, including X-ray fluorescence (XRF) for metals, ultraviolet fluorescence (UVF) for polycyclic aromatic hydrocarbons, QwikSed bioassay for assessing toxicity, and other techniques. Examples are provided to illustrate the efficacy of applying RSC tools to different stages of the E...

Thaumarchaeota are abundant and active in marine waters, where they contribute to aerobic ammonia oxidation and light-independent carbon fixation. The ecological function of thaumarchaeota in marine sediments, however, has rarely been investigated, even though marine sediments constitute the majority of the Earth's surface. Thaumarchaeota in the upper layer of sediments may contribute significa...

Objective: The management of dredged sediments is a major challenge for many ports and harbours who need to maintain navigable access. Sediment volumes produced may be significant and expensive to manage. This paper presents financial modelling and analysis for the management of dredged marine sediment using a financial model developed which has the potential to be used as decision support tool...

− We can obtain the performance of the marine seismometer upon the sediment to know its coupling in the bottom sea. This paper deals with the coupling parameters in order to obtain the geophone response through the frequency. The use of the shake table and vibration calibrator allows to deduce the coupling transfer function between the geophone and the sediment sea without using a detailed mode...

Seven heavy metals, Co, Cr, Cu, Fe, Mn, Ni and Zn, were measured in marine sediments, plants and invertebrates in the vicinity of a ferro-nickel smelting plant in Greece. The concentrations of metals in the sediment were higher than those found in the average unpolluted Greek coastal sediment. High levels of metals were observed in the gastropod molluscs, particularly Cerithium vulgatum, which ...

Lake Sapanca, which is located on the Sakarya-Sapanca-İzmit corridor in NW Turkey, is a freshwater lake with numerous fish farms in its catchment. Palynological analyses including non-pollen palynomorphs of a short (38.5 cm) and a longer sediment core (586 cm), taken in the centre of the lake and dated in previous investigations, revealed the presence of brackish and marine palynomorphs. The lo...

—Absolute chronology of marine sediment beyond the C age range provides a test for models of climate change and has many other applications. U-Th techniques have been used for such chronology by dating corals, but extending these techniques to marine sediment is complicated by the presence of significant initial Th—both in detrital material and scavenged from seawater. In this study, we investi...

A major fraction of the petroleum hydrocarbons discharged during the 2010 Macondo oil spill became associated with and sank to the seafloor as marine snow flocs. This sedimentation pulse induced the development of distinct bacterial communities. Between May 2010 and July 2011, full-length 16S rRNA gene clone libraries demonstrated bacterial community succession in oil-polluted sediment samples ...

Sediment-laden meltwater plumes are a common occurrence at the margins of marine-terminating glaciers in Svalbard and useful proxies for inferring glacial hydrological system runoff. Plumes can influence calving rates, marine biogeochemistry fjord circulation. However, little is known about how their dynamics will evolve warmer, wetter Arctic with increasing melt rates retreating glacier margin...

Purpose The aim of this study was to assess phosphorusretention (Pret) capacities via P adsorption (Pads) and desorption (Pdes) by sediments collected from six different sources associated with various origins, physical, and chemical characteristics. Materials and methods Sediment samples were collected in the State of Florida, the USA, from estuary, marine, wetland, canal, river, and lake, res...