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 E-Mail IMAGE: Ocean-bottom sediments, shown after materials such as leaf wax chemicals have been extracted. These sediments -- collected in 1985 by the Ocean Drilling Program -- were processed recently at UB... view more  Credit: Douglas Levere / University at Buffalo BUFFALO, N.Y. -- Over hundreds of thousands of years, sediments from southern Greenland have been making their way into the ocean, where they're carried by underwater currents to a location in the Labrador Sea called the Eirik Drift. Here, they settle on the ocean floor, where they form a record of history, accumulati...

19). Decreasing cell concentrations after drilling has also been observed in other CORKs [Juan de Fuca ridge flank; ( 21)] and groundwater well systems ( 5)], low cell counts likely indicate that the North Pond system had recovered from drilling and that the 2017 fluids (and resulting data) are the best representation of microbial activity in the cold, oxic crustal subseafloor aquifer to date. Table 1 North Pond CORK fluids and bottom water values for cell enumeration, dissolved inorganic carbon (DIC), and dissolved organic carbon (DOC) from 2017 samples collected for this study. Additional g...

reconstructed from sub-ice shelf and offshore sediments J.A. Smith; C.-D. Hillenbrand; C. Subt; B.E. Rosenheim; T. Frederichs ... Abstract: Because ice shelves respond to climatic forcing over a range of time scales, from years to millennia, an understanding of their long-term history is critically needed for predicting their future evolution. We present the first detailed reconstruction of the Larsen C Ice Shelf (LCIS), eastern Antarctic Peninsula (AP), based on data from sediment cores recovered from below and in front of the ice shelf. Sedimentologic and chronologic information reveals tha...

 E-Mail IMAGE: Using Sandia National Laboratories' longstanding expertise in probabi­listic modeling and machine learning algorithms from the U.S. Naval Research Laboratory, the researchers determined the probabil­ity of finding methane hydrate off the... view more  Credit: Image courtesy of William Eymold/Sandia National Laboratories RALEIGH, N.C. -- Methane hydrate, an ice-like material made of compressed natural gas, burns when lit and can be found in some regions of the seafloor and in Arctic permafrost. Thought to be the world's largest source of natural gas, methane hydrate ...

© Justine Sauvage Marine sediment samples used in the irradiation experiments.A team of researchers from the University of Rhode Island's Graduate School of Oceanography and their collaborators have revealed that the abundant microbes living in ancient sediment below the seafloor are sustained primarily by chemicals created by the natural irradiation of water molecules. The team discovered that the creation of these chemicals is amplified significantly by minerals in marine sediment. In contrast to the conventional view that life in sediment is fueled by products of photosynthesis, an ecosys...